SUSE Linux Enterprise Server 15 Security Technical Implementation Guide
- Version/Release: V1R12
- Published: 2023-12-01
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- RMF Control
- SI-2
- Severity
- High
- CCI
- CCI-001230
- Version
- SLES-15-010000
- Vuln IDs
-
- V-234800
- Rule IDs
-
- SV-234800r622137_rule
Checks: C-37988r618669_chk
Verify the SUSE operating system is a vendor-supported release. Use the following command to verify the SUSE operating system is a vendor-supported release: > cat /etc/os-release NAME="SLES" VERSION="15" Or any SUSE Linux Enterprise 15 Service Pack follow up release. NAME="SLES" VERSION="15-SPx" Current End of Life for SLES 15 General Support is 31 Jul 2028 and Long-term Support is until 31 Jul 2031. If the release is not supported by the vendor, this is a finding.
Fix: F-37951r618670_fix
Upgrade the SUSE operating system to a version supported by the vendor. If the system is not registered with the SUSE Customer Center, register the system against the correct subscription. If the system requires Long-Term Service Pack Support (LTSS), obtain the correct LTSS subscription for the system.
- RMF Control
- SI-2
- Severity
- Medium
- CCI
- CCI-001233
- Version
- SLES-15-010001
- Vuln IDs
-
- V-234801
- Rule IDs
-
- SV-234801r942857_rule
Checks: C-37989r942855_chk
Check that the following package has been installed: # rpm -qa | grep -i mcafeetp If the "mcafeetp" package is not installed, this is a finding. Verify that the daemon is running: # ps -ef | grep -i mfetpd If the daemon is not running, this is a finding.
Fix: F-37952r942856_fix
Install and enable the latest Trellix ENSLTP package.
- RMF Control
- SI-2
- Severity
- Medium
- CCI
- CCI-001227
- Version
- SLES-15-010010
- Vuln IDs
-
- V-234802
- Rule IDs
-
- SV-234802r622137_rule
Checks: C-37990r618675_chk
Verify the SUSE operating system security patches and updates are installed and up to date. Note: Updates are required to be applied with a frequency determined by the site or Program Management Office (PMO). Check for required SUSE operating system patches and updates with the following command: > sudo zypper patch-check 0 patches needed (0 security patches) If the patch repository data is corrupt, check that the available package security updates have been installed on the system with the following command: > cut -d "|" -f 1-4 -s --output-delimiter " | " /var/log/zypp/history | grep -v " radd " 2016-12-14 11:59:36 | install | libapparmor1-32bit | 2.8.0-2.4.1 2016-12-14 11:59:36 | install | pam_apparmor | 2.8.0-2.4.1 2016-12-14 11:59:36 | install | pam_apparmor-32bit | 2.8.0-2.4.1 If the SUSE operating system has not been patched within the site or PMO frequency, this is a finding.
Fix: F-37953r618676_fix
Install the applicable SUSE operating system patches available from SUSE by running the following command: > sudo zypper patch
- RMF Control
- AC-8
- Severity
- Medium
- CCI
- CCI-000048
- Version
- SLES-15-010020
- Vuln IDs
-
- V-234803
- Rule IDs
-
- SV-234803r622137_rule
Checks: C-37991r618678_chk
Verify the SUSE operating system displays the Standard Mandatory DoD Notice and Consent Banner before granting access to the system via local console. Check the "motd" (message of the day) file to verify that it contains the DoD required banner text: > more /etc/motd The output must display the following DoD-required banner text: "You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. -At any time, the USG may inspect and seize data stored on this IS. -Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose. -This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy. -Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details." If the output does not display the correct banner text, this is a finding.
Fix: F-37954r618679_fix
Configure the SUSE operating system to display the Standard Mandatory DoD Notice and Consent Banner before granting access to the system via local console by performing the following tasks: Edit the "motd" file and replace the default text inside with the Standard Mandatory DoD banner text: "You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. -At any time, the USG may inspect and seize data stored on this IS. -Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose. -This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy. -Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details."
- RMF Control
- IA-5
- Severity
- High
- CCI
- CCI-000197
- Version
- SLES-15-010030
- Vuln IDs
-
- V-234804
- Rule IDs
-
- SV-234804r877396_rule
Checks: C-37992r618681_chk
Verify the vsftpd package is not installed on the SUSE operating system. Check that the vsftpd package is not installed on the SUSE operating system by running the following command: > zypper info vsftpd | grep Installed If "vsftpd" is installed and is not documented with the Information System Security Officer (ISSO) as an operational requirement, this is a finding.
Fix: F-37955r618682_fix
Document the "vsftpd" package with the ISSO as an operational requirement or remove it from the system with the following command: > sudo zypper remove vsftpd
- RMF Control
- AC-8
- Severity
- Medium
- CCI
- CCI-000048
- Version
- SLES-15-010040
- Vuln IDs
-
- V-234805
- Rule IDs
-
- SV-234805r622137_rule
Checks: C-37993r618684_chk
Verify the SUSE operating system displays the Standard Mandatory DoD Notice and Consent Banner before granting access to the system via SSH. Check the issue file to verify it contains one of the DoD required banners. If it does not, this is a finding. > more /etc/issue The output must display the following DoD-required banner text: "You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. -At any time, the USG may inspect and seize data stored on this IS. -Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose. -This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy. -Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details." If the output does not display the banner text, this is a finding. Check the banner setting for sshd_config: > sudo grep "Banner" /etc/ssh/sshd_config The output must show the value of "Banner" set to "/etc/issue". An example is shown below: > sudo grep "Banner" /etc/ssh/sshd_config Banner /etc/issue If it does not, this is a finding.
Fix: F-37956r618685_fix
Configure the SUSE operating system to display the Standard Mandatory DoD Notice and Consent Banner before granting access to the system by running the following commands: Edit the "sshd_config" file and edit the Banner flag to be the following: Banner /etc/issue/ Restart the sshd daemon: > sudo systemctl restart sshd.service To configure the system logon banner, edit the "/etc/issue" file. Replace the default text inside with the Standard Mandatory DoD banner text: "You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. -At any time, the USG may inspect and seize data stored on this IS. -Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose. -This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy. -Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details."
- RMF Control
- AC-8
- Severity
- Medium
- CCI
- CCI-000048
- Version
- SLES-15-010050
- Vuln IDs
-
- V-234806
- Rule IDs
-
- SV-234806r622137_rule
Checks: C-37994r618687_chk
Verify the SUSE operating system displays the Standard Mandatory DoD Notice and Consent Banner until users acknowledge the usage conditions and take explicit actions to log on via the local GUI. Note: If a graphical user interface is not installed, this requirement is Not Applicable. Check the configuration by running the following command: > more /etc/gdm/Xsession The beginning of the file must contain the following text immediately after (#!/bin/sh): if ! zenity --text-info \ --title "Consent" \ --filename=/etc/gdm/banner \ --no-markup \ --checkbox="Accept." 10 10; then sleep 1; exit 1; fi If the beginning of the file does not contain the above text immediately after the line (#!/bin/sh), this is a finding.
Fix: F-37957r618688_fix
Configure the SUSE operating system to display the Standard Mandatory DoD Notice and Consent Banner until users acknowledge the usage conditions and take explicit actions to log on for further access. Note: If a graphical user interface is not installed, this requirement is Not Applicable. Edit the file "/etc/gdm/Xsession". Add the following content to the file "/etc/gdm/Xsession" below the line #!/bin/sh: if ! zenity --text-info \ --title "Consent" \ --filename=/etc/gdm/banner \ --no-markup \ --checkbox="Accept." 10 10; then sleep 1; exit 1; fi Save the file "/etc/gdm/Xsession".
- RMF Control
- AC-8
- Severity
- Medium
- CCI
- CCI-000050
- Version
- SLES-15-010060
- Vuln IDs
-
- V-234807
- Rule IDs
-
- SV-234807r622137_rule
Checks: C-37995r618690_chk
Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable. Verify the SUSE operating system file "/etc/gdm/banner" contains the Standard Mandatory DoD Notice and Consent Banner text by running the following command: > more /etc/gdm/banner If the file does not contain the following text, this is a finding. "You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. -At any time, the USG may inspect and seize data stored on this IS. -Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose. -This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy. -Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details."
Fix: F-37958r618691_fix
Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable. Configure the SUSE operating system file "/etc/gdm/banner" to contain the Standard Mandatory DoD Notice and Consent Banner by running the following commands: > sudo vi /etc/gdm/banner Add the following information to the file: "You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. -At any time, the USG may inspect and seize data stored on this IS. -Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose. -This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy. -Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details."
- RMF Control
- AC-8
- Severity
- Medium
- CCI
- CCI-001384
- Version
- SLES-15-010080
- Vuln IDs
-
- V-234808
- Rule IDs
-
- SV-234808r622137_rule
Checks: C-37996r618693_chk
Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable. Verify the SUSE operating system displays a banner before local or remote access to the system via a graphical user logon. Check that the SUSE operating system displays a banner at the logon screen by performing the following command: > grep banner-message-enable /etc/dconf/db/gdm.d/* banner-message-enable=true > cat /etc/dconf/profile/gdm user-db:user system-db:gdm file-db:/usr/share/gdm/greeter-dconf-defaults If "banner-message-enable" is set to "false" or is missing completely, this is a finding.
Fix: F-37959r618694_fix
Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable. Configure the SUSE operating system to display a banner before local or remote access to the system via a graphical user logon. Create a database that will contain the system-wide graphical user logon settings (if it does not already exist) with the following command: > sudo mkdir -p /etc/dconf/db/gdm.d > sudo touch /etc/dconf/db/gdm.d/01-banner-message Add the following content into /etc/dconf/profile/gdm: user-db:user system-db:gdm file-db:/usr/share/gdm/greeter-dconf-defaults Add the following line to the "[org/gnome/login-screen]" section of the "/etc/dconf/db/gdm.d/01-banner-message" file: [org/gnome/login-screen] banner-message-enable=true Update the system databases: > sudo dconf update Users must log out and back in again before the system-wide settings take effect.
- RMF Control
- AC-8
- Severity
- Medium
- CCI
- CCI-001384
- Version
- SLES-15-010090
- Vuln IDs
-
- V-234809
- Rule IDs
-
- SV-234809r622137_rule
Checks: C-37997r618696_chk
Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable. Verify the SUSE operating system displays the approved Standard Mandatory DoD Notice before granting local or remote access to the system via a graphical user logon. Check that the SUSE operating system displays the exact approved Standard Mandatory DoD Notice and Consent Banner text by performing the following command: > grep banner-message-text /etc/dconf/db/gdm.d/* banner-message-text= "You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only.\nBy using this IS (which includes any device attached to this IS), you consent to the following conditions:\n-The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations.\n-At any time, the USG may inspect and seize data stored on this IS.\n-Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose.\n-This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy.\n-Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details." Note: The "\n" characters are for formatting only. They will not be displayed on the GUI. If the banner text does not exactly match the approved Standard Mandatory DoD Notice and Consent Banner, this is a finding.
Fix: F-37960r618697_fix
Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable. Configure the SUSE operating system to display the approved Standard Mandatory DoD Notice before granting local or remote access to the system via a graphical user logon. Create a database to contain the system wide graphical user logon settings (if it does not already exist) by performing the following command: > sudo touch /etc/dconf/db/gdm.d/01-banner-message Add the following lines to the "[org/gnome/login-screen]" section of the "dconf/db/gdm.d/01-banner-message" file: [org/gnome/login-screen] banner-message-text="You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only.\nBy using this IS (which includes any device attached to this IS), you consent to the following conditions:\n-The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations.\n-At any time, the USG may inspect and seize data stored on this IS.\n-Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose.\n-This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy.\n-Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details." Note: The "\n" characters are for formatting only. They will not be displayed on the GUI. Run the following command to update the database: > sudo dconf update
- RMF Control
- AC-11
- Severity
- Medium
- CCI
- CCI-000056
- Version
- SLES-15-010100
- Vuln IDs
-
- V-234810
- Rule IDs
-
- SV-234810r622137_rule
Checks: C-37998r618699_chk
Verify the SUSE operating system allows the user to lock the GUI. Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable. Run the following command: > sudo gsettings get org.gnome.desktop.lockdown disable-lock-screen If the result is "true", this is a finding.
Fix: F-37961r618700_fix
Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable. This command must be run from an X11 session; otherwise, the command will not work correctly. Configure the SUSE operating system to allow the user to lock the GUI. Run the following command to configure the SUSE operating system to allow the user to lock the GUI: > sudo gsettings set org.gnome.desktop.lockdown disable-lock-screen false
- RMF Control
- AC-11
- Severity
- Low
- CCI
- CCI-000056
- Version
- SLES-15-010110
- Vuln IDs
-
- V-234811
- Rule IDs
-
- SV-234811r622137_rule
Checks: C-37999r618702_chk
Check that the SUSE operating system has the "vlock" package installed by running the following command: > zypper search --installed-only --match-exact --provides vlock If the command outputs "no matching items found", this is a finding.
Fix: F-37962r618703_fix
Allow users to lock the console by installing the "kbd" package using zypper: > sudo zypper install kbd
- RMF Control
- AC-11
- Severity
- Medium
- CCI
- CCI-000057
- Version
- SLES-15-010120
- Vuln IDs
-
- V-234812
- Rule IDs
-
- SV-234812r622137_rule
Checks: C-38000r618705_chk
Verify the SUSE operating system initiates a session lock after a 15-minute period of inactivity via the GUI by running the following command: Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable. > sudo gsettings get org.gnome.desktop.session idle-delay uint32 900 If the command does not return a value less than or equal to "900", this is a finding.
Fix: F-37963r618706_fix
Configure the SUSE operating system to initiate a session lock after a 15-minute period of inactivity of the GUI by running the following command: Note: If the system does not have a graphical user interface installed, this requirement is Not Applicable. This command must be run from an X11 session, otherwise the command will not work correctly. > sudo gsettings set org.gnome.desktop.session idle-delay 900
- RMF Control
- AC-11
- Severity
- Medium
- CCI
- CCI-000057
- Version
- SLES-15-010130
- Vuln IDs
-
- V-234813
- Rule IDs
-
- SV-234813r622137_rule
Checks: C-38001r618708_chk
Verify the SUSE operating system must initiate a session logout after a 15-minute period of inactivity for all connection types. Check the proper script exists to kill an idle session after a 15-minute period of inactivity with the following command: > cat /etc/profile.d/autologout.sh TMOUT=900 readonly TMOUT export TMOUT If the file "/etc/profile.d/autologout.sh" does not exist or the output from the function call is not the same, this is a finding.
Fix: F-37964r618709_fix
Configure the SUSE operating system to initiate a session lock after a 15-minute period of inactivity by modifying or creating (if it does not already exist) the "/etc/profile.d/autologout.sh" file and add the following lines to it: TMOUT=900 readonly TMOUT export TMOUT Set the proper permissions for the "/etc/profile.d/autologout.sh" file with the following command: > sudo chmod +x /etc/profile.d/autologout.sh
- RMF Control
- AC-11
- Severity
- Low
- CCI
- CCI-000060
- Version
- SLES-15-010140
- Vuln IDs
-
- V-234814
- Rule IDs
-
- SV-234814r622137_rule
Checks: C-38002r618711_chk
Verify the SUSE operating system conceals via the session lock information previously visible on the display with a publicly viewable image in the GUI. Note: If the system does not have X Windows installed, this requirement is Not Applicable. Check that the lock screen is set to a publicly viewable image by running the following command: > sudo gsettings get org.gnome.desktop.screensaver picture-uri 'file:///usr/share/wallpapers/SLE-default-static.xml' If nothing is returned or "org.gnome.desktop.screensaver" is not set, this is a finding.
Fix: F-37965r618712_fix
Note: If the system does not have X Windows installed, this requirement is Not Applicable. Configure the SUSE operating system to use a publically viewable image by finding the Settings menu and then navigate to the Background selection section: - Click "Activities" on the top left. - Click "Show Applications" at the bottom of the Activities menu. - Click the "Settings" icon. - Click "Background" from left hand menu. - Select image and set the Lock Screen image to the user's choice. - Exit Settings Dialog.
- RMF Control
- AC-17
- Severity
- Medium
- CCI
- CCI-000067
- Version
- SLES-15-010150
- Vuln IDs
-
- V-234815
- Rule IDs
-
- SV-234815r622137_rule
Checks: C-38003r618714_chk
Verify SSH is configured to verbosely log connection attempts and failed logon attempts to the SUSE operating system. Check that the SSH daemon configuration verbosely logs connection attempts and failed logon attempts to the server with the following command: > sudo grep -i loglevel /etc/ssh/sshd_config The output message must contain the following text: LogLevel VERBOSE If the output message does not contain "VERBOSE", the LogLevel keyword is missing, or the line is commented out, this is a finding.
Fix: F-37966r618715_fix
Configure SSH to verbosely log connection attempts and failed logon attempts to the SUSE operating system. Add or update the following line in the "/etc/ssh/sshd_config" file: LogLevel VERBOSE The SSH service will need to be restarted in order for the changes to take effect.
- RMF Control
- AC-17
- Severity
- Medium
- CCI
- CCI-000068
- Version
- SLES-15-010160
- Vuln IDs
-
- V-234816
- Rule IDs
-
- SV-234816r877398_rule
Checks: C-38004r618717_chk
Verify that the SUSE operating system implements DoD-approved encryption to protect the confidentiality of SSH remote connections. Check the SSH daemon configuration for allowed ciphers with the following command: > sudo grep -i ciphers /etc/ssh/sshd_config | grep -v '^#' Ciphers aes256-ctr,aes192-ctr,aes128-ctr If any ciphers other than "aes256-ctr", "aes192-ctr", or "aes128-ctr" are listed, the order differs from the example above, or the "Ciphers" keyword is missing, this is a finding.
Fix: F-37967r618718_fix
Edit the SSH daemon configuration (/etc/ssh/sshd_config) and remove any ciphers not starting with "aes" and remove any ciphers ending with "cbc". If necessary, add a "Ciphers" line: Ciphers aes256-ctr,aes192-ctr,aes128-ctr Restart the SSH daemon: > sudo systemctl restart sshd.service
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000185
- Version
- SLES-15-010170
- Vuln IDs
-
- V-234817
- Rule IDs
-
- SV-234817r854185_rule
Checks: C-38005r618720_chk
Verify the SUSE operating system for PKI-based authentication had valid certificates by constructing a certification path (which includes status information) to an accepted trust anchor. Check that the certification path to an accepted trust anchor for multifactor authentication is implemented with the following command: > grep cert_policy /etc/pam_pkcs11/pam_pkcs11.conf cert_policy = ca,oscp_on,signature,crl_auto; If "cert_policy" is not set to include "ca", this is a finding.
Fix: F-37968r618721_fix
Configure the SUSE operating system for PKI-based authentication to validate certificates by constructing a certification path (which includes status information) to an accepted trust anchor. Modify all of the cert_policy lines in "/etc/pam_pkcs11/pam_pkcs11.conf" to include "ca": cert_policy = ca,signature,oscp_on; Note: Additional certificate validation polices are permitted. Additional information on the configuration of multifactor authentication on the SUSE operating system can be found at https://www.suse.com/communities/blog/configuring-smart-card-authentication-suse-linux-enterprise/.
- RMF Control
- IA-5
- Severity
- High
- CCI
- CCI-000197
- Version
- SLES-15-010180
- Vuln IDs
-
- V-234818
- Rule IDs
-
- SV-234818r877396_rule
Checks: C-38006r618723_chk
Verify the telnet-server package is not installed on the SUSE operating system. Check that the telnet-server package is not installed on the SUSE operating system by running the following command: > zypper info telnet-server | grep Installed If the telnet-server package is installed, this is a finding.
Fix: F-37969r618724_fix
Remove the telnet-server package from the SUSE operating system by running the following command: > sudo zypper remove telnet-server
- RMF Control
- AC-3
- Severity
- High
- CCI
- CCI-000213
- Version
- SLES-15-010190
- Vuln IDs
-
- V-234819
- Rule IDs
-
- SV-234819r622137_rule
Checks: C-38007r618726_chk
Verify that the SUSE operating system has set an encrypted root password. Note: If the system does not use a BIOS this requirement is Not Applicable. Check that the encrypted password is set for root with the following command: > sudo cat /boot/grub2/grub.cfg | grep -i password password_pbkdf2 root grub.pbkdf2.sha512.10000.VeryLongString If the root password entry does not begin with "password_pbkdf2", this is a finding.
Fix: F-37970r618727_fix
Note: If the system does not use a BIOS this requirement is Not Applicable. Configure the SUSE operating system to encrypt the boot password. Generate an encrypted (GRUB2) password for root with the following command: > grub2-mkpasswd-pbkdf2 Enter Password: Reenter Password: PBKDF2 hash of your password is grub.pbkdf2.sha512.10000.MFU48934NJD84NF8NSD39993JDHF84NG Using the hash from the output, modify the "/etc/grub.d/40_custom" file and add the following two lines to add a boot password for the root entry: set superusers="root" password_pbkdf2 root grub.pbkdf2.sha512.VeryLongString Generate an updated "grub.conf" file with the new password using the following commands: > sudo grub2-mkconfig --output=/tmp/grub2.cfg > sudo mv /tmp/grub2.cfg /boot/grub2/grub.cfg
- RMF Control
- AC-3
- Severity
- High
- CCI
- CCI-000213
- Version
- SLES-15-010200
- Vuln IDs
-
- V-234820
- Rule IDs
-
- SV-234820r622137_rule
Checks: C-38008r618729_chk
Verify that the SUSE operating system has set an encrypted root password. Note: If the system does not use UEFI, this requirement is Not Applicable. Check that the encrypted password is set for root with the following command: > sudo cat /boot/efi/EFI/sles/grub.cfg | grep -i password password_pbkdf2 root grub.pbkdf2.sha512.10000.VeryLongString If the root password entry does not begin with "password_pbkdf2", this is a finding.
Fix: F-37971r618730_fix
Note: If the system does not use UEFI, this requirement is Not Applicable. Configure the SUSE operating system to encrypt the boot password. Generate an encrypted (GRUB2) password for root with the following command: > grub2-mkpasswd-pbkdf2 Enter Password: Reenter Password: PBKDF2 hash of your password is grub.pbkdf2.sha512.10000.MFU48934NJD84NF8NSD39993JDHF84NG Using the hash from the output, modify the "/etc/grub.d/40_custom" file and add the following two lines to add a boot password for the root entry: set superusers="root" password_pbkdf2 root grub.pbkdf2.sha512.VeryLongString Generate an updated "grub.conf" file with the new password using the following commands: > sudo grub2-mkconfig --output=/tmp/grub2.cfg > sudo mv /tmp/grub2.cfg /boot/efi/EFI/sles/grub.cfg
- RMF Control
- CM-7
- Severity
- Medium
- CCI
- CCI-000382
- Version
- SLES-15-010220
- Vuln IDs
-
- V-234821
- Rule IDs
-
- SV-234821r854186_rule
Checks: C-38009r618732_chk
Verify the SUSE operating system is configured to prohibit or restrict the use of functions, ports, protocols, and/or services as defined in the PPSM CAL and vulnerability assessments. Check that the "firewalld.service" is enabled and running by running the following command: > systemctl status firewalld.service firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: disabled) Active: active (running) since Wed 2019-11-06 10:58:11 CET; 24h ago Docs: man:firewalld(1) Main PID: 1105 (firewalld) Tasks: 2 (limit: 4915) CGroup: /system.slice/firewalld.service ??1105 /usr/bin/python3 -Es /usr/sbin/firewalld --nofork --nopid If the service is not enabled, this is a finding. If the service is not active, this is a finding. Check the firewall configuration for any unnecessary or prohibited functions, ports, protocols, and/or services by running the following command: > sudo firewall-cmd --list-all Ask the System Administrator for the site or program PPSM Component Local Services Assessment (Component Local Services Assessment (CLSA). Verify the services allowed by the firewall match the PPSM CLSA. If there are any additional ports, protocols, or services that are not included in the PPSM CLSA, this is a finding. If there are any ports, protocols, or services that are prohibited by the PPSM CAL, this is a finding.
Fix: F-37972r618733_fix
Configure the SUSE operating system is configured to prohibit or restrict the use of functions, ports, protocols, and/or services as defined in the PPSM CAL and vulnerability assessments. Add/modify /etc/firewalld configuration files to comply with the PPSM CAL. Enable the "firewalld.service" by running the following command: > sudo systemctl enable firewalld.service Start the "firewalld.service" by running the following command: > sudo systemctl start firewalld.service
- RMF Control
- IA-2
- Severity
- Medium
- CCI
- CCI-000764
- Version
- SLES-15-010230
- Vuln IDs
-
- V-234822
- Rule IDs
-
- SV-234822r622137_rule
Checks: C-38010r618735_chk
Verify the SUSE operating system contains no duplicate UIDs for interactive users. Check that the SUSE operating system contains no duplicate UIDs for interactive users by running the following command: > awk -F ":" 'list[$3]++{print $1, $3}' /etc/passwd If output is produced, this is a finding.
Fix: F-37973r618736_fix
Configure the SUSE operating system to contain no duplicate UIDs for interactive users. Edit the file "/etc/passwd" and provide each interactive user account that has a duplicate UID with a unique UID.
- RMF Control
- IA-3
- Severity
- Medium
- CCI
- CCI-000778
- Version
- SLES-15-010240
- Vuln IDs
-
- V-234823
- Rule IDs
-
- SV-234823r854187_rule
Checks: C-38011r618738_chk
Verify the SUSE operating system disables the ability to automount devices. Check to see if automounter service is active with the following command: > systemctl status autofs autofs.service - Automounts filesystems on demand Loaded: loaded (/usr/lib/systemd/system/autofs.service; disabled) Active: inactive (dead) If the "autofs" status is set to "active" and is not documented with the Information System Security Officer (ISSO) as an operational requirement, this is a finding.
Fix: F-37974r618739_fix
Configure the SUSE operating system to disable the ability to automount devices. Turn off the automount service with the following command: > systemctl stop autofs > systemctl disable autofs If "autofs" is required for Network File System (NFS), it must be documented with the ISSO.
- RMF Control
- IA-7
- Severity
- Medium
- CCI
- CCI-000803
- Version
- SLES-15-010260
- Vuln IDs
-
- V-234825
- Rule IDs
-
- SV-234825r622137_rule
Checks: C-38013r618744_chk
Verify the SUSE operating system requires that the "ENCRYPT_METHOD" value in "/etc/login.defs" is set to "SHA512". Check the value of "ENCRYPT_METHOD" value in "/etc/login.defs" with the following command: > grep "^ENCRYPT_METHOD " /etc/login.defs ENCRYPT_METHOD SHA512 If "ENCRYPT_METHOD" is not set to "SHA512", if any values other that "SHA512" are configured, or if no output is produced, this is a finding.
Fix: F-37976r618745_fix
Configure the SUSE operating system to require "ENCRYPT_METHOD" of "SHA512". Edit the "/etc/login.defs" file with the following line: ENCRYPT_METHOD SHA512
- RMF Control
- MA-4
- Severity
- Medium
- CCI
- CCI-000877
- Version
- SLES-15-010270
- Vuln IDs
-
- V-234826
- Rule IDs
-
- SV-234826r877395_rule
Checks: C-38014r618747_chk
Verify the SUSE operating system SSH daemon is configured to only use MACs that employ FIPS 140-2 approved hashes. Check that the SSH daemon is configured to only use MACs that employ FIPS 140-2 approved hashes with the following command: > sudo grep -i macs /etc/ssh/sshd_config MACs hmac-sha2-512,hmac-sha2-256 If any ciphers other than "hmac-sha2-512" or "hmac-sha2-256" are listed, the order differs from the example above, they are missing, or the returned line is commented out, this is a finding.
Fix: F-37977r618748_fix
Configure the SUSE operating system SSH daemon to only use MACs that employ FIPS 140-2 approved hashes. Edit the "/etc/ssh/sshd_config" file to uncomment or add the line for the "MACs" keyword and set its value to "hmac-sha2-512" and/or "hmac-sha2-256" (The file might be named differently or be in a different location): MACs hmac-sha2-512,hmac-sha2-256
- RMF Control
- MA-4
- Severity
- Medium
- CCI
- CCI-000879
- Version
- SLES-15-010280
- Vuln IDs
-
- V-234827
- Rule IDs
-
- SV-234827r854189_rule
Checks: C-38015r618750_chk
Verify the SUSE operating system SSH daemon is configured to timeout idle sessions. Check that the "ClientAliveInterval" parameter is set to a value of "600" with the following command: > sudo grep -i clientalive /etc/ssh/sshd_config ClientAliveInterval 600 If "ClientAliveInterval" is not set to "600" in "/etc/ssh/sshd_config", this is a finding.
Fix: F-37978r618751_fix
Configure the SUSE operating system SSH daemon to timeout idle sessions. Add or modify (to match exactly) the following line in the "/etc/ssh/sshd_config" file: ClientAliveInterval 600 The SSH daemon must be restarted for any changes to take effect.
- RMF Control
- SC-4
- Severity
- Medium
- CCI
- CCI-001090
- Version
- SLES-15-010300
- Vuln IDs
-
- V-234828
- Rule IDs
-
- SV-234828r622137_rule
Checks: C-38016r618753_chk
Verify the SUSE operating system prevents unauthorized and unintended information transfer via the shared system resources. Check that world-writable directories have the sticky bit set with the following command: > sudo find / \( -path /.snapshots -o -path /sys -o -path /proc \) -prune -o -perm -002 -type d -exec ls -lLd {} \; 256 0 drwxrwxrwt 1 root root 4096 Jun 14 06:45 /tmp If any of the returned directories do not have the sticky bit set, or are not documented as having the write permission for the other class, this is a finding.
Fix: F-37979r618754_fix
Configure the SUSE operating system shared system resources to prevent any unauthorized and unintended information transfer by setting the sticky bit for all world-writable directories. An example of a world-writable directory is "/tmp" directory. Set the sticky bit on all of the world-writable directories (using the "/tmp" directory as an example) with the following command: > sudo chmod 1777 /tmp For every world-writable directory, replace "/tmp" in the command above with the world-writable directory that does not have the sticky bit set.
- RMF Control
- SC-5
- Severity
- Medium
- CCI
- CCI-001095
- Version
- SLES-15-010310
- Vuln IDs
-
- V-234829
- Rule IDs
-
- SV-234829r622137_rule
Checks: C-38017r618756_chk
Verify the SUSE operating system is configured to use IPv4 TCP syncookies. Check to see if syncookies are used with the following command: > sudo sysctl net.ipv4.tcp_syncookies net.ipv4.tcp_syncookies = 1 If the network parameter "ipv4.tcp_syncookies" is not equal to "1" or nothing is returned, this is a finding.
Fix: F-37980r618757_fix
Configure the SUSE operating system to use IPv4 TCP syncookies by running the following command as an administrator: > sudo sysctl -w net.ipv4.tcp_syncookies=1 If "1" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv4.tcp_syncookies=1" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- MA-4
- Severity
- Medium
- CCI
- CCI-000879
- Version
- SLES-15-010320
- Vuln IDs
-
- V-234830
- Rule IDs
-
- SV-234830r854190_rule
Checks: C-38018r618759_chk
Verify that all network connections associated with SSH traffic are automatically terminated at the end of the session or after 10 minutes of inactivity. Check that the "ClientAliveCountMax" variable is set to a value of "0" or less by performing the following command: > sudo grep -i clientalive /etc/ssh/sshd_config ClientAliveInterval 600 ClientAliveCountMax 0 If "ClientAliveCountMax" does not exist or "ClientAliveCountMax" is not set to a value of "0" or less in "/etc/ssh/sshd_config", or the line is commented out, this is a finding.
Fix: F-37981r618760_fix
Configure the SUSE operating system to automatically terminate all network connections associated with SSH traffic at the end of a session or after a 10-minute period of inactivity. Modify or append the following lines in the "/etc/ssh/sshd_config" file: ClientAliveCountMax 0 In order for the changes to take effect, the SSH daemon must be restarted. > sudo systemctl restart sshd.service
- RMF Control
- SC-28
- Severity
- Medium
- CCI
- CCI-001199
- Version
- SLES-15-010330
- Vuln IDs
-
- V-234831
- Rule IDs
-
- SV-234831r854191_rule
Checks: C-38019r618762_chk
Verify the SUSE operating system prevents unauthorized disclosure or modification of all information requiring at rest protection by using disk encryption. Determine the partition layout for the system with the following command: > sudo fdisk -l Device Boot Start End Sectors Size Id Type /dev/sda1 2048 4208639 4206592 2G 82 Linux swap /dev/sda2 * 4208640 53479423 49270784 23.5G 83 Linux /dev/sda3 53479424 125829119 72349696 34.5G 83 Linux Verify the system partitions are all encrypted with the following command: > sudo more /etc/crypttab cr_root UUID=26d4a101-7f48-4394-b730-56dc00e65f64 cr_home UUID=f5b8a790-14cb-4b82-882d-707d52f27765 cr_swap UUID=f2d86128-f975-478d-a5b0-25806c900eac Every persistent disk partition present on the system must have an entry in the file. If any partitions other than pseudo file systems (such as /proc or /sys) are not listed or "/etc/crypttab" does not exist, this is a finding.
Fix: F-37982r618763_fix
Configure the SUSE operating system to prevent unauthorized modification of all information at rest by using disk encryption. Encrypting a partition in an already-installed system is more difficult because of the need to resize and change existing partitions. To encrypt an entire partition, dedicate a partition for encryption in the partition layout. The standard partitioning proposal as suggested by YaST (installation and configuration tool for Linux) does not include an encrypted partition by default. Add it manually in the partitioning dialog. Refer to the document "SUSE Linux Enterprise Server 15 SP1 - Security Guide", Section 12.1.2, for a detailed disk encryption guide: https://documentation.suse.com/sles/15-SP1/html/SLES-all/cha-security-cryptofs.html#sec-security-cryptofs-y2-part-run
- RMF Control
- SI-11
- Severity
- Medium
- CCI
- CCI-001312
- Version
- SLES-15-010340
- Vuln IDs
-
- V-234832
- Rule IDs
-
- SV-234832r880884_rule
Checks: C-38020r880882_chk
Verify the SUSE operating system has all system log files under the /var/log directory with a permission set to "640", by using the following command: Note: The btmp, wtmp, and lastlog files are excluded. Refer to the Discussion for details. > sudo find /var/log -perm /137 ! -name '*[bw]tmp' ! -name '*lastlog' -type f -exec stat -c "%n %a" {} \; If command displays any output, this is a finding.
Fix: F-37983r880883_fix
Configure the SUSE operating system to set permissions of all log files under /var/log directory to "640" or more restricted, by using the following command: Note: The btmp, wtmp, and lastlog files are excluded. Refer to the Discussion for details. > sudo find /var/log -perm /137 ! -name '*[bw]tmp' ! -name '*lastlog' -type f -exec chmod 640 '{}' \;
- RMF Control
- SI-11
- Severity
- Medium
- CCI
- CCI-001314
- Version
- SLES-15-010350
- Vuln IDs
-
- V-234833
- Rule IDs
-
- SV-234833r622137_rule
Checks: C-38021r618768_chk
Verify the SUSE operating system prevents unauthorized users from accessing system error messages. Check the "/var/log/messages" file permissions with the following command: > sudo stat -c "%n %U:%G %a" /var/log/messages /var/log/messages root:root 640 Check that "permissions.local" file contains the correct permissions rules with the following command: > grep -i messages /etc/permissions.local /var/log/messages root:root 640 If the effective permissions do not match the "permissions.local" file, the command does not return any output, or is commented out, this is a finding.
Fix: F-37984r618769_fix
Configure the SUSE operating system to prevent unauthorized users from accessing system error messages. Add or update the following rules in "/etc/permissions.local": /var/log/messages root:root 640 Set the correct permissions with the following command: > sudo chkstat --set --system
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010351
- Vuln IDs
-
- V-234834
- Rule IDs
-
- SV-234834r622137_rule
Checks: C-38022r618771_chk
Verify the system-wide shared library files contained in the directories "/lib", "/lib64", "/usr/lib", and "/usr/lib64" have mode "0755" or less permissive. Check that the system-wide shared library files have mode "0755" or less permissive with the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 -perm /022 -type f -exec stat -c "%n %a" '{}' \; If any files are found to be group-writable or world-writable, this is a finding.
Fix: F-37985r618772_fix
Configure the library files to be protected from unauthorized access. Run the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 -perm /022 -type f -exec chmod 755 '{}' \;
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010352
- Vuln IDs
-
- V-234835
- Rule IDs
-
- SV-234835r622137_rule
Checks: C-38023r618774_chk
Verify the system-wide shared library directories "/lib", "/lib64", "/usr/lib" and "/usr/lib64" have mode "0755" or less permissive. Check that the system-wide shared library directories have mode "0755" or less permissive with the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 -perm /022 -type d -exec stat -c "%n %a" '{}' \; If any of the aforementioned directories are found to be group-writable or world-writable, this is a finding.
Fix: F-37986r618775_fix
Configure the shared library directories to be protected from unauthorized access. Run the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 -perm /022 -type d -exec chmod 755 '{}' \;
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010353
- Vuln IDs
-
- V-234836
- Rule IDs
-
- SV-234836r622137_rule
Checks: C-38024r618777_chk
Verify the system-wide shared library files contained in the directories "/lib", "/lib64", "/usr/lib" and "/usr/lib64" are owned by root. Check that the system-wide shared library files are owned by root with the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 ! -user root -type f -exec stat -c "%n %U" '{}' \; If any system wide library file is returned, this is a finding.
Fix: F-37987r618778_fix
Configure the system library files to be protected from unauthorized access. Run the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 ! -user root -type f -exec chown root '{}' \;
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010354
- Vuln IDs
-
- V-234837
- Rule IDs
-
- SV-234837r622137_rule
Checks: C-38025r618780_chk
Verify the system-wide shared library directories "/lib", "/lib64", "/usr/lib/" and "/usr/lib64" are owned by root. Check that the system-wide shared library directories are owned by root with the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 ! -user root -type d -exec stat -c "%n %U" '{}' \; If any system wide library directory is returned, this is a finding.
Fix: F-37988r618781_fix
Configure the library files and their respective parent directories to be protected from unauthorized access. Run the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 ! -user root -type d -exec chown root '{}' \;
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010355
- Vuln IDs
-
- V-234838
- Rule IDs
-
- SV-234838r622137_rule
Checks: C-38026r618783_chk
Verify the system-wide library files contained in the directories "/lib", "/lib64", "/usr/lib" and "/usr/lib64" are group-owned by root. Check that the system-wide library files are group-owned by root with the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 ! -group root -type f -exec stat -c "%n %G" '{}' \; If any system wide shared library file is returned, this is a finding.
Fix: F-37989r618784_fix
Configure the system library files to be protected from unauthorized access. Run the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 ! -group root -type f -exec chgrp root '{}' \;
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010356
- Vuln IDs
-
- V-234839
- Rule IDs
-
- SV-234839r622137_rule
Checks: C-38027r618786_chk
Verify the system-wide library directories "/lib", "/lib64", "/usr/lib" and "/usr/lib64" are group-owned by root. Check that the system-wide library directories are group-owned by root with the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 ! -group root -type d -exec stat -c "%n %G" '{}' \; If any system wide shared library directory is returned, this is a finding.
Fix: F-37990r618787_fix
Configure the system library directories to be protected from unauthorized access. Run the following command: > sudo find /lib /lib64 /usr/lib /usr/lib64 ! -group root -type d -exec chgrp root '{}' \;
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010357
- Vuln IDs
-
- V-234840
- Rule IDs
-
- SV-234840r622137_rule
Checks: C-38028r618789_chk
Verify the system commands contained in the following directories have mode "0755" or less permissive: /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin Check that the system command files have mode "0755" or less permissive with the following command: > find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin -perm /022 -type f -exec stat -c "%n %a" '{}' \; If any files are found to be group-writable or world-writable, this is a finding.
Fix: F-37991r618790_fix
Configure the system commands to be protected from unauthorized access. Run the following command: > sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin -perm /022 -type f -exec chmod 755 '{}' \;
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010358
- Vuln IDs
-
- V-234841
- Rule IDs
-
- SV-234841r622137_rule
Checks: C-38029r618792_chk
Verify the system commands directories have mode "0755" or less permissive: /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin Check that the system command directories have mode "0755" or less permissive with the following command: > find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin -perm /022 -type d -exec stat -c "%n %a" '{}' \; If any directories are found to be group-writable or world-writable, this is a finding.
Fix: F-37992r618793_fix
Configure the system commands directories to be protected from unauthorized access. Run the following command: > sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin -perm /022 -type d -exec chmod -R 755 '{}' \;
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010359
- Vuln IDs
-
- V-234842
- Rule IDs
-
- SV-234842r622137_rule
Checks: C-38030r618795_chk
Verify the system commands contained in the following directories are owned by root: /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin Use the following command for the check: > sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin ! -user root -type f -exec stat -c "%n %U" '{}' \; If any system commands are returned, this is a finding.
Fix: F-37993r618796_fix
Configure the system commands - and their respective parent directories - to be protected from unauthorized access. Run the following command: > sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin ! -user root -type f -exec chown root '{}' \;
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010360
- Vuln IDs
-
- V-234843
- Rule IDs
-
- SV-234843r622137_rule
Checks: C-38031r618798_chk
Verify the system commands directories are owned by root: /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin Use the following command for the check: > sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin ! -user root -type d -exec stat -c "%n %U" '{}' \; If any system commands directories are returned, this is a finding.
Fix: F-37994r618799_fix
Configure the system commands directories to be protected from unauthorized access. Run the following command: > sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin ! -user root -type d -exec chown root '{}' \;
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010361
- Vuln IDs
-
- V-234844
- Rule IDs
-
- SV-234844r833003_rule
Checks: C-38032r833001_chk
Verify the system commands contained in the following directories are group-owned by root or a system account: /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin Run the check with the following command: > sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin ! -group root -type f -exec stat -c "%n %G" '{}' \; If any system commands are returned that are not Set Group ID upon execution (SGID) files and group-owned by a required system account, this is a finding.
Fix: F-37995r833002_fix
Configure the system commands to be protected from unauthorized access. Run the following command, replacing "[FILE]" with any system command file not group-owned by "root" or a required system account. > sudo chgrp root [FILE]
- RMF Control
- CM-5
- Severity
- Medium
- CCI
- CCI-001499
- Version
- SLES-15-010362
- Vuln IDs
-
- V-234845
- Rule IDs
-
- SV-234845r622137_rule
Checks: C-38033r618804_chk
Verify the system commands directories are group-owned by root: /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin Run the check with the following command: > sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin ! -group root -type d -exec stat -c "%n %G" '{}' \; If any system commands directories are returned that are not Set Group ID up on execution (SGID) files and owned by a privileged account, this is a finding.
Fix: F-37996r618805_fix
Configure the system commands directories to be protected from unauthorized access. Run the following command: > sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin ! -group root -type d -exec chgrp root '{}' \;
- RMF Control
- AC-17
- Severity
- Medium
- CCI
- CCI-002322
- Version
- SLES-15-010370
- Vuln IDs
-
- V-234846
- Rule IDs
-
- SV-234846r854192_rule
Checks: C-38034r618807_chk
Verify "firewalld" is configured to protect the SUSE operating system. Run the following command: > systemctl status firewalld.service firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: disabled) Active: active (running) since Wed 2019-11-06 10:58:11 CET; 24h ago Docs: man:firewalld(1) Main PID: 1105 (firewalld) Tasks: 2 (limit: 4915) CGroup: /system.slice/firewalld.service ??1105 /usr/bin/python3 -Es /usr/sbin/firewalld --nofork --nopid If the service is not enabled, this is a finding. If the service is not active, this is a finding.
Fix: F-37997r618808_fix
Configure the SUSE operating system to enable the firewall service. This is needed to be able to immediately disconnect or disable remote access to the whole system. Enable the "firewalld.service" by running the following command: > sudo systemctl enable firewalld.service Start the "firewalld.service" by running the following command: > sudo systemctl start firewalld.service To immediately disconnect or disable remote access the firewall needs to be set into panic mode. > sudo firewall-cmd --panic-on To enable remote connection again, panic mode needs to be disabled. > sudo firewall-cmd --panic-off
- RMF Control
- AC-18
- Severity
- Medium
- CCI
- CCI-001443
- Version
- SLES-15-010380
- Vuln IDs
-
- V-234847
- Rule IDs
-
- SV-234847r854193_rule
Checks: C-38035r618810_chk
Verify that the SUSE operating system has no wireless network adapters enabled. Check that there are no wireless interfaces configured on the system with the following command: > sudo wicked show all lo up link: #1, state up type: loopback config: compat:suse:/etc/sysconfig/network/ifcfg-lo leases: ipv4 static granted leases: ipv6 static granted addr: ipv4 127.0.0.1/8 [static] addr: ipv6 ::1/128 [static] eth0 up link: #2, state up, mtu 1500 type: ethernet, hwaddr 06:00:00:00:00:01 config: compat:suse:/etc/sysconfig/network/ifcfg-eth0 leases: ipv4 dhcp granted leases: ipv6 dhcp granted, ipv6 auto granted addr: ipv4 10.0.0.100/16 [dhcp] route: ipv4 default via 10.0.0.1 proto dhcp wlan0 up link: #3, state up, mtu 1500 type: wireless, hwaddr 06:00:00:00:00:02 config: wicked:xml:/etc/wicked/ifconfig/wlan0.xml leases: ipv4 dhcp granted addr: ipv4 10.0.0.101/16 [dhcp] route: ipv4 default via 10.0.0.1 proto dhcp If a wireless interface is configured, it must be documented and approved by the local AO. If a wireless interface is configured and has not been documented and approved, this is a finding.
Fix: F-37998r618811_fix
Configure the SUSE operating system to disable all wireless network interfaces with the following command: For each interface of type wireless, bring the interface into "down" state: > sudo wicked ifdown wlan0 For each interface of type wireless with a configuration type of "compat:suse:", remove the associated file: > sudo rm /etc/sysconfig/network/ifcfg-wlan0 For each interface of type wireless, for each configuration of type "wicked:xml:", remove the associated file or remove the interface configuration from the file. > sudo rm /etc/wicked/ifconfig/wlan0.xml
- RMF Control
- CM-7
- Severity
- Medium
- CCI
- CCI-001764
- Version
- SLES-15-010390
- Vuln IDs
-
- V-234848
- Rule IDs
-
- SV-234848r854194_rule
Checks: C-38036r618813_chk
Verify that the SUSE operating system AppArmor tool is configured to control whitelisted applications and user home directory access control. Check that "pam_apparmor" is installed on the system with the following command: > zypper info pam_apparmor | grep "Installed" If the package "pam_apparmor" is not installed on the system, this is a finding. Check that the "apparmor" daemon is running with the following command: > systemctl status apparmor.service | grep -i active Active: active (exited) since Fri 2017-01-13 01:01:01 GMT; 1day 1h ago If something other than "Active: active" is returned, this is a finding. Note: "pam_apparmor" must have properly configured profiles. All configurations will be based on the actual system setup and organization. See the "pam_apparmor" documentation for more information on configuring profiles.
Fix: F-37999r618814_fix
Configure the SUSE operating system to blacklist all applications by default and permit by whitelist. Install "pam_apparmor" (if it is not installed) with the following command: > sudo zypper in pam_apparmor Enable/activate "Apparmor" (if it is not already active) with the following command: > sudo systemctl enable apparmor.service Start "Apparmor" with the following command: > sudo systemctl start apparmor.service Note: "pam_apparmor" must have properly configured profiles. All configurations will be based on the actual system setup and organization. See the "pam_apparmor" documentation for more information on configuring profiles.
- RMF Control
- AU-8
- Severity
- Medium
- CCI
- CCI-001891
- Version
- SLES-15-010400
- Vuln IDs
-
- V-234849
- Rule IDs
-
- SV-234849r877038_rule
Checks: C-38037r618816_chk
The SUSE operating system clock must be configured to synchronize to an authoritative DoD time source when the time difference is greater than one second. Check that the SUSE operating system clock must be configured to synchronize to an authoritative DoD time source when the time difference is greater than one second with the following command: > sudo grep maxpoll /etc/chrony.conf server 0.us.pool.ntp.mil maxpoll 16 If nothing is returned, "maxpoll" is greater than "16", or is commented out, this is a finding. Verify the "chrony.conf" file is configured to an authoritative DoD time source by running the following command: > sudo grep -i server /etc/chrony.conf server 0.us.pool.ntp.mil If the parameter "server" is not set, is not set to an authoritative DoD time source, or is commented out, this is a finding.
Fix: F-38000r618817_fix
The SUSE operating system clock must be configured to synchronize to an authoritative DoD time source when the time difference is greater than one second. To configure the system clock to synchronize to an authoritative DoD time source at least every 24 hours, edit the file "/etc/chrony.conf". Add or correct the following lines by replacing "[time_source]" with an authoritative DoD time source: server [time_source] maxpoll 16
- RMF Control
- AU-8
- Severity
- Low
- CCI
- CCI-001890
- Version
- SLES-15-010410
- Vuln IDs
-
- V-234850
- Rule IDs
-
- SV-234850r877383_rule
Checks: C-38038r618819_chk
Verify the SUSE operating system is configured to use UTC or GMT. Check that the SUSE operating system is configured to use UTC or GMT with the following command: > timedatectl status | grep -i "time zone" Time zone: UTC (UTC, +0000) If "Time zone" is not set to "UTC" or "GMT", this is a finding.
Fix: F-38001r618820_fix
Configure the SUSE operating system is configured to use UTC or GMT. To configure the system time zone to use UTC or GMT, run the following command, replacing [ZONE] with "UTC" or "GMT". > sudo timedatectl set-timezone [ZONE]
- RMF Control
- CM-3
- Severity
- Medium
- CCI
- CCI-001744
- Version
- SLES-15-010420
- Vuln IDs
-
- V-234851
- Rule IDs
-
- SV-234851r902851_rule
Checks: C-38039r880946_chk
Verify the SUSE operating system checks the baseline configuration for unauthorized changes at least once weekly. Note: A file integrity tool other than AIDE may be used, but the tool must be executed at least once per week. Check for the presence of a cron job running daily or weekly on the system that executes AIDE to scan for changes to the system baseline. The command used in the following example looks at the daily cron job: Check the "/etc/cron" subdirectories for a "crontab" file controlling the execution of the file integrity application. For example, if AIDE is installed on the system, use the following command: > sudo grep -R aide /etc/crontab /etc/cron.* /etc/crontab: 30 04 * * * /etc/aide If the file integrity application does not exist, or a "crontab" file does not exist in "/etc/crontab", the "/etc/cron.daily" subdirectory, or "/etc/cron.weekly" subdirectory, this is a finding.
Fix: F-38002r902850_fix
Configure the SUSE operating system to check the baseline configuration for unauthorized changes at least once weekly. If the "aide" package is not installed, install it with the following command: > sudo zypper in aide Configure the file integrity tool to automatically run on the system at least weekly. The following example output is generic. It will set cron to run AIDE weekly, but other file integrity tools may be used: > cat /etc/cron.weekly/aide 0 0 * * * /usr/sbin/aide --check | /bin/mail -s "$HOSTNAME - Daily AIDE integrity check run" root@example_server_name.mil Note: Per requirement SLES-15-010418, the "mailx" package must be installed on the system to enable email functionality.
- RMF Control
- CM-5
- Severity
- High
- CCI
- CCI-001749
- Version
- SLES-15-010430
- Vuln IDs
-
- V-234852
- Rule IDs
-
- SV-234852r877463_rule
Checks: C-38040r618825_chk
Verify that the SUSE operating system tool zypper has gpgcheck enabled. Check that zypper has gpgcheck enabled with the following command: > grep -i '^gpgcheck' /etc/zypp/zypp.conf gpgcheck = 1 If "gpgcheck" is set to "0", "off", "no", or "false", this is a finding.
Fix: F-38003r618826_fix
Configure that the SUSE operating system tool zypper to enable gpgcheck by editing or adding the following line to "/etc/zypp/zypp.conf": gpgcheck = 1
- RMF Control
- IA-11
- Severity
- High
- CCI
- CCI-002038
- Version
- SLES-15-010450
- Vuln IDs
-
- V-234853
- Rule IDs
-
- SV-234853r854199_rule
Checks: C-38041r618828_chk
Verify that the SUSE operating system requires reauthentication when changing authenticators, roles, or escalating privileges. Check that "/etc/sudoers" has no occurrences of "NOPASSWD" or "!authenticate" with the following command: > sudo egrep -i '(nopasswd|!authenticate)' /etc/sudoers If any uncommented lines containing "!authenticate", or "NOPASSWD" are returned and active accounts on the system have valid passwords, this is a finding.
Fix: F-38004r618829_fix
Configure the SUSE operating system to remove any occurrence of "NOPASSWD" or "!authenticate" found in the "/etc/sudoers" file. If the system does not use passwords for authentication, the "NOPASSWD" tag may exist in the file.
- RMF Control
- IA-2
- Severity
- Medium
- CCI
- CCI-001948
- Version
- SLES-15-010460
- Vuln IDs
-
- V-234854
- Rule IDs
-
- SV-234854r854200_rule
Checks: C-38042r618831_chk
Verify the SUSE operating system has the packages required for multifactor authentication installed. Check for the presence of the packages required to support multifactor authentication with the following commands: > zypper info pam_pkcs11 | grep -i installed > zypper info mozilla-nss | grep -i installed > zypper info mozilla-nss-tools | grep -i installed > zypper info pcsc-ccid | grep -i installed > zypper info pcsc-lite | grep -i installed > zypper info pcsc-tools | grep -i installed > zypper info opensc | grep -i installed > zypper info coolkey | grep -i installed If any of the packages required for multifactor authentication are not installed, this is a finding.
Fix: F-38005r618832_fix
Configure the SUSE operating system to implement multifactor authentication by installing the required packages. Install the packages required to support multifactor authentication with the following commands: > zypper install pam_pkcs11 > zypper install mozilla-nss > zypper install mozilla-nss-tools > zypper install pcsc-ccid > zypper install pcsc-lite > zypper install pcsc-tools > zypper install opensc > zypper install coolkey Additional information on the configuration of multifactor authentication on the SUSE operating system can be found at https://www.suse.com/communities/blog/configuring-smart-card-authentication-suse-linux-enterprise/.
- RMF Control
- IA-2
- Severity
- Medium
- CCI
- CCI-001948
- Version
- SLES-15-010470
- Vuln IDs
-
- V-234855
- Rule IDs
-
- SV-234855r854201_rule
Checks: C-38043r618834_chk
Verify the SUSE operating system implements certificate status checking for multifactor authentication. Check that certificate status checking for multifactor authentication is implemented with the following command: > grep use_pkcs11_module /etc/pam_pkcs11/pam_pkcs11.conf | awk '/pkcs11_module coolkey {/,/}/' /etc/pam_pkcs11/pam_pkcs11.conf | grep cert_policy cert_policy = ca,ocsp_on,signature,crl_auto; If "cert_policy" is not set to include "ocsp", this is a finding.
Fix: F-38006r618835_fix
Configure the SUSE operating system to certificate status checking for PKI authentication. Modify all of the cert_policy lines in "/etc/pam_pkcs11/pam_pkcs11.conf" to include "ocsp_on". Note: OCSP allows sending request for certificate status information. Additional certificate validation polices are permitted. Additional information on the configuration of multifactor authentication on the SUSE operating system can be found at https://www.suse.com/communities/blog/configuring-smart-card-authentication-suse-linux-enterprise/.
- RMF Control
- IA-3
- Severity
- Medium
- CCI
- CCI-001958
- Version
- SLES-15-010480
- Vuln IDs
-
- V-234856
- Rule IDs
-
- SV-234856r854202_rule
Checks: C-38044r618837_chk
Verify the SUSE operating system does not automount USB mass storage devices when connected to the host. Check that "usb-storage" is blacklisted in the "/etc/modprobe.d/50-blacklist.conf" file with the following command: > grep usb-storage /etc/modprobe.d/50-blacklist.conf blacklist usb-storage If nothing is output from the command, this is a finding.
Fix: F-38007r618838_fix
Configure the SUSE operating system to prevent USB mass storage devices from automounting when connected to the host. Add or update the following line to the "/etc/modprobe.d/50-blacklist.conf" file: blacklist usb-storage
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-002007
- Version
- SLES-15-010490
- Vuln IDs
-
- V-234857
- Rule IDs
-
- SV-234857r854203_rule
Checks: C-38045r618840_chk
If NSS is not used on the operating system, this is Not Applicable. If NSS is used by the SUSE operating system, verify it prohibits the use of cached authentications after one day. Check that cached authentications cannot be used after one day with the following command: > sudo grep -i "memcache_timeout" /etc/sssd/sssd.conf memcache_timeout = 86400 If "memcache_timeout" has a value greater than "86400", or is missing, this is a finding.
Fix: F-38008r618841_fix
Configure NSS, if used by the SUSE operating system, to prohibit the use of cached authentications after one day. Add or change the following line in "/etc/sssd/sssd.conf" just below the line "[nss]": memcache_timeout = 86400
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-002007
- Version
- SLES-15-010500
- Vuln IDs
-
- V-234858
- Rule IDs
-
- SV-234858r854204_rule
Checks: C-38046r618843_chk
If SSSD is not being used on the operating system, this is Not Applicable. Verify that the SUSE operating system PAM prohibits the use of cached off line authentications after one day. Check that cached off line authentications cannot be used after one day with the following command: > sudo grep "offline_credentials_expiration" /etc/sssd/sssd.conf offline_credentials_expiration = 1 If "offline_credentials_expiration" is not set to a value of "1", this is a finding.
Fix: F-38009r618844_fix
Configure the SUSE operating system PAM to prohibit the use of cached authentications after one day. Add or change the following line in "/etc/sssd/sssd.conf" just below the line "[pam]": offline_credentials_expiration = 1
- RMF Control
- SC-13
- Severity
- High
- CCI
- CCI-002450
- Version
- SLES-15-010510
- Vuln IDs
-
- V-234859
- Rule IDs
-
- SV-234859r877380_rule
Checks: C-38047r618846_chk
Verify the SUSE operating system is running in FIPS mode by running the following command. > cat /proc/sys/crypto/fips_enabled 1 If nothing is returned, the file does not exist, or the value returned is "0", this is a finding.
Fix: F-38010r618847_fix
To configure the SUSE operating system to run in FIPS mode, add "fips=1" to the kernel parameter during the SUSE operating system install. Enabling FIPS mode on a preexisting system involves a number of modifications to the SUSE operating system. Refer to section 9.1, "Crypto Officer Guidance", of the following document for installation guidance: http://csrc.nist.gov/groups/STM/cmvp/documents/140-1/140sp/140sp2435.pdf
- RMF Control
- SC-8
- Severity
- High
- CCI
- CCI-002418
- Version
- SLES-15-010530
- Vuln IDs
-
- V-234860
- Rule IDs
-
- SV-234860r916422_rule
Checks: C-38048r618849_chk
Note: If the system is not networked, this requirement is Not Applicable. Verify that the SUSE operating system implements SSH to protect the confidentiality and integrity of transmitted and received information, as well as information during preparation for transmission. Check that the OpenSSH package is installed on the SUSE operating system with the following command: > zypper info openssh | grep -i installed If the OpenSSH package is not installed, this is a finding. Check that the OpenSSH service active on the SUSE operating system with the following command: > systemctl status sshd.service | grep -i "active:" Active: active (running) since Thu 2017-01-12 15:03:38 UTC; 1 months 4 days ago If OpenSSH service is not active, this is a finding.
Fix: F-38011r618850_fix
Note: If the system is not networked, this requirement is Not Applicable. Configure the SUSE operating system to implement SSH to protect the confidentiality and integrity of transmitted and received information, as well as information during preparation for transmission. Install the OpenSSH package on the SUSE operating system with the following command: > sudo zypper in openssh Enable the OpenSSH service to start automatically on reboot with the following command: > sudo systemctl enable sshd.service For the changes to take effect immediately, start the service with the following command: > sudo systemctl restart sshd.service
- RMF Control
- SI-16
- Severity
- Medium
- CCI
- CCI-002824
- Version
- SLES-15-010540
- Vuln IDs
-
- V-234861
- Rule IDs
-
- SV-234861r854207_rule
Checks: C-38049r618852_chk
Verify the SUSE operating system prevents leaking of internal kernel addresses. Check that the SUSE operating system prevents leaking of internal kernel addresses by running the following command: > sudo sysctl kernel.kptr_restrict kernel.kptr_restrict = 1 If the kernel parameter "kptr_restrict" is not equal to "1" or nothing is returned, this is a finding.
Fix: F-38012r618853_fix
Configure the SUSE operating system to prevent leaking of internal kernel addresses by running the following command: > sudo sysctl -w kernel.kptr_restrict=1 If "1" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "kernel.kptr_restrict=1" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- SI-16
- Severity
- Medium
- CCI
- CCI-002824
- Version
- SLES-15-010550
- Vuln IDs
-
- V-234862
- Rule IDs
-
- SV-234862r854208_rule
Checks: C-38050r618855_chk
Verify the SUSE operating system implements ASLR. Check that the SUSE operating system implements ASLR by running the following command: > sudo sysctl kernel.randomize_va_space Kernel.randomize_va_space = 2 If the kernel parameter "randomize_va_space" is not equal to "2" or nothing is returned, this is a finding.
Fix: F-38013r618856_fix
Configure the SUSE operating system to implement ASLR by running the following command as an administrator: > sudo sysctl -w kernel.randomize_va_space=2 If "2" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "kernel.randomize_va_space=2" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- SI-2
- Severity
- Medium
- CCI
- CCI-002617
- Version
- SLES-15-010560
- Vuln IDs
-
- V-234863
- Rule IDs
-
- SV-234863r854209_rule
Checks: C-38051r618858_chk
Verify the SUSE operating system removes all outdated software components after updated version have been installed by running the following command: > grep -i upgraderemovedroppedpackages /etc/zypp/zypp.conf solver.upgradeRemoveDroppedPackages = true If "solver.upgradeRemoveDroppedPackages" is commented out, is set to "false", or is missing completely, this is a finding.
Fix: F-38014r618859_fix
Configure the SUSE operating system to remove all outdated software components after an update by editing the following line in "/etc/zypp/zypp.conf" to match the one provided below: solver.upgradeRemoveDroppedPackages = true
- RMF Control
- SI-6
- Severity
- Medium
- CCI
- CCI-002702
- Version
- SLES-15-010570
- Vuln IDs
-
- V-234864
- Rule IDs
-
- SV-234864r902854_rule
Checks: C-38052r902852_chk
Verify the SUSE operating system notifies the SA when AIDE discovers anomalies in the operation of any security functions. Check to see if the aide cron job sends an email when executed with the following command: > grep -i "aide" /etc/cron.*/aide 0 0 * * * /usr/sbin/aide --check | /bin/mail -s "$HOSTNAME - Daily AIDE integrity check run" root@example_server_name.mil If the "aide" file does not exist under the "/etc/cron" directory structure or the cron job is not configured to execute a binary to send an email (such as "/bin/mail"), this is a finding.
Fix: F-38015r902853_fix
Configure the SUSE operating system to notify the SA when AIDE discovers anomalies in the operation of any security functions. Create the aide crontab file in "/etc/cron.daily" and add following command replacing the "[E-MAIL]" parameter with a proper email address for the SA: 0 0 * * * /usr/sbin/aide --check | /bin/mail -s "$HOSTNAME - Daily AIDE integrity check run" root@example_server_name.mil Note: Per requirement SLES-15-010418, the "mailx" package must be installed on the system to enable email functionality.
- RMF Control
- AU-4
- Severity
- Medium
- CCI
- CCI-001851
- Version
- SLES-15-010580
- Vuln IDs
-
- V-234865
- Rule IDs
-
- SV-234865r854211_rule
Checks: C-38053r618864_chk
Verify that the SUSE operating system must off-load rsyslog messages for networked systems in real time and off-load standalone systems at least weekly. For stand-alone hosts, verify with the System Administrator that the log files are off-loaded at least weekly. For networked systems, check that rsyslog is sending log messages to a remote server with the following command: > sudo grep "\*.\*" /etc/rsyslog.conf | grep "@" | grep -v "^#" *.*;mail.none;news.none @192.168.1.101:514 If any active message labels in the file do not have a line to send log messages to a remote server, this is a finding.
Fix: F-38016r618865_fix
Configure the SUSE operating system to off-load rsyslog messages for networked systems in real time. For stand-alone systems establish a procedure to off-load log messages at least once a week. For networked systems add a "@[Log_Server_IP_Address]" option to every active message label in "/etc/rsyslog.conf" that does not have one. Some examples are listed below: *.*;mail.none;news.none -/var/log/messages *.*;mail.none;news.none @192.168.1.101:514 An additional option is to capture all of the log messages and send them to a remote log host: *.* @@loghost:514
- RMF Control
- AC-2
- Severity
- Medium
- CCI
- CCI-000016
- Version
- SLES-15-020000
- Vuln IDs
-
- V-234866
- Rule IDs
-
- SV-234866r622137_rule
Checks: C-38054r618867_chk
Verify that the SUSE operating system provisions temporary accounts with an expiration date for "72" hours. Ask the System Administrator if any temporary accounts have been added to the system. For every existing temporary account, run the following command to obtain its account expiration information: > sudo chage -l system_account_name Verify each of these accounts has an expiration date that is within "72" hours of its creation. If any temporary accounts have no expiration date set or do not expire within "72" hours of their creation, this is a finding.
Fix: F-38017r618868_fix
In the event temporary accounts are required, configure the SUSE operating system to terminate them after "72" hours. For every temporary account, run the following command to set an expiration date on it, substituting "system_account_name" with the appropriate value: > sudo chage -E `date -d "+3 days" +%Y-%m-%d` system_account_name `date -d "+3 days" +%Y-%m-%d` sets the 72-hour expiration date for the account at the time the command is run.
- RMF Control
- AC-7
- Severity
- Medium
- CCI
- CCI-000044
- Version
- SLES-15-020010
- Vuln IDs
-
- V-234867
- Rule IDs
-
- SV-234867r854212_rule
Checks: C-38055r618870_chk
Verify the SUSE operating system locks a user account after three consecutive failed access attempts until the locked account is released by an administrator. Check that the system locks a user account after three consecutive failed login attempts using the following command: > grep pam_tally2.so /etc/pam.d/common-auth auth required pam_tally2.so onerr=fail deny=3 If no line is returned or the line is commented out, this is a finding. If the line is missing "onerr=fail", this is a finding. If the line has "deny" set to a value other than 1, 2, or 3, this is a finding. Check that the system resets the failed login attempts counter after a successful login using the following command: > grep pam_tally2.so /etc/pam.d/common-account account required pam_tally2.so If the account option is missing, or commented out, this is a finding.
Fix: F-38018r618871_fix
Configure the operating system to lock an account when three unsuccessful access attempts occur. Modify the first line of the auth section "/etc/pam.d/common-auth" file to match the following lines: auth required pam_tally2.so onerr=fail silent audit deny=3 Add or modify the following line in the /etc/pam.d/common-account file: account required pam_tally2.so Note: Manual changes to the listed files may be overwritten by the "pam-config" program. The "pam-config" program should not be used to update the configurations listed in this requirement.
- RMF Control
- AC-10
- Severity
- Low
- CCI
- CCI-000054
- Version
- SLES-15-020020
- Vuln IDs
-
- V-234868
- Rule IDs
-
- SV-234868r877399_rule
Checks: C-38056r618873_chk
Verify the SUSE operating system limits the number of concurrent sessions to 10 for all accounts and/or account types by running the following command: > grep "maxlogins" /etc/security/limits.conf The result must contain the following line: * hard maxlogins 10 If the "maxlogins" item is missing, the line does not begin with a star symbol, or the value is not set to "10" or less, this is a finding.
Fix: F-38019r618874_fix
Configure the SUSE operating system to limit the number of concurrent sessions to "10" or less for all accounts and/or account types. Add the following line to the file "/etc/security/limits.conf": * hard maxlogins 10
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000187
- Version
- SLES-15-020030
- Vuln IDs
-
- V-234869
- Rule IDs
-
- SV-234869r854213_rule
Checks: C-38057r618876_chk
Verify the SUSE operating system implements multifactor authentication for remote access to privileged accounts via PAM. Check that the "pam_pkcs11.so" option is configured in the "/etc/pam.d/common-auth" file with the following command: > grep pam_pkcs11.so /etc/pam.d/common-auth auth sufficient pam_pkcs11.so If "pam_pkcs11.so" is not set in "/etc/pam.d/common-auth", this is a finding.
Fix: F-38020r618877_fix
Configure the SUSE operating system to implement multifactor authentication for remote access to privileged accounts via PAM. Add or update "pam_pkcs11.so" in "/etc/pam.d/common-auth" to match the following line: auth sufficient pam_pkcs11.so
- RMF Control
- IA-2
- Severity
- Medium
- CCI
- CCI-000770
- Version
- SLES-15-020040
- Vuln IDs
-
- V-234870
- Rule IDs
-
- SV-234870r622137_rule
Checks: C-38058r618879_chk
Verify the SUSE operating system denies direct logons to the root account using remote access via SSH. Check that SSH denies any user trying to log on directly as root with the following command: > sudo grep -i permitrootlogin /etc/ssh/sshd_config PermitRootLogin no If the "PermitRootLogin" keyword is set to "yes", is missing, or is commented out, this is a finding.
Fix: F-38021r618880_fix
Configure the SUSE operating system to deny direct logons to the root account using remote access via SSH. Edit the appropriate "/etc/ssh/sshd_config" file, add or uncomment the line for "PermitRootLogin" and set its value to "no" (this file may be named differently or be in a different location): PermitRootLogin no
- RMF Control
- IA-4
- Severity
- Medium
- CCI
- CCI-000795
- Version
- SLES-15-020050
- Vuln IDs
-
- V-234871
- Rule IDs
-
- SV-234871r928531_rule
Checks: C-38059r928529_chk
Verify the SUSE operating system disables account identifiers after 35 days of inactivity since the password expiration. Check the account inactivity value by performing the following command: > sudo grep -i '^inactive' /etc/default/useradd INACTIVE=35 If no output is produced, or if "INACTIVE" is not set to a value greater than "0" and less than or equal to "35", this is a finding.
Fix: F-38022r928530_fix
Configure the SUSE operating system to disable account identifiers after 35 days of inactivity since the password expiration. Run the following command to change the configuration for "useradd" to disable the account identifier after 35 days: > sudo useradd -D -f 35 DOD recommendation is 35 days, but a lower value greater than "0" is acceptable.
- RMF Control
- AC-2
- Severity
- Medium
- CCI
- CCI-001682
- Version
- SLES-15-020060
- Vuln IDs
-
- V-234872
- Rule IDs
-
- SV-234872r622137_rule
Checks: C-38060r618885_chk
Verify the SUSE operating system is configured such that emergency administrator accounts are never automatically removed or disabled. Note: Root is typically the "account of last resort" on a system and is also used as the example emergency administrator account. If another account is being used as the emergency administrator account, the command should be used against that account. Check to see if the root account password or account expires with the following command: > sudo chage -l [Emergency_Administrator] Password expires:never If "Password expires" or "Account expires" is set to anything other than "never", this is a finding.
Fix: F-38023r618886_fix
Configure the SUSE operating system to never automatically remove or disable emergency administrator accounts. Replace "[Emergency_Administrator]" in the following command with the correct emergency administrator account. Run the following command as an administrator: > sudo chage -I -1 -M 99999 [Emergency_Administrator]
- RMF Control
- AC-9
- Severity
- Low
- CCI
- CCI-000052
- Version
- SLES-15-020080
- Vuln IDs
-
- V-234873
- Rule IDs
-
- SV-234873r858542_rule
Checks: C-38061r618888_chk
Verify the SUSE operating system users are provided with feedback on when account accesses last occurred. Check that "pam_lastlog" is used and not silent with the following command: > grep pam_lastlog /etc/pam.d/login session required pam_lastlog.so showfailed If "pam_lastlog" is missing from "/etc/pam.d/login" file, the "silent" option is present, or the returned line is commented out, this is a finding.
Fix: F-38024r618889_fix
Configure the SUSE operating system to provide users with feedback on when account accesses last occurred by setting the required configuration options in "/etc/pam.d/login". Add the following line to the top of "/etc/pam.d/login": session required pam_lastlog.so showfailed
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-020090
- Vuln IDs
-
- V-234874
- Rule IDs
-
- SV-234874r622137_rule
Checks: C-38062r618891_chk
Verify all SUSE operating system accounts are assigned to an active system, application, or user account. Obtain the list of authorized system accounts from the Information System Security Officer (ISSO). Check the system accounts on the system with the following command: > more /etc/passwd root:x:0:0:root:/root:/bin/bash ... games:x:12:100:Games account:/var/games:/bin/bash Accounts such as "games" and "gopher" are not authorized accounts as they do not support authorized system functions. If the accounts on the system do not match the provided documentation, this is a finding.
Fix: F-38025r618892_fix
Configure the SUSE operating system so all accounts on the system are assigned to an active system, application, or user account. Remove accounts that do not support approved system activities or that allow for a normal user to perform administrative-level actions. Document all authorized accounts on the system.
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-020091
- Vuln IDs
-
- V-234875
- Rule IDs
-
- SV-234875r622137_rule
Checks: C-38063r618894_chk
Verify all non-interactive SUSE operating system accounts do not have an interactive shell assigned to them. Obtain the list of authorized system accounts from the Information System Security Officer (ISSO). Check the system accounts on the system with the following command: > awk -F: '($7 !~ "/sbin/nologin" && $7 !~ "/bin/false"){print $1 ":" $3 ":" $7}' /etc/passwd root:0:/bin/bash nobody:65534:/bin/bash If a non-interactive accounts such as "games" or "nobody" is listed with an interactive shell, this is a finding.
Fix: F-38026r618895_fix
Configure the SUSE operating system so that all non-interactive accounts on the system have no interactive shell assigned to them. Run the following command to disable the interactive shell for a specific non-interactive user account: > sudo usermod --shell /sbin/nologin nobody
- RMF Control
- CM-6
- Severity
- High
- CCI
- CCI-000366
- Version
- SLES-15-020100
- Vuln IDs
-
- V-234876
- Rule IDs
-
- SV-234876r622137_rule
Checks: C-38064r618897_chk
Verify that the SUSE operating system root account is the only account with unrestricted access to the system. Check the system for duplicate UID "0" assignments with the following command: > awk -F: '$3 == 0 {print $1}' /etc/passwd root If any accounts other than root have a UID of "0", this is a finding.
Fix: F-38027r618898_fix
Change the UID of any account on the SUSE operating system, other than the root account, that has a UID of "0". If the account is associated with system commands or applications, the UID should be changed to one greater than "0" but less than "1000". Otherwise, assign a UID of greater than "1000" that has not already been assigned.
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-020101
- Vuln IDs
-
- V-234877
- Rule IDs
-
- SV-234877r622137_rule
Checks: C-38065r618900_chk
Verify the "sudoers" file restricts sudo access to authorized personnel. > sudo grep -iw 'ALL' /etc/sudoers /etc/sudoers.d/* If the either of the following entries are returned, this is a finding: ALL ALL=(ALL) ALL ALL ALL=(ALL:ALL) ALL
Fix: F-38028r618901_fix
Remove the following entries from the sudoers file: ALL ALL=(ALL) ALL ALL ALL=(ALL:ALL) ALL
- RMF Control
- IA-11
- Severity
- Medium
- CCI
- CCI-002038
- Version
- SLES-15-020102
- Vuln IDs
-
- V-234878
- Rule IDs
-
- SV-234878r861108_rule
Checks: C-38066r861107_chk
Verify the operating system requires re-authentication when using the "sudo" command to elevate privileges. > sudo grep -ir 'timestamp_timeout' /etc/sudoers /etc/sudoers.d /etc/sudoers:Defaults timestamp_timeout=0 If conflicting results are returned, this is a finding. If "timestamp_timeout" is set to a negative number, is commented out, or no results are returned, this is a finding.
Fix: F-38029r618904_fix
Configure the "sudo" command to require re-authentication. Edit the /etc/sudoers file: > sudo visudo Add or modify the following line: Defaults timestamp_timeout=[value] Note: The "[value]" must be a number that is greater than or equal to "0".
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-020103
- Vuln IDs
-
- V-234879
- Rule IDs
-
- SV-234879r833010_rule
Checks: C-38067r833009_chk
Verify that the sudoers security policy is configured to use the invoking user's password for privilege escalation. > sudo egrep -ir '(rootpw|targetpw|runaspw)' /etc/sudoers /etc/sudoers.d* | grep -v '#' /etc/sudoers:Defaults !targetpw /etc/sudoers:Defaults !rootpw /etc/sudoers:Defaults !runaspw If conflicting results are returned, this is a finding. If "Defaults !targetpw" is not defined, this is a finding. If "Defaults !rootpw" is not defined, this is a finding. If "Defaults !runaspw" is not defined, this is a finding.
Fix: F-38030r618907_fix
Define the following in the Defaults section of the /etc/sudoers file or a configuration file in the /etc/sudoers.d/ directory: Defaults !targetpw Defaults !rootpw Defaults !runaspw
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-020110
- Vuln IDs
-
- V-234880
- Rule IDs
-
- SV-234880r622137_rule
Checks: C-38068r618909_chk
Verify all SUSE operating system local interactive users on the system are assigned a home directory upon creation. Check to see if the system is configured to create home directories for local interactive users with the following command: > grep -i create_home /etc/login.defs CREATE_HOME yes If the value for "CREATE_HOME" parameter is not set to "yes", the line is missing, or the line is commented out, this is a finding.
Fix: F-38031r618910_fix
Configure the SUSE operating system to assign home directories to all new local interactive users by setting the "CREATE_HOME" parameter in "/etc/login.defs" to "yes" as follows. CREATE_HOME yes
- RMF Control
- AC-9
- Severity
- Medium
- CCI
- CCI-000052
- Version
- SLES-15-020120
- Vuln IDs
-
- V-234881
- Rule IDs
-
- SV-234881r858543_rule
Checks: C-38069r618912_chk
Verify all remote connections via SSH to the SUSE operating system display feedback on when account accesses last occurred. Check that "PrintLastLog" keyword in the sshd daemon configuration file is used and set to "yes" with the following command: > sudo grep -i printlastlog /etc/ssh/sshd_config PrintLastLog yes If the "PrintLastLog" keyword is set to "no", is missing, or is commented out, this is a finding.
Fix: F-38032r618913_fix
Configure the SUSE operating system to provide users with feedback on when account accesses last occurred. Add or edit the following lines in the "/etc/ssh/sshd_config" file: PrintLastLog yes
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000192
- Version
- SLES-15-020130
- Vuln IDs
-
- V-234882
- Rule IDs
-
- SV-234882r622137_rule
Checks: C-38070r618915_chk
Verify the SUSE operating system enforces password complexity by requiring at least one uppercase character. Check that the operating system enforces password complexity by requiring that at least one uppercase character be used by using the following command: > grep pam_cracklib.so /etc/pam.d/common-password password requisite pam_cracklib.so ucredit=-1 If the command does not return anything, the returned line is commented out, or has a second column value different from "requisite", or does not contain "ucredit=-1", this is a finding.
Fix: F-38033r618916_fix
Configure the SUSE operating system to enforce password complexity by requiring at least one uppercase character. Edit "/etc/pam.d/common-password" and edit the line containing "pam_cracklib.so" to contain the option "ucredit=-1" after the third column.
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000193
- Version
- SLES-15-020140
- Vuln IDs
-
- V-234883
- Rule IDs
-
- SV-234883r622137_rule
Checks: C-38071r618918_chk
Verify the SUSE operating system enforces password complexity by requiring that at least one lowercase character. Check that the operating system enforces password complexity by requiring that at least one lowercase character be used by using the following command: > grep pam_cracklib.so /etc/pam.d/common-password password requisite pam_cracklib.so lcredit=-1 If the command does not return anything, the returned line is commented out, or has a second column value different from "requisite", or does not contain "lcredit=-1", this is a finding.
Fix: F-38034r618919_fix
Configure the SUSE operating system to enforce password complexity by requiring at least one lowercase character. Edit "/etc/pam.d/common-password" and edit the line containing "pam_cracklib.so" to contain the option "lcredit=-1" after the third column.
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000194
- Version
- SLES-15-020150
- Vuln IDs
-
- V-234884
- Rule IDs
-
- SV-234884r622137_rule
Checks: C-38072r618921_chk
Verify the SUSE operating system enforces password complexity by requiring that at least one numeric character. Check that the operating system enforces password complexity by requiring that at least one numeric character be used by using the following command: > grep pam_cracklib.so /etc/pam.d/common-password password requisite pam_cracklib.so dcredit=-1 If the command does not return anything, the returned line is commented out, or has a second column value different from "requisite", or does not contain "dcredit=-1", this is a finding.
Fix: F-38035r618922_fix
Configure the SUSE operating system to enforce password complexity by requiring at least one numeric character. Edit "/etc/pam.d/common-password" and edit the line containing "pam_cracklib.so" to contain the option "dcredit=-1" after the third column.
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000195
- Version
- SLES-15-020160
- Vuln IDs
-
- V-234885
- Rule IDs
-
- SV-234885r622137_rule
Checks: C-38073r618924_chk
Verify the SUSE operating system requires at least eight characters be changed between the old and new passwords during a password change. Check that the operating system requires at least eight characters be changed between the old and new passwords during a password change by running the following command: > grep pam_cracklib.so /etc/pam.d/common-password password requisite pam_cracklib.so difok=8 If the command does not return anything, the returned line is commented out, or has a second column value different from "requisite", or does not contain "difok", or the value is less than "8", this is a finding.
Fix: F-38036r618925_fix
Configure the SUSE operating system to require at least eight characters be changed between the old and new passwords during a password change with the following command: Edit "/etc/pam.d/common-password" and edit the line containing "pam_cracklib.so" to contain the option "difok=8" after the third column.
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000196
- Version
- SLES-15-020170
- Vuln IDs
-
- V-234886
- Rule IDs
-
- SV-234886r877397_rule
Checks: C-38074r618927_chk
Verify the SUSE operating system configures the Linux PAM to only store encrypted representations of passwords. All account passwords must be hashed with SHA512 encryption strength. Check that PAM is configured to create SHA512 hashed passwords by running the following command: > grep pam_unix.so /etc/pam.d/common-password password required pam_unix.so sha512 If the command does not return anything or the returned line is commented out, has a second column value different from "required", or does not contain "sha512", this is a finding.
Fix: F-38037r618928_fix
Configure the SUSE operating system Linux PAM to only store encrypted representations of passwords. All account passwords must be hashed with SHA512 encryption strength. Edit "/etc/pam.d/common-password" and edit the line containing "pam_unix.so" to contain the SHA512 keyword after third column. Remove the "nullok" option.
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000196
- Version
- SLES-15-020180
- Vuln IDs
-
- V-234887
- Rule IDs
-
- SV-234887r877397_rule
Checks: C-38075r618930_chk
Verify the SUSE operating system requires the shadow password suite configuration be set to encrypt interactive user passwords using a strong cryptographic hash. Check that the interactive user account passwords are using a strong password hash with the following command: > sudo cut -d: -f2 /etc/shadow $6$kcOnRq/5$NUEYPuyL.wghQwWssXRcLRFiiru7f5JPV6GaJhNC2aK5F3PZpE/BCCtwrxRc/AInKMNX3CdMw11m9STiql12f/ Password hashes "!" or "*" indicate inactive accounts not available for logon and are not evaluated. If any interactive user password hash does not begin with "$6", this is a finding.
Fix: F-38038r618931_fix
Configure the SUSE operating system to encrypt all stored passwords with a strong cryptographic hash. Edit/modify the following line in the "/etc/login.defs" file and set "ENCRYPT_METHOD" to have a value of "SHA512". ENCRYPT_METHOD SHA512 Lock all interactive user accounts not using SHA512 hashing until the passwords can be regenerated.
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000196
- Version
- SLES-15-020190
- Vuln IDs
-
- V-234888
- Rule IDs
-
- SV-234888r877397_rule
Checks: C-38076r618933_chk
Verify the SUSE operating system configures the shadow password suite configuration to encrypt passwords using a strong cryptographic hash. Check that a minimum number of hash rounds is configured by running the following command: > egrep "^SHA_CRYPT_" /etc/login.defs If only one of "SHA_CRYPT_MIN_ROUNDS" or "SHA_CRYPT_MAX_ROUNDS" is set, and this value is below "5000", this is a finding. If both "SHA_CRYPT_MIN_ROUNDS" and "SHA_CRYPT_MAX_ROUNDS" are set, and the highest value for either is below "5000", this is a finding.
Fix: F-38039r618934_fix
Configure the SUSE operating system to encrypt all stored passwords with a strong cryptographic hash. Edit/modify the following line in the "/etc/login.defs" file and set "SHA_CRYPT_MIN_ROUNDS" to a value no lower than "5000": SHA_CRYPT_MIN_ROUNDS 5000
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000198
- Version
- SLES-15-020200
- Vuln IDs
-
- V-234889
- Rule IDs
-
- SV-234889r622137_rule
Checks: C-38077r618936_chk
Verify the SUSE operating system creates or updates passwords with minimum password age of one day or greater. To check that the SUSE operating system enforces 24 hours/one day as the minimum password age, run the following command: > grep '^PASS_MIN_DAYS' /etc/login.defs PASS_MIN_DAYS 1 If no output is produced, or if "PASS_MIN_DAYS" does not have a value of "1" or greater, this is a finding.
Fix: F-38040r618937_fix
Configure the SUSE operating system to enforce 24 hours/one day or greater as the minimum password age. Edit the file "/etc/login.defs" and add or correct the following line. Replace [DAYS] with the appropriate amount of days: PASS_MIN_DAYS [DAYS] The DoD requirement is "1" but a greater value is acceptable.
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000198
- Version
- SLES-15-020210
- Vuln IDs
-
- V-234890
- Rule IDs
-
- SV-234890r622137_rule
Checks: C-38078r618939_chk
Verify the SUSE operating system enforces a minimum time period between password changes for each user account of one day or greater. Check the minimum time period between password changes for each user account with the following command: > sudo awk -F: '$4 < 1 {print $1 ":" $4}' /etc/shadow smithj:1 If any results are returned that are not associated with a system account, this is a finding.
Fix: F-38041r618940_fix
Configure the SUSE operating system to enforce 24 hours/one day or greater as the minimum password age for user accounts. Change the minimum time period between password changes for each [USER] account to "1" day with the command, replacing [USER] with the user account that must be changed: > sudo passwd -n 1 [USER]
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000199
- Version
- SLES-15-020220
- Vuln IDs
-
- V-234891
- Rule IDs
-
- SV-234891r622137_rule
Checks: C-38079r618942_chk
Verify that the SUSE operating system is configured to create or update passwords with a maximum password age of 60 days or less. Check that the SUSE operating system enforces 60 days or less as the maximum password age with the following command: > grep '^PASS_MAX_DAYS' /etc/login.defs The DoD requirement is "60" days or less (greater than zero, as zero days will lock the account immediately). If no output is produced, or if "PASS_MAX_DAYS" is not set to "60" days or less, this is a finding.
Fix: F-38042r618943_fix
Configure the SUSE operating system to enforce a maximum password age of 60 days or less. Edit the file "/etc/login.defs" and add or correct the following line. Replace [DAYS] with the appropriate amount of days: PASS_MAX_DAYS [DAYS] The DoD requirement is 60 days or less (greater than zero, as zero days will lock the account immediately).
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000199
- Version
- SLES-15-020230
- Vuln IDs
-
- V-234892
- Rule IDs
-
- SV-234892r622137_rule
Checks: C-38080r618945_chk
Verify that the SUSE operating system enforces a maximum user password age of 60 days or less. Check that the SUSE operating system enforces 60 days or less as the maximum user password age with the following command: > sudo awk -F: '$5 > 60 || $5 == "" {print $1 ":" $5}' /etc/shadow If any results are returned that are not associated with a system account, this is a finding.
Fix: F-38043r618946_fix
Configure the SUSE operating system to enforce a maximum password age of each [USER] account to 60 days. The command in the check text will give a list of users that need to be updated to be in compliance: > sudo passwd -x 60 [USER] The DoD requirement is 60 days.
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000200
- Version
- SLES-15-020240
- Vuln IDs
-
- V-234893
- Rule IDs
-
- SV-234893r622137_rule
Checks: C-38081r618948_chk
Verify the password history file exists on the SUSE operating system. Check that the password history file exists with the following command: > ls -al /etc/security/opasswd -rw------- 1 root root 7 Dec 13 17:21 /etc/security/opasswd If "/etc/security/opasswd" does not exist, this is a finding.
Fix: F-38044r618949_fix
Configure the SUSE operating system to create the password history file with the following commands: > sudo touch /etc/security/opasswd > sudo chown root:root /etc/security/opasswd > sudo chmod 0600 /etc/security/opasswd
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000200
- Version
- SLES-15-020250
- Vuln IDs
-
- V-234894
- Rule IDs
-
- SV-234894r622137_rule
Checks: C-38082r618951_chk
Verify the SUSE operating system prohibits the reuse of a password for a minimum of five generations. Check that the SUSE operating system prohibits the reuse of a password for a minimum of five generations with the following command: > grep pam_pwhistory.so /etc/pam.d/common-password password requisite pam_pwhistory.so remember=5 use_authtok If the command does not return a result, or the returned line is commented out, has a second column value different from "requisite", does not contain "remember" value, the value is less than "5", or is missing the "use_authtok" keyword, this is a finding.
Fix: F-38045r618952_fix
Configure the SUSE operating system password history to prohibit the reuse of a password for a minimum of five generations. Edit "/etc/pam.d/common-password" and edit the line containing "pam_pwhistory.so" to contain the option "remember=5 use_authtok" after the third column.
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-000205
- Version
- SLES-15-020260
- Vuln IDs
-
- V-234895
- Rule IDs
-
- SV-234895r622137_rule
Checks: C-38083r618954_chk
Verify the SUSE operating system enforces a minimum 15-character password length. Check that the operating system enforces a minimum 15-character password length with the following command: > grep pam_cracklib.so /etc/pam.d/common-password password requisite pam_cracklib.so minlen=15 If the command does not return anything, the returned line is commented out, or has a second column value different from "requisite", or does not contain "minlen" value, or the value is less than "15", this is a finding.
Fix: F-38046r618955_fix
Configure the SUSE operating system to enforce a minimum 15-character password length. Edit "/etc/pam.d/common-password" and edit the line containing "pam_cracklib.so" to contain the option "minlen=15" after the third column. The DoD standard requires a minimum 15-character password length.
- RMF Control
- IA-5
- Severity
- Medium
- CCI
- CCI-001619
- Version
- SLES-15-020270
- Vuln IDs
-
- V-234896
- Rule IDs
-
- SV-234896r622137_rule
Checks: C-38084r618957_chk
Verify the SUSE operating system enforces password complexity by requiring at least one special character. Check that the operating system enforces password complexity by requiring at least one special character using the following command: > grep pam_cracklib.so /etc/pam.d/common-password password requisite pam_cracklib.so ocredit=-1 If the command does not return anything, the returned line is commented out, or has a second column value different from "requisite", or does not contain "ocredit=-1", this is a finding.
Fix: F-38047r618958_fix
Configure the SUSE operating system to enforce password complexity by requiring at least one special character. Edit "/etc/pam.d/common-password" and edit the line containing "pam_cracklib.so" to contain the option "ocredit=-1" after the third column.
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-020290
- Vuln IDs
-
- V-234897
- Rule IDs
-
- SV-234897r622137_rule
Checks: C-38085r618960_chk
Verify the SUSE operating system prevents the use of dictionary words for passwords. Check that the SUSE operating system prevents the use of dictionary words for passwords with the following command: > grep pam_cracklib.so /etc/pam.d/common-password password requisite pam_cracklib.so If the command does not return anything, or the returned line is commented out, this is a finding.
Fix: F-38048r618961_fix
Configure the SUSE operating system to prevent the use of dictionary words for passwords. Edit "/etc/pam.d/common-password" and add the following line: password requisite pam_cracklib.so
- RMF Control
- CM-6
- Severity
- High
- CCI
- CCI-000366
- Version
- SLES-15-020300
- Vuln IDs
-
- V-234898
- Rule IDs
-
- SV-234898r622137_rule
Checks: C-38086r618963_chk
Verify the SUSE operating system is not configured to allow blank or null passwords. Check that blank or null passwords cannot be used by running the following command: > grep pam_unix.so /etc/pam.d/* | grep nullok If this produces any output, it may be possible to log on with accounts with empty passwords. If null passwords can be used, this is a finding.
Fix: F-38049r618964_fix
Configure the SUSE operating system to not allow blank or null passwords. Remove any instances of the "nullok" option in "/etc/pam.d/common-auth" and "/etc/pam.d/common-password" to prevent logons with empty passwords.
- RMF Control
- AC-2
- Severity
- Medium
- CCI
- CCI-000018
- Version
- SLES-15-030000
- Vuln IDs
-
- V-234899
- Rule IDs
-
- SV-234899r854216_rule
Checks: C-38087r618966_chk
Verify the SUSE operating system generates an audit record when all modifications occur to the "/etc/passwd" file. Check that the file is being audited by performing the following command: > sudo auditctl -l | grep -w '/etc/passwd' -w /etc/passwd -p wa -k account_mod If the command does not return a line, this is a finding. Notes: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38050r618967_fix
Configure the SUSE operating system to generate an audit record when all modifications to the "/etc/passwd" file occur. Add or update the following rule to "/etc/audit/rules.d/audit.rules": -w /etc/passwd -p wa -k account_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AC-2
- Severity
- Medium
- CCI
- CCI-000018
- Version
- SLES-15-030010
- Vuln IDs
-
- V-234900
- Rule IDs
-
- SV-234900r854217_rule
Checks: C-38088r618969_chk
Verify the SUSE operating system generates an audit record when modifications occur to the "/etc/group" file. Check that the file is being audited by performing the following command: > sudo auditctl -l | grep -w '/etc/group' -w /etc/group -p wa -k account_mod If the command does not return a line, this is a finding. Notes: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38051r618970_fix
Configure the SUSE operating system to generate an audit record when all modifications to the "/etc/group" file occur. Add or update the following rule to "/etc/audit/rules.d/audit.rules": -w /etc/group -p wa -k account_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AC-2
- Severity
- Medium
- CCI
- CCI-000018
- Version
- SLES-15-030020
- Vuln IDs
-
- V-234901
- Rule IDs
-
- SV-234901r854218_rule
Checks: C-38089r618972_chk
Verify the SUSE operating system generates an audit record when modifications occur to the "/etc/shadow" file. Check that the file is being audited by performing the following command: > sudo auditctl -l | grep -w '/etc/shadow' -w /etc/shadow -p wa -k account_mod If the command does not return a line, this is a finding. Notes: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38052r618973_fix
Configure the SUSE operating system to generate an audit record when all modifications to the "/etc/shadow" file occur. Add or update the following rule to "/etc/audit/rules.d/audit.rules": -w /etc/shadow -p wa -k account_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AC-2
- Severity
- Medium
- CCI
- CCI-000018
- Version
- SLES-15-030030
- Vuln IDs
-
- V-234902
- Rule IDs
-
- SV-234902r854219_rule
Checks: C-38090r618975_chk
Verify the SUSE operating system generates an audit record when modifications occur to the "/etc/security/opasswd" file. Check that the file is being audited by performing the following command: > sudo auditctl -l | grep -w '/etc/security/opasswd' -w /etc/security/opasswd -p wa -k account_mod If the command does not return a line, this is a finding. Notes: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38053r618976_fix
Configure the SUSE operating system to generate an audit record when all modifications to the "/etc/security/opasswd" file occur. Add or update the following rule to "/etc/audit/rules.d/audit.rules": -w /etc/security/opasswd -p wa -k account_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AC-2
- Severity
- Medium
- CCI
- CCI-000018
- Version
- SLES-15-030040
- Vuln IDs
-
- V-234903
- Rule IDs
-
- SV-234903r854220_rule
Checks: C-38091r618978_chk
Verify the SUSE operating system generates an audit record when all modifications occur to the "/etc/gshadow" file. Check that the file is being audited by performing the following command: > sudo auditctl -l | grep -w '/etc/gshadow' -w /etc/gshadow -p wa -k account_mod If the command does not return a line, this is a finding. Notes: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38054r618979_fix
Configure the SUSE operating system to generate an audit record when all modifications to the "/etc/gshadow" file occur. Add or update the following rule to "/etc/audit/rules.d/audit.rules": -w /etc/gshadow -p wa -k account_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030050
- Vuln IDs
-
- V-234904
- Rule IDs
-
- SV-234904r854221_rule
Checks: C-38092r618981_chk
Verify the SUSE operating system produces audit records. Check that the SUSE operating system produces audit records by running the following command to determine the current status of the auditd service: > systemctl is-active auditd.service active > systemctl is-enabled auditd.service enabled If the service is not active or not enabled, this is a finding.
Fix: F-38055r618982_fix
Enable the SUSE operating system auditd service by performing the following commands: > sudo systemctl enable auditd.service > sudo systemctl start auditd.service
- RMF Control
- AU-3
- Severity
- Low
- CCI
- CCI-000130
- Version
- SLES-15-030060
- Vuln IDs
-
- V-234905
- Rule IDs
-
- SV-234905r854222_rule
Checks: C-38093r618984_chk
Verify the SUSE operating system generates an audit record for all uses of the "ssh-keysign" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/lib/ssh/ssh-keysign' -a always,exit -S all -F path=/usr/lib/ssh/ssh-keysign -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-ssh-keysign If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38056r618985_fix
Configure the SUSE operating system to generate an audit record for all uses of the "ssh-keysign" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/lib/ssh/ssh-keysign -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-ssh-keysign To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030070
- Vuln IDs
-
- V-234906
- Rule IDs
-
- SV-234906r854223_rule
Checks: C-38094r618987_chk
Verify the SUSE operating system generates an audit record for all uses of the "passwd" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/passwd' -a always,exit -S all -F path=/usr/bin/passwd -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-passwd If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38057r618988_fix
Configure the SUSE operating system to generate an audit record for all uses of the "passwd" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/passwd -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-passwd To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Low
- CCI
- CCI-000130
- Version
- SLES-15-030080
- Vuln IDs
-
- V-234907
- Rule IDs
-
- SV-234907r854224_rule
Checks: C-38095r618990_chk
Verify the SUSE operating system generates an audit record for all uses of the "gpasswd" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/gpasswd' -a always,exit -S all -F path=/usr/bin/gpasswd -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-gpasswd If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38058r618991_fix
Configure the SUSE operating system to generate an audit record for all uses of the "gpasswd" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/gpasswd -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-gpasswd To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Low
- CCI
- CCI-000130
- Version
- SLES-15-030090
- Vuln IDs
-
- V-234908
- Rule IDs
-
- SV-234908r854225_rule
Checks: C-38096r618993_chk
Verify the SUSE operating system generates an audit record for all uses of the "newgrp" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/newgrp' -a always,exit -S all -F path=/usr/bin/newgrp -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-newgrp If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38059r618994_fix
Configure the SUSE operating system to generate an audit record for all uses of the "newgrp" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/newgrp -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-newgrp To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Low
- CCI
- CCI-000130
- Version
- SLES-15-030100
- Vuln IDs
-
- V-234909
- Rule IDs
-
- SV-234909r854226_rule
Checks: C-38097r618996_chk
Verify the SUSE operating system generates an audit record for all uses of the "chsh" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/chsh' -a always,exit -S all -F path=/usr/bin/chsh -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-chsh If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38060r618997_fix
Configure the SUSE operating system to generate an audit record for all uses of the "chsh" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/chsh -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-chsh To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030110
- Vuln IDs
-
- V-234910
- Rule IDs
-
- SV-234910r854227_rule
Checks: C-38098r618999_chk
Verify the SUSE operating system generates an audit record for any use of the "unix_chkpwd" or "unix2_chkpwd" commands. Check that the commands are being audited by performing the following command: > sudo auditctl -l | egrep -w "(unix_chkpwd|unix2_chkpwd)" -a always,exit -S all -F path=/sbin/unix_chkpwd -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-unix-chkpwd -a always,exit -S all -F path=/sbin/unix2_chkpwd -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-unix2-chkpwd If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38061r619000_fix
Configure the SUSE operating system to generate an audit record for all uses of the "unix_chkpwd" and "unix2_chkpwd" commands. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/sbin/unix_chkpwd -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-unix-chkpwd -a always,exit -F path=/sbin/unix2_chkpwd -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-unix2-chkpwd To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030120
- Vuln IDs
-
- V-234911
- Rule IDs
-
- SV-234911r854228_rule
Checks: C-38099r619002_chk
Verify the SUSE operating system generates an audit record for any use of the "chage" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/chage' -a always,exit -S all -F path=/usr/bin/chage -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-chage If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38062r619003_fix
Configure the SUSE operating system to generate an audit record for all uses of the "chage" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/chage -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-chage To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030130
- Vuln IDs
-
- V-234912
- Rule IDs
-
- SV-234912r854229_rule
Checks: C-38100r619005_chk
Verify the SUSE operating system generates an audit record for any use of the "crontab" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/crontab' -a always,exit -S all -F path=/usr/bin/crontab -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-crontab If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38063r619006_fix
Configure the SUSE operating system to generate an audit record for all uses of the "crontab" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/crontab -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-crontab To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030140
- Vuln IDs
-
- V-234913
- Rule IDs
-
- SV-234913r854230_rule
Checks: C-38101r619008_chk
Verify the operating system generates audit records when successful/unsuccessful attempts to access the "/etc/sudoers" file and files in the "/etc/sudoers.d/" directory. Check that the file and directory is being audited by performing the following command: > sudo auditctl -l | grep -w '/etc/sudoers' -w /etc/sudoers -p wa -k privileged-actions -w /etc/sudoers.d -p wa -k privileged-actions If the commands do not return output that match the examples, this is a finding. Notes: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38064r619009_fix
Configure the SUSE operating system to generate audit records when successful/unsuccessful attempts to access the "/etc/sudoers" file and files in the "/etc/sudoers.d/" directory. Add or update the following rule in "/etc/audit/rules.d/audit.rules": -w /etc/sudoers -p wa -k privileged-actions -w /etc/sudoers.d -p wa -k privileged-actions To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030150
- Vuln IDs
-
- V-234914
- Rule IDs
-
- SV-234914r854232_rule
Checks: C-38102r809461_chk
Verify the SUSE operating system generates an audit record for all uses of the "creat", "open", "openat", "open_by_handle_at", "truncate", and "ftruncate" system calls. Check that the system calls are being audited by performing the following command: > sudo auditctl -l | grep 'open\|truncate\|creat' -a always,exit -F arch=b32 -S creat,open,openat,open_by_handle_at,truncate,ftruncate -F exit=-EPERM -F auid>=1000 -F auid!=-1 -k perm_access -a always,exit -F arch=b64 -S creat,open,openat,open_by_handle_at,truncate,ftruncate -F exit=-EPERM -F auid>=1000 -F auid!=-1 -k perm_access -a always,exit -F arch=b32 -S creat,open,openat,open_by_handle_at,truncate,ftruncate -F exit=-EACCES -F auid>=1000 -F auid!=-1 -k perm_access -a always,exit -F arch=b64 -S creat,open,openat,open_by_handle_at,truncate,ftruncate -F exit=-EACCES -F auid>=1000 -F auid!=-1 -k perm_access If both the "b32" and "b64" audit rules are not defined for the "creat", "open", "openat", "open_by_handle_at", "truncate", and "ftruncate" syscalls, this is a finding. If the output does not produce rules containing "-F exit=-EPERM", this is a finding. If the output does not produce rules containing "-F exit=-EACCES", this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38065r854231_fix
Configure the SUSE operating system to generate an audit record for all uses of the "creat", "open", "openat", "open_by_handle_at", "truncate", and "ftruncate" system calls. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -a always,exit -F arch=b32 -S creat,open,openat,open_by_handle_at,truncate,ftruncate -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access -a always,exit -F arch=b64 -S creat,open,openat,open_by_handle_at,truncate,ftruncate -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k perm_access -a always,exit -F arch=b32 -S creat,open,openat,open_by_handle_at,truncate,ftruncate -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access -a always,exit -F arch=b64 -S creat,open,openat,open_by_handle_at,truncate,ftruncate -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k perm_access To reload the rules file, restart the audit daemon: > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030190
- Vuln IDs
-
- V-234918
- Rule IDs
-
- SV-234918r854234_rule
Checks: C-38106r809464_chk
Verify the SUSE operating system generates an audit record for all uses of the "setxattr", "fsetxattr", "lsetxattr", "removexattr", "fremovexattr", and "lremovexattr" system calls. Check that the system calls are being audited by performing the following command: > sudo auditctl -l | grep xattr -a always,exit -F arch=b32 -S setxattr,fsetxattr,lsetxattr,removexattr,fremovexattr,lremovexattr -F auid>=1000 -F auid!=-1 -k perm_mod -a always,exit -F arch=b64 -S setxattr,fsetxattr,lsetxattr,removexattr,fremovexattr,lremovexattr -F auid>=1000 -F auid!=-1 -k perm_mod If both the "b32" and "b64" audit rules are not defined for the "setxattr", "fsetxattr", "lsetxattr", "removexattr", "fremovexattr", and "lremovexattr" syscalls, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38069r854233_fix
Configure the SUSE operating system to generate an audit record for all uses of the "setxattr", "fsetxattr", "lsetxattr","removexattr", "fremovexattr", and "lremovexattr" system calls. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -a always,exit -F arch=b32 -S setxattr,fsetxattr,lsetxattr,removexattr,fremovexattr,lremovexattr -F auid>=1000 -F auid!=4294967295 -k perm_mod -a always,exit -F arch=b64 -S setxattr,fsetxattr,lsetxattr,removexattr,fremovexattr,lremovexattr -F auid>=1000 -F auid!=4294967295 -k perm_mod To reload the rules file, restart the audit daemon: > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030250
- Vuln IDs
-
- V-234924
- Rule IDs
-
- SV-234924r854236_rule
Checks: C-38112r809467_chk
Verify the SUSE operating system generates an audit record for all uses of the "chown", "fchown", "fchownat", and "lchown" system calls. Check that the system calls are being audited by performing the following command: > sudo auditctl -l | grep chown -a always,exit -F arch=b32 -S chown,fchown,fchownat,lchown -F auid>=1000 -F auid!=-1 -k perm_mod -a always,exit -F arch=b64 -S chown,fchown,fchownat,lchown -F auid>=1000 -F auid!=-1 -k perm_mod If both the "b32" and "b64" audit rules are not defined for the "chown", "fchown", "fchownat", and "lchown" syscalls, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38075r854235_fix
Configure the SUSE operating system to generate an audit record for all uses of the "chown", "fchown", "fchownat", and "lchown" system calls. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -a always,exit -F arch=b32 -S chown,fchown,fchownat,lchown -F auid>=1000 -F auid!=4294967295 -k perm_mod -a always,exit -F arch=b64 -S chown,fchown,fchownat,lchown -F auid>=1000 -F auid!=4294967295 -k perm_mod To reload the rules file, restart the audit daemon: > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030290
- Vuln IDs
-
- V-234928
- Rule IDs
-
- SV-234928r854238_rule
Checks: C-38116r809470_chk
Verify the SUSE operating system generates an audit record for all uses of the "chmod", "fchmod" a,nd "fchmodat" system calls. Check that the system calls are being audited by performing the following command: > sudo auditctl -l | grep chmod -a always,exit -F arch=b32 -S chmod,fchmod,fchmodat -F auid>=1000 -F auid!=-1 -k perm_mod -a always,exit -F arch=b64 -S chmod,fchmod,fchmodat -F auid>=1000 -F auid!=-1 -k perm_mod If both the "b32" and "b64" audit rules are not defined for the "chmod", "fchmod", and "fchmodat" syscalls, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38079r854237_fix
Configure the SUSE operating system to generate an audit record for all uses of the "chmod", "fchmod", and "fchmodat" system calls. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -a always,exit -F arch=b32 -S chmod,fchmod,fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod -a always,exit -F arch=b64 -S chmod,fchmod,fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod To reload the rules file, restart the audit daemon: > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030330
- Vuln IDs
-
- V-234932
- Rule IDs
-
- SV-234932r854239_rule
Checks: C-38120r619065_chk
Verify an audit record is generated for all uses of the "sudoedit" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/sudoedit' -a always,exit -S all -F path=/usr/bin/sudoedit -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-sudoedit If the command does not return any output or the returned line is commented out, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38083r619066_fix
Configure the SUSE operating system to generate an audit record for all uses of the "sudoedit" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/sudoedit -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-sudoedit To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Low
- CCI
- CCI-000130
- Version
- SLES-15-030340
- Vuln IDs
-
- V-234933
- Rule IDs
-
- SV-234933r854240_rule
Checks: C-38121r619068_chk
Verify the SUSE operating system generates an audit record for all uses of the "chfn" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/chfn' -a always,exit -S all -F path=/usr/bin/chfn -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-chfn If the command does not return any output or the returned line is commented out, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38084r619069_fix
Configure the SUSE operating system to generate an audit record for all uses of the "chfn" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/chfn -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-chfn To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Low
- CCI
- CCI-000130
- Version
- SLES-15-030350
- Vuln IDs
-
- V-234934
- Rule IDs
-
- SV-234934r854241_rule
Checks: C-38122r619071_chk
Verify the SUSE operating system generates an audit record for all uses of the "mount" system call. Check that the system call is being audited by performing the following command: > sudo auditctl -l | grep -w 'mount' -a always,exit -F arch=b32 -S mount -F auid>=1000 -F auid!=-1 -k privileged-mount -a always,exit -F arch=b64 -S mount -F auid>=1000 -F auid!=-1 -k privileged-mount If both the "b32" and "b64" audit rules are not defined for the "mount" syscall, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38085r619072_fix
Configure the SUSE operating system to generate an audit record for all uses of the "mount" system call. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -a always,exit -F arch=b32 -S mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount -a always,exit -F arch=b64 -S mount -F auid>=1000 -F auid!=4294967295 -k privileged-mount To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Low
- CCI
- CCI-000130
- Version
- SLES-15-030360
- Vuln IDs
-
- V-234935
- Rule IDs
-
- SV-234935r854242_rule
Checks: C-38123r619074_chk
Verify the SUSE operating system generates an audit record for all uses of the "umount" and "umount2" system calls. Check that the system calls are being audited by performing the following command: > sudo auditctl -l | grep 'umount' -a always,exit -F arch=b32 -S umount -F auid>=1000 -F auid!=-1 -k privileged-umount -a always,exit -F arch=b32 -S umount2 -F auid>=1000 -F auid!=-1 -k privileged-umount -a always,exit -F arch=b64 -S umount2 -F auid>=1000 -F auid!=-1 -k privileged-umount If both the "b32" and "b64" audit rules are not defined for the "umount" syscall, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38086r619075_fix
Configure the SUSE operating system to generate an audit record for all uses of the "umount" and "umount2" system calls. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -a always,exit -F arch=b32 -S umount -F auid>=1000 -F auid!=4294967295 -k privileged-umount -a always,exit -F arch=b32 -S umount2 -F auid>=1000 -F auid!=4294967295 -k privileged-umount -a always,exit -F arch=b64 -S umount2 -F auid>=1000 -F auid!=4294967295 -k privileged-umount To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Low
- CCI
- CCI-000130
- Version
- SLES-15-030370
- Vuln IDs
-
- V-234936
- Rule IDs
-
- SV-234936r854243_rule
Checks: C-38124r619077_chk
Verify the SUSE operating system generates an audit record for all uses of the "ssh-agent" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/ssh-agent' -a always,exit -S all -F path=/usr/bin/ssh-agent -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-ssh-agent If the command does not return any output or the returned line is commented out, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38087r619078_fix
Configure the SUSE operating system to generate an audit record for all uses of the "ssh-agent" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/ssh-agent -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-ssh-agent To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030380
- Vuln IDs
-
- V-234937
- Rule IDs
-
- SV-234937r854244_rule
Checks: C-38125r619080_chk
Verify the SUSE operating system is generates an audit record for all uses of the "insmod" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/sbin/insmod' -w /sbin/insmod -p x -k modules If the system is configured to audit the execution of the module management program "insmod", the command will return a line. If the command does not return a line, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38088r619081_fix
Configure the SUSE operating system to audit the execution of the module management program "insmod" by adding the following line to "/etc/audit/rules.d/audit.rules": -w /sbin/insmod -p x -k modules To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030390
- Vuln IDs
-
- V-234938
- Rule IDs
-
- SV-234938r854245_rule
Checks: C-38126r619083_chk
Verify the SUSE operating system generates an audit record for all uses of the "rmmod" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/sbin/rmmod' -w /sbin/rmmod -p x -k modules If the system is configured to audit the execution of the module management program "rmmod", the command will return a line. If the command does not return a line, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38089r619084_fix
Configure the SUSE operating system to audit the execution of the module management program "rmmod" by adding the following line to "/etc/audit/rules.d/audit.rules": -w /sbin/rmmod -p x -k modules To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030400
- Vuln IDs
-
- V-234939
- Rule IDs
-
- SV-234939r854246_rule
Checks: C-38127r619086_chk
Verify the SUSE operating system generates an audit record for all uses of the "modprobe" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/sbin/modprobe' -w /sbin/modprobe -p x -k modules If the system is configured to audit the execution of the module management program "modprobe", the command will return a line. If the command does not return a line, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38090r619087_fix
Configure the SUSE operating system to audit the execution of the module management program "modprobe" by adding the following line to "/etc/audit/rules.d/audit.rules": -w /sbin/modprobe -p x -k modules To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030410
- Vuln IDs
-
- V-234940
- Rule IDs
-
- SV-234940r854247_rule
Checks: C-38128r619089_chk
Verify the SUSE operating system generates an audit record for all uses of the "kmod" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/kmod' -w /usr/bin/kmod -p x -k modules If the system is configured to audit the execution of the module management program "kmod", the command will return a line. If the command does not return a line, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38091r619090_fix
Configure the SUSE operating system to audit the execution of the module management program "kmod" by adding the following line to "/etc/audit/rules.d/audit.rules": -w /usr/bin/kmod -p x -k modules To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030420
- Vuln IDs
-
- V-234941
- Rule IDs
-
- SV-234941r854248_rule
Checks: C-38129r619092_chk
Verify the SUSE operating system generates an audit record for all uses of the "chmod" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/chmod' -a always,exit -S all -F path=/usr/bin/chmod -F perm=x -F auid>=1000 -F auid!=-1 -k prim_mod If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38092r619093_fix
Configure the SUSE operating system to generate an audit record for all uses of the "chmod" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/chmod -F perm=x -F auid>=1000 -F auid!=4294967295 -k prim_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030430
- Vuln IDs
-
- V-234942
- Rule IDs
-
- SV-234942r854249_rule
Checks: C-38130r619095_chk
Verify the SUSE operating system generates an audit record for all uses of the "setfacl" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/setfacl' -a always,exit -S all -F path=/usr/bin/setfacl -F perm=x -F auid>=1000 -F auid!=-1 -k prim_mod If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38093r619096_fix
Configure the SUSE operating system to generate an audit record for all uses of the "setfacl" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/setfacl -F perm=x -F auid>=1000 -F auid!=4294967295 -k prim_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030440
- Vuln IDs
-
- V-234943
- Rule IDs
-
- SV-234943r854250_rule
Checks: C-38131r619098_chk
Verify the SUSE operating system generates an audit record for all uses of the "chacl" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/chacl' -a always,exit -S all -F path=/usr/bin/chacl -F perm=x -F auid>=1000 -F auid!=-1 -k prim_mod If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38094r619099_fix
Configure the SUSE operating system to generate an audit record for all uses of the "chacl" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/chacl -F perm=x -F auid>=1000 -F auid!=4294967295 -k prim_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030450
- Vuln IDs
-
- V-234944
- Rule IDs
-
- SV-234944r854251_rule
Checks: C-38132r619101_chk
Verify the SUSE operating system generates an audit record for all uses of the "chcon" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/chcon' -a always,exit -S all -F path=/usr/bin/chcon -F perm=x -F auid>=1000 -F auid!=-1 -k prim_mod If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38095r619102_fix
Configure the SUSE operating system to generate an audit record for all uses of the "chcon" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/chcon -F perm=x -F auid>=1000 -F auid!=4294967295 -k prim_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030460
- Vuln IDs
-
- V-234945
- Rule IDs
-
- SV-234945r854252_rule
Checks: C-38133r619104_chk
Verify the SUSE operating system generates an audit record for all uses of the "rm" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/rm' -a always,exit -S all -F path=/usr/bin/rm -F perm=x -F auid>=1000 -F auid!=-1 -k prim_mod If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38096r619105_fix
Configure the SUSE operating system to generate an audit record for all uses of the "rm" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/rm -F perm=x -F auid>=1000 -F auid!=4294967295 -k prim_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030470
- Vuln IDs
-
- V-234946
- Rule IDs
-
- SV-234946r854253_rule
Checks: C-38134r619107_chk
Verify the SUSE operating system generates an audit record when all modifications to the "tallylog" file occur. Check that the file is being audited by performing the following command: > sudo auditctl -l | grep -w '/var/log/tallylog' -w /var/log/tallylog -p wa -k logins If the command does not return a line, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38097r619108_fix
Configure the SUSE operating system to generate an audit record for any all modifications to the "tallylog" file occur. Add or update the following rule to "/etc/audit/rules.d/audit.rules": -w /var/log/tallylog -p wa -k logins To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030480
- Vuln IDs
-
- V-234947
- Rule IDs
-
- SV-234947r854254_rule
Checks: C-38135r619110_chk
Verify the SUSE operating system generates an audit record when all modifications to the "lastlog" file occur. Check that the file is being audited by performing the following command: > sudo auditctl -l | grep -w '/var/log/lastlog' -w /var/log/lastlog -p wa -k logins If the command does not return a line, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38098r619111_fix
Configure the SUSE operating system to generate an audit record for any all modifications to the "lastlog" file occur. Add or update the following rule to "/etc/audit/rules.d/audit.rules": -w /var/log/lastlog -p wa -k logins To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030490
- Vuln IDs
-
- V-234948
- Rule IDs
-
- SV-234948r854255_rule
Checks: C-38136r619113_chk
Verify the SUSE operating system generates an audit record for all uses of the "passmass" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/passmass' -a always,exit -S all -F path=/usr/bin/passmass -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-passmass If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38099r619114_fix
Configure the SUSE operating system to generate an audit record for all uses of the "passmass" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/passmass -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-passmass To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030500
- Vuln IDs
-
- V-234949
- Rule IDs
-
- SV-234949r854256_rule
Checks: C-38137r619116_chk
Verify the SUSE operating system generates an audit record for any use of the "usermod" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/sbin/usermod' -a always,exit -S all -F path=/usr/sbin/usermod -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-usermod If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38100r619117_fix
Configure the SUSE operating system to generate an audit record for all uses of the "usermod" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/sbin/usermod -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-usermod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030510
- Vuln IDs
-
- V-234950
- Rule IDs
-
- SV-234950r854257_rule
Checks: C-38138r619119_chk
Verify the SUSE operating system generates an audit record for any use of the "pam_timestamp_check" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/sbin/pam_timestamp_check' -a always,exit -S all -F path=/sbin/pam_timestamp_check -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-pam_timestamp_check If the command does not return any output, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38101r619120_fix
Configure the SUSE operating system to generate an audit record for all uses of the "pam_timestamp_check" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/sbin/pam_timestamp_check -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-pam_timestamp_check To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030520
- Vuln IDs
-
- V-234951
- Rule IDs
-
- SV-234951r854258_rule
Checks: C-38139r619122_chk
Verify the SUSE operating system generates an audit record for all uses of the "delete_module" system call. Check that the system call is being audited by performing the following command: > sudo auditctl -l | grep -w 'delete_module' -a always,exit -F arch=b32 -S delete_module -F auid>=1000 -F auid!=-1 -k unload_module -a always,exit -F arch=b64 -S delete_module -F auid>=1000 -F auid!=-1 -k unload_module If both the "b32" and "b64" audit rules are not defined for the "unload_module" syscall, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38102r619123_fix
Configure the SUSE operating system to generate an audit record for all uses of the "delete_module" system call. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -a always,exit -F arch=b32 -S delete_module -F auid>=1000 -F auid!=4294967295 -k unload_module -a always,exit -F arch=b64 -S delete_module -F auid>=1000 -F auid!=4294967295 -k unload_module To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030530
- Vuln IDs
-
- V-234952
- Rule IDs
-
- SV-234952r854260_rule
Checks: C-38140r809473_chk
Verify the SUSE operating system generates an audit record for all uses of the "init_module" and "finit_module" system calls. Check that the system calls are being audited by performing the following command: > sudo auditctl -l | grep init_module -a always,exit -F arch=b32 -S init_module,finit_module -F auid>=1000 -F auid!=-1 -k moduleload -a always,exit -F arch=b64 -S init_module,finit_module -F auid>=1000 -F auid!=-1 -k moduleload If both the "b32" and "b64" audit rules are not defined for the init_module" and "finit_module" syscalls, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38103r854259_fix
Configure the SUSE operating system to generate an audit record for all uses of the "init_module" and "finit_module" system calls. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -a always,exit -F arch=b32 -S init_module,finit_module -F auid>=1000 -F auid!=4294967295 -k moduleload -a always,exit -F arch=b64 -S init_module,finit_module -F auid>=1000 -F auid!=4294967295 -k moduleload To reload the rules file, restart the audit daemon: > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Medium
- CCI
- CCI-000130
- Version
- SLES-15-030550
- Vuln IDs
-
- V-234954
- Rule IDs
-
- SV-234954r854261_rule
Checks: C-38142r619131_chk
Verify the SUSE operating system generates an audit record for any use of the "su" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/su' -a always,exit -S all -F path=/usr/bin/su -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-priv_change If the command does not return any output or the returned line is commented out, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38105r619132_fix
Configure the SUSE operating system to generate an audit record for all uses of the "su" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/su -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-priv_change To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-3
- Severity
- Low
- CCI
- CCI-000130
- Version
- SLES-15-030560
- Vuln IDs
-
- V-234955
- Rule IDs
-
- SV-234955r854262_rule
Checks: C-38143r619134_chk
Verify the SUSE operating system generates an audit record for any use of the "sudo" command. Check that the command is being audited by performing the following command: > sudo auditctl -l | grep -w '/usr/bin/sudo' -a always,exit -S all -F path=/usr/bin/sudo -F perm=x -F auid>=1000 -F auid!=-1 -k privileged-sudo If the command does not return any output, or the returned line is commented out, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38106r619135_fix
Configure the SUSE operating system to generate an audit record for all uses of the "sudo" command. Add or update the following rules in the "/etc/audit/rules.d/audit.rules" file: -a always,exit -F path=/usr/bin/sudo -F perm=x -F auid>=1000 -F auid!=4294967295 -k privileged-sudo To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-5
- Severity
- Medium
- CCI
- CCI-000139
- Version
- SLES-15-030570
- Vuln IDs
-
- V-234956
- Rule IDs
-
- SV-234956r622137_rule
Checks: C-38144r619137_chk
Verify the administrators are notified in the event of a SUSE operating system audit processing failure by inspecting "/etc/audit/auditd.conf". Check if the system is configured to send email to an account when it needs to notify an administrator with the following command: > sudo grep action_mail /etc/audit/auditd.conf action_mail_acct = root If the value of the "action_mail_acct" keyword is not set to "root" and/or other accounts for security personnel, the "action_mail_acct" keyword is missing, or the returned line is commented out, this is a finding.
Fix: F-38107r619138_fix
Configure the auditd service to notify the administrators in the event of a SUSE operating system audit processing failure. Edit the following line in "/etc/audit/auditd.conf" to ensure that administrators are notified via email for those situations: action_mail_acct = root
- RMF Control
- AU-5
- Severity
- Medium
- CCI
- CCI-000139
- Version
- SLES-15-030580
- Vuln IDs
-
- V-234957
- Rule IDs
-
- SV-234957r622137_rule
Checks: C-38145r619140_chk
Verify the administrators are notified in the event of a SUSE operating system audit processing failure by checking that "/etc/aliases" has a defined value for root. > grep -i "^postmaster:" /etc/aliases postmaster: root If the above command does not return a value of "root", or the output is commented out, this is a finding Verify the alias for root forwards to a monitored e-mail account: > grep -i "^root:" /etc/aliases root: person@server.mil If the alias for root does not forward to a monitored e-mail account, or the output is commented out, this is a finding.
Fix: F-38108r619141_fix
Configure the auditd service to notify the administrators in the event of a SUSE operating system audit processing failure. Configure an alias value for the postmaster with the following command: > sudo sh -c 'echo "postmaster: root" >> /etc/aliases' Configure an alias for root that forwards to a monitored email address with the following command: > sudo sh -c 'echo "root: box@server.mil" >> /etc/aliases' The following command must be run to implement changes to the /etc/aliases file: > sudo newaliases
- RMF Control
- AU-5
- Severity
- Medium
- CCI
- CCI-000140
- Version
- SLES-15-030590
- Vuln IDs
-
- V-234958
- Rule IDs
-
- SV-234958r622137_rule
Checks: C-38146r619143_chk
Verify the SUSE operating system takes the appropriate action when the audit storage volume is full. Check that the SUSE operating system takes the appropriate action when the audit storage volume is full with the following command: > sudo grep disk_full_action /etc/audit/auditd.conf disk_full_action = SYSLOG If the value of the "disk_full_action" option is not "SYSLOG", "SINGLE", or "HALT", or the line is commented out, this is a finding.
Fix: F-38109r619144_fix
Configure the SUSE operating system to shut down by default upon audit failure (unless availability is an overriding concern). Add or update the following line (depending on configuration "disk_full_action" can be set to "SYSLOG", "SINGLE", or "HALT" depending on configuration) in "/etc/audit/auditd.conf" file: disk_full_action = HALT
- RMF Control
- AU-9
- Severity
- Medium
- CCI
- CCI-000162
- Version
- SLES-15-030600
- Vuln IDs
-
- V-234959
- Rule IDs
-
- SV-234959r622137_rule
Checks: C-38147r619146_chk
Verify that the SUSE operating system protects audit rules from unauthorized modification. Check that "permissions.local" file contains the correct permissions rules with the following command: > grep -i audit /etc/permissions.local /var/log/audit root:root 600 /var/log/audit/audit.log root:root 600 /etc/audit/audit.rules root:root 640 /etc/audit/rules.d/audit.rules root:root 640 If the command does not return any output, this is a finding. Check that all of the audit information files and folders have the correct permissions with the following command: > sudo chkstat /etc/permissions.local If the command returns any output, this is a finding.
Fix: F-38110r619147_fix
Configure the SUSE operating system to protect audit rules from unauthorized modification. Add or update the following rules in "/etc/permissions.local": /var/log/audit root:root 600 /var/log/audit/audit.log root:root 600 /etc/audit/audit.rules root:root 640 /etc/audit/rules.d/audit.rules root:root 640 Set the correct permissions with the following command: > sudo chkstat --set /etc/permissions.local
- RMF Control
- AU-9
- Severity
- Medium
- CCI
- CCI-001493
- Version
- SLES-15-030620
- Vuln IDs
-
- V-234961
- Rule IDs
-
- SV-234961r622137_rule
Checks: C-38149r619152_chk
Verify that the SUSE operating system audit tools have the proper permissions configured in the permissions profile to protect from unauthorized access. Check that "permissions.local" file contains the correct permissions rules with the following command: > grep "^/usr/sbin/au" /etc/permissions.local /usr/sbin/audispd root:root 0750 /usr/sbin/auditctl root:root 0750 /usr/sbin/auditd root:root 0750 /usr/sbin/ausearch root:root 0755 /usr/sbin/aureport root:root 0755 /usr/sbin/autrace root:root 0750 /usr/sbin/augenrules root:root 0750 If the command does not return any output, this is a finding. Check that all of the audit information files and folders have the correct permissions with the following command: > sudo chkstat /etc/permissions.local If the command returns any output, this is a finding.
Fix: F-38112r619153_fix
Configure the SUSE operating system audit tools to have proper permissions set in the permissions profile to protect from unauthorized access. Edit the file "/etc/permissions.local" and insert the following text: /usr/sbin/audispd root:root 0750 /usr/sbin/auditctl root:root 0750 /usr/sbin/auditd root:root 0750 /usr/sbin/ausearch root:root 0755 /usr/sbin/aureport root:root 0755 /usr/sbin/autrace root:root 0750 /usr/sbin/augenrules root:root 0750 Set the correct permissions with the following command: > sudo chkstat --set /etc/permissions.local
- RMF Control
- AU-9
- Severity
- Medium
- CCI
- CCI-001496
- Version
- SLES-15-030630
- Vuln IDs
-
- V-234962
- Rule IDs
-
- SV-234962r877393_rule
Checks: C-38150r619155_chk
Verify that the SUSE operating system file integrity tool is configured to protect the integrity of the audit tools. Check that AIDE is properly configured to protect the integrity of the audit tools by running the following command: > sudo grep /usr/sbin/au /etc/aide.conf /usr/sbin/auditctl p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/auditd p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/ausearch p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/aureport p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/autrace p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/audispd p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/augenrules p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 If AIDE is properly configured to protect the integrity of the audit tools, all lines listed above will be returned from the command. If one or more lines are missing, or is commented out, this is a finding.
Fix: F-38113r619156_fix
Configure the SUSE operating system file integrity tool to protect the integrity of the audit tools. Add or update the following lines to "/etc/aide.conf" to protect the integrity of the audit tools: # audit tools /usr/sbin/auditctl p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/auditd p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/ausearch p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/aureport p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/autrace p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/audispd p+i+n+u+g+s+b+acl+selinux+xattrs+sha512 /usr/sbin/augenrules p+i+n+u+g+s+b+acl+selinux+xattrs+sha512
- RMF Control
- CM-5
- Severity
- Low
- CCI
- CCI-001814
- Version
- SLES-15-030640
- Vuln IDs
-
- V-234963
- Rule IDs
-
- SV-234963r854263_rule
Checks: C-38151r619158_chk
Verify the SUSE operating system generates an audit record for any privileged use of the "execve" system call. > sudo auditctl -l | grep -w 'execve' -a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k setuid -a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k setuid -a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k setgid -a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k setgid If both the "b32" and "b64" audit rules for "SUID" files are not defined, this is a finding. If both the "b32" and "b64" audit rules for "SGID" files are not defined, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38114r619159_fix
Configure the SUSE operating system to generate an audit record for any privileged use of the "execve" system call. Add or update the following rules in "/etc/audit/rules.d/audit.rules": -a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k setuid -a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k setuid -a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k setgid -a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k setgid To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-12
- Severity
- Medium
- CCI
- CCI-000172
- Version
- SLES-15-030650
- Vuln IDs
-
- V-234964
- Rule IDs
-
- SV-234964r877036_rule
Checks: C-38152r619161_chk
Verify the SUSE operating system auditing package is installed. Check that the "audit" package is installed by performing the following command: > zypper info audit | grep Installed i | audit | User Space Tools for 2.6 Kernel Auditing If the package "audit" is not installed on the system, then this is a finding.
Fix: F-38115r619162_fix
The SUSE operating system auditd package must be installed on the system. If it is not installed, use the following command to install it: > sudo zypper in audit
- RMF Control
- AU-4
- Severity
- Medium
- CCI
- CCI-001849
- Version
- SLES-15-030660
- Vuln IDs
-
- V-234965
- Rule IDs
-
- SV-234965r877391_rule
Checks: C-38153r619164_chk
Verify the SUSE operating system allocates audit record storage capacity to store at least one week of audit records when audit records are not immediately sent to a central audit record storage facility. Determine to which partition the audit records are being written with the following command: > sudo grep -iw log_file /etc/audit/auditd.conf log_file = /var/log/audit/audit.log Check the size of the partition that audit records are written to (with the example being /var/log/audit/) with the following command: > df -h /var/log/audit/ /dev/sda2 24G 10.4G 13.6G 43% /var If the audit records are not written to a partition made specifically for audit records (/var/log/audit is a separate partition), determine the amount of space being used by other files in the partition with the following command: > sudo du -sh [audit_partition] 1.8G /var/log/audit The partition size needed to capture a week of audit records is based on the activity level of the system and the total storage capacity available. In normal circumstances, 10.0 GB of storage space for audit records will be sufficient. If the audit record partition is not allocated sufficient storage capacity, this is a finding.
Fix: F-38116r619165_fix
Allocate enough storage capacity for at least one week of SUSE operating system audit records when audit records are not immediately sent to a central audit record storage facility. If audit records are stored on a partition made specifically for audit records, use the "YaST2 - Partitioner" program (installation and configuration tool for Linux) to resize the partition with sufficient space to contain one week of audit records. If audit records are not stored on a partition made specifically for audit records, a new partition with sufficient amount of space will need be to be created. The new partition can be created using the "YaST2 - Partitioner" program on the system.
- RMF Control
- AU-4
- Severity
- Medium
- CCI
- CCI-001851
- Version
- SLES-15-030670
- Vuln IDs
-
- V-234966
- Rule IDs
-
- SV-234966r877390_rule
Checks: C-38154r619167_chk
Verify that the "audit-audispd-plugins" package is installed on the SUSE operating system. Check that the "audit-audispd-plugins" package is installed on the SUSE operating system with the following command: > zypper info audit-audispd-plugins | grep Installed If the "audit-audispd-plugins" package is not installed, this is a finding. Verify the "au-remote" plugin is enabled with the following command: > sudo grep -i active /etc/audisp/plugins.d/au-remote.conf active = yes If "active" is missing, commented out, or is not set to "yes", this is a finding.
Fix: F-38117r619168_fix
Install the "audit-audispd-plugins" package on the SUSE operating system by running the following command: > sudo zypper install audit-audispd-plugins In "/etc/audisp/plugins.d/au-remote.conf", change the value of "active" to "yes", or add "active = yes" if no such setting exists in the file.
- RMF Control
- AU-4
- Severity
- Low
- CCI
- CCI-001851
- Version
- SLES-15-030680
- Vuln IDs
-
- V-234967
- Rule IDs
-
- SV-234967r877390_rule
Checks: C-38155r619170_chk
Determine if the SUSE operating system audit event multiplexor is configured to use Kerberos by running the following command: > sudo grep enable_krb5 /etc/audisp/audisp-remote.conf enable_krb5 = yes If "enable_krb5" is not set to "yes", or is commented out, this is a finding.
Fix: F-38118r619171_fix
Configure the SUSE operating system audit event multiplexor to use Kerberos by editing the "/etc/audisp/audisp-remote.conf" file. Edit or add the following line to match the text below: enable_krb5 = yes
- RMF Control
- AU-4
- Severity
- Low
- CCI
- CCI-001851
- Version
- SLES-15-030690
- Vuln IDs
-
- V-234968
- Rule IDs
-
- SV-234968r877390_rule
Checks: C-38156r619173_chk
Verify "audispd" off-loads audit records onto a different system or media from the SUSE operating system being audited. Check if "audispd" is configured to off-load audit records onto a different system or media from the SUSE operating system by running the following command: > sudo grep remote_server /etc/audisp/audisp-remote.conf remote_server = 192.168.1.101 If "remote_server" is not set to an external server or media, or is commented out, this is a finding.
Fix: F-38119r619174_fix
Configure the SUSE operating system "/etc/audisp/audisp-remote.conf" file to off-load audit records onto a different system or media by adding or editing the following line with the correct IP address: remote_server = [IP ADDRESS]
- RMF Control
- AU-5
- Severity
- Medium
- CCI
- CCI-001855
- Version
- SLES-15-030700
- Vuln IDs
-
- V-234969
- Rule IDs
-
- SV-234969r877389_rule
Checks: C-38157r619176_chk
Determine if the SUSE operating system auditd is configured to notify the SA and ISSO when the audit record storage volume reaches 75 percent of the storage capacity. Check the system configuration to determine the partition to which audit records are written using the following command: > sudo grep -iw log_file /etc/audit/auditd.conf log_file = /var/log/audit/audit.log Check the size of the partition to which audit records are written (e.g., "/var/log/audit/"): > df -h /var/log/audit/ /dev/sda2 24G 10.4G 13.6G 43% /var If the audit records are not being written to a partition specifically created for audit records (in this example "/var/log/audit" is a separate partition), use the following command to determine the amount of space other files in the partition currently occupy: > sudo du -sh <partition> 1.8G /var/log/audit Determine the threshold for the system to take action when 75 percent of the repository maximum audit record storage capacity is reached: > sudo grep -iw space_left /etc/audit/auditd.conf space_left = 225 If the value of the "space_left" keyword is not set to 25 percent of the total partition size, this is a finding.
Fix: F-38120r619177_fix
Check the system configuration to determine the partition to which the audit records are written: > sudo grep -iw log_file /etc/audit/auditd.conf Determine the size of the partition to which audit records are written (e.g., "/var/log/audit/"): > df -h /var/log/audit/ Set the value of the "space_left" keyword in "/etc/audit/auditd.conf" to 25 percent of the partition size.
- RMF Control
- AU-12
- Severity
- Medium
- CCI
- CCI-000172
- Version
- SLES-15-030740
- Vuln IDs
-
- V-234973
- Rule IDs
-
- SV-234973r809559_rule
Checks: C-38161r809476_chk
Verify the SUSE operating system generates an audit record for all uses of the "unlink", "unlinkat", "rename", "renameat", and "rmdir" system calls. Check that the system calls are being audited by performing the following command: > sudo auditctl -l | grep 'unlink\|rename\|rmdir' -a always,exit -F arch=b32 -S unlink,unlinkat,rename,renameat,rmdir -F auid>=1000 -F auid!=-1 -k perm_mod -a always,exit -F arch=b64 -S unlink,unlinkat,rename,renameat,rmdir -F auid>=1000 -F auid!=-1 -k perm_mod If both the "b32" and "b64" audit rules are not defined for the "unlink", "unlinkat", "rename", "renameat", and "rmdir" syscalls, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38124r809558_fix
Configure the SUSE operating system to generate an audit record for all uses of the "unlink", "unlinkat", "rename", "renameat", and "rmdir" system calls. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -a always,exit -F arch=b32 -S unlink,unlinkat,rename,renameat,rmdir -F auid>=1000 -F auid!=4294967295 -k perm_mod -a always,exit -F arch=b64 -S unlink,unlinkat,rename,renameat,rmdir -F auid>=1000 -F auid!=4294967295 -k perm_mod To reload the rules file, restart the audit daemon: > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-12
- Severity
- Medium
- CCI
- CCI-000172
- Version
- SLES-15-030760
- Vuln IDs
-
- V-234975
- Rule IDs
-
- SV-234975r622137_rule
Checks: C-38163r619194_chk
Verify the SUSE operating system generates an audit record for the "/run/utmp" file. Check that the file is being audited by performing the following command: > sudo auditctl -l | grep -w '/run/utmp' -w /run/utmp -p wa -k login_mod If the command does not return a line that match the example, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38126r619195_fix
Configure the SUSE operating system to generate an audit record for the "/run/utmp" file. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -w /run/utmp -p wa -k login_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-12
- Severity
- Medium
- CCI
- CCI-000172
- Version
- SLES-15-030770
- Vuln IDs
-
- V-234976
- Rule IDs
-
- SV-234976r622137_rule
Checks: C-38164r619197_chk
Verify the SUSE operating system generates an audit record for the "/var/log/wtmp" file. Check that the file is being audited by performing the following command: > sudo auditctl -l | grep -w '/var/log/wtmp' -w /var/log/wtmp -p wa -k login_mod If the command does not return a line that matches the example, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38127r619198_fix
Configure the SUSE operating system to generate an audit record for the "/var/log/wtmp" file. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -w /var/log/wtmp -p wa -k login_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-12
- Severity
- Medium
- CCI
- CCI-000172
- Version
- SLES-15-030780
- Vuln IDs
-
- V-234977
- Rule IDs
-
- SV-234977r622137_rule
Checks: C-38165r619200_chk
Verify the SUSE operating system generates an audit record for the "/var/log/btmp" file. Check that the file is being audited by performing the following command: > sudo auditctl -l | grep -w '/var/log/btmp' -w /var/log/btmp -p wa -k login_mod If the command does not return a line that matches the example, this is a finding. Note: The "-k" allows for specifying an arbitrary identifier. The string following "-k" does not need to match the example output above.
Fix: F-38128r619201_fix
Configure the SUSE operating system to generate an audit record for the "/var/log/btmp" file. Add or update the following rules to "/etc/audit/rules.d/audit.rules": -w /var/log/btmp -p wa -k login_mod To reload the rules file, restart the audit daemon > sudo systemctl restart auditd.service or issue the following command: > sudo augenrules --load
- RMF Control
- AU-4
- Severity
- Medium
- CCI
- CCI-001851
- Version
- SLES-15-030790
- Vuln IDs
-
- V-234978
- Rule IDs
-
- SV-234978r854270_rule
Checks: C-38166r619203_chk
Verify what action the audit system takes if it cannot off-load audit records to a different system or storage media from the SUSE operating system being audited. Check the action that the audit system takes in the event of a network failure with the following command: > sudo grep -i "network_failure_action" /etc/audisp/audisp-remote.conf network_failure_action = syslog If the "network_failure_action" option is not set to "syslog", "single", or "halt" or the line is commented out, this is a finding.
Fix: F-38129r619204_fix
Configure the SUSE operating system to take the appropriate action if it cannot off-load audit records to a different system or storage media from the system being audited due to a network failure. Uncomment the "network_failure_action" option in "/etc/audisp/audisp-remote.conf" and set it to "syslog", "single", or "halt". See the example below: network_failure_action = syslog
- RMF Control
- AU-4
- Severity
- Medium
- CCI
- CCI-001851
- Version
- SLES-15-030800
- Vuln IDs
-
- V-234979
- Rule IDs
-
- SV-234979r854271_rule
Checks: C-38167r619206_chk
Verify the audit system off-loads audit records if the SUSE operating system storage volume becomes full. Check that the records are properly off-loaded to a remote server with the following command: > sudo grep -i "disk_full_action" /etc/audisp/audisp-remote.conf disk_full_action = syslog If "disk_full_action" is not set to "syslog", "single", or "halt" or the line is commented out, this is a finding.
Fix: F-38130r619207_fix
Configure the SUSE operating system to take the appropriate action if the audit storage is full. Add, edit, or uncomment the "disk_full_action" option in "/etc/audisp/audisp-remote.conf". Set it to "syslog", "single" or "halt" as in the example below: disk_full_action = syslog
- RMF Control
- CM-6
- Severity
- Low
- CCI
- CCI-000366
- Version
- SLES-15-030810
- Vuln IDs
-
- V-234980
- Rule IDs
-
- SV-234980r622137_rule
Checks: C-38168r619209_chk
Verify that the SUSE operating system has a separate file system/partition for the system audit data path. Check that a file system/partition has been created for the system audit data path with the following command: Note: "/var/log/audit" is used as the example as it is a common location. > grep /var/log/audit /etc/fstab UUID=3645951a /var/log/audit ext4 defaults 1 2 If a separate entry for the system audit data path (in this example the "/var/log/audit" path) does not exist, ask the System Administrator if the system audit logs are being written to a different file system/partition on the system and then grep for that file system/partition. If a separate file system/partition does not exist for the system audit data path, this is a finding.
Fix: F-38131r619210_fix
Migrate the SUSE operating system audit data path onto a separate file system.
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-030820
- Vuln IDs
-
- V-234981
- Rule IDs
-
- SV-234981r622137_rule
Checks: C-38169r619212_chk
Verify syscall auditing has not been disabled: > auditctl -l | grep -i "a task,never" If any results are returned, this is a finding. Verify the default rule "-a task,never" is not statically defined : > grep -rv "^#" /etc/audit/rules.d/ | grep -i "a task,never" If any results are returned, this is a finding.
Fix: F-38132r619213_fix
Remove the "-a task,never" rule from the /etc/audit/rules.d/audit.rules file. The audit daemon must be restarted for the changes to take effect. > sudo systemctl restart auditd.service
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040000
- Vuln IDs
-
- V-234982
- Rule IDs
-
- SV-234982r622137_rule
Checks: C-38170r619215_chk
Verify the SUSE operating system enforces a delay of at least four seconds between logon prompts following a failed logon attempt. Check that the SUSE operating system enforces a delay of at least four seconds between logon prompts following a failed logon attempt with the following command: > grep FAIL_DELAY /etc/login.defs FAIL_DELAY 4 If the value of "FAIL_DELAY" is not set to "4", "FAIL_DELAY" is commented out, or "FAIL_DELAY" is missing, then this is a finding.
Fix: F-38133r619216_fix
Configure the SUSE operating system to enforce a delay of at least four seconds between logon prompts following a failed logon attempt. Add or update the following variable in "/etc/login.defs" to match the line below ("FAIL_DELAY" must have a value of "4" or higher): FAIL_DELAY 4
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040010
- Vuln IDs
-
- V-234983
- Rule IDs
-
- SV-234983r622137_rule
Checks: C-38171r619218_chk
Verify the SUSE operating system enforces a delay of at least four seconds between logon prompts following a failed logon attempt. > grep pam_faildelay /etc/pam.d/common-auth auth required pam_faildelay.so delay=4000000 If the value of "delay" is not set to "4000000", "delay" is commented out, "delay" is missing, or the "pam_faildelay" line is missing completely, this is a finding.
Fix: F-38134r619219_fix
Configure the SUSE operating system to enforce a delay of at least four seconds between logon prompts following a failed logon attempt. Edit the file "/etc/pam.d/common-auth". Add a parameter "pam_faildelay" and set it to: > delay is in micro seconds auth required pam_faildelay.so delay=4000000
- RMF Control
- CM-6
- Severity
- High
- CCI
- CCI-000366
- Version
- SLES-15-040020
- Vuln IDs
-
- V-234984
- Rule IDs
-
- SV-234984r622137_rule
Checks: C-38172r619221_chk
Text: Verify there are no ".shosts" files on the SUSE operating system. Check the system for the existence of these files with the following command: > sudo find / \( -path /.snapshots -o -path /sys -o -path /proc \) -prune -o -name '.shosts' -print If any ".shosts" files are found on the system, this is a finding.
Fix: F-38135r619222_fix
Remove any ".shosts" files found on the SUSE operating system. > sudo rm /[path]/[to]/[file]/.shosts
- RMF Control
- CM-6
- Severity
- High
- CCI
- CCI-000366
- Version
- SLES-15-040030
- Vuln IDs
-
- V-234985
- Rule IDs
-
- SV-234985r622137_rule
Checks: C-38173r619224_chk
Verify there are no "shosts.equiv" files on the SUSE operating system. Check the system for the existence of these files with the following command: > sudo find /etc -name shosts.equiv If any "shosts.equiv" files are found on the system, this is a finding.
Fix: F-38136r619225_fix
Remove any "shosts.equiv" files found on the SUSE operating system. > sudo rm /[path]/[to]/[file]/shosts.equiv
- RMF Control
- CM-6
- Severity
- Low
- CCI
- CCI-000366
- Version
- SLES-15-040040
- Vuln IDs
-
- V-234986
- Rule IDs
-
- SV-234986r880968_rule
Checks: C-38174r880968_chk
Verify that the SUSE operating system file integrity tool is configured to verify extended attributes. If there is no application installed to perform integrity checks, this is a finding. Check the "/etc/aide.conf" file to determine if the "xattrs" rule has been added to the rule list being applied to the files and directories selection lists. An example rule that includes the "acl" rule follows: All= p+i+n+u+g+s+m+S+sha512+acl+xattrs+selinux /bin All > apply the custom rule to the files in bin /sbin All > apply the same custom rule to the files in sbin If the "acl" rule is not being used on all selection lines in the "/etc/aide.conf" file, or extended attributes are not being checked by another file integrity tool, this is a finding.
Fix: F-38137r619228_fix
Configure the SUSE operating system file integrity tool to check file and directory ACLs. If AIDE is installed, ensure the "acl" rule is present on all file and directory selection lists.
- RMF Control
- CM-6
- Severity
- Low
- CCI
- CCI-000366
- Version
- SLES-15-040050
- Vuln IDs
-
- V-234987
- Rule IDs
-
- SV-234987r880969_rule
Checks: C-38175r880969_chk
Verify that the SUSE operating system file integrity tool is configured to verify extended attributes. If there is no application installed to perform integrity checks, this is a finding. Check the "/etc/aide.conf" file to determine if the "xattrs" rule has been added to the rule list being applied to the files and directories selection lists. An example rule that includes the "xattrs" rule follows: All= p+i+n+u+g+s+m+S+sha512+acl+xattrs+selinux /bin All > apply the custom rule to the files in bin /sbin All > apply the same custom rule to the files in sbin If the "xattrs" rule is not being used on all selection lines in the "/etc/aide.conf" file, or extended attributes are not being checked by another file integrity tool, this is a finding.
Fix: F-38138r619231_fix
Configure the SUSE operating system file integrity tool to check file and directory extended attributes. If AIDE is installed, ensure the "xattrs" rule is present on all file and directory selection lists.
- RMF Control
- CM-6
- Severity
- High
- CCI
- CCI-000366
- Version
- SLES-15-040060
- Vuln IDs
-
- V-234988
- Rule IDs
-
- SV-234988r622137_rule
Checks: C-38176r619233_chk
Verify the SUSE operating system is not configured to reboot the system when Ctrl-Alt-Delete is pressed. Check that the ctrl-alt-del.target is masked with the following command: > systemctl status ctrl-alt-del.target ctrl-alt-del.target Loaded: masked (/dev/null; maksed) Active: inactive (dead) If the ctrl-alt-del.target is not masked, this is a finding.
Fix: F-38139r619234_fix
Configure the system to disable the Ctrl-Alt-Delete sequence for the command line with the following commands: > sudo systemctl disable ctrl-alt-del.target > sudo systemctl mask ctrl-alt-del.target And reload the daemon to take effect > sudo systemctl daemon-reload
- RMF Control
- CM-6
- Severity
- High
- CCI
- CCI-000366
- Version
- SLES-15-040061
- Vuln IDs
-
- V-234989
- Rule IDs
-
- SV-234989r622137_rule
Checks: C-38177r619236_chk
Note: If a graphical user interface is not installed, this requirement is Not Applicable. Verify the SUSE operating system is not configured to reboot the system when Ctrl-Alt-Delete is pressed in the graphical user interface. Check that the dconf setting was disabled to allow the Ctrl-Alt-Delete sequence in the graphical user interface with the following command: Check the default logout key sequence: > sudo gsettings get org.gnome.settings-daemon.plugins.media-keys logout [''] Check that the value is not writable and cannot be changed by the user: > sudo gsettings writable org.gnome.settings-daemon.plugins.media-keys logout false If the logout value is not [''] and the writable status is not false, this is a finding.
Fix: F-38140r619237_fix
Configure the system to disable the Ctrl-Alt-Delete sequence for the graphical user interface. Create a database to contain the system-wide setting (if it does not already exist) with the following steps: 1. Create a user profile and with the listed content: /etc/dconf/profile/user user-db:user system-db:local 2. Create the following directories: > sudo mkdir -p /etc/dconf/db/local.d/ > sudo mkdir -p /etc/dconf/db/local.d/locks/ 3. Add the following files with the listed content: /etc/dconf/db/local.d/01-fips-settings [org/gnome/settings-daemon/plugins/media-keys] logout=[''] /etc/dconf/db/local.d/locks/01-fips-locks /org/gnome/settings-daemon/plugins/media-keys/logout 4. Update the dconf database: > sudo dconf update
- RMF Control
- CM-6
- Severity
- High
- CCI
- CCI-000366
- Version
- SLES-15-040062
- Vuln IDs
-
- V-234990
- Rule IDs
-
- SV-234990r622137_rule
Checks: C-38178r619239_chk
Verify the SUSE operating system is not configured to reboot the system when Ctrl-Alt-Delete is pressed seven times within two seconds with the following command: > sudo grep -i ctrl /etc/systemd/system.conf CtrlAltDelBurstAction=none If the "CtrlAltDelBurstAction" is not set to "none", commented out, or is missing, this is a finding.
Fix: F-38141r619240_fix
Configure the system to disable the CtrlAltDelBurstAction by added or modifying the following line in the "/etc/systemd/system.conf" configuration file: CtrlAltDelBurstAction=none Reload the daemon for this change to take effect > sudo systemctl daemon-reload
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040070
- Vuln IDs
-
- V-234991
- Rule IDs
-
- SV-234991r622137_rule
Checks: C-38179r619242_chk
Verify SUSE operating system local interactive users on the system have a home directory assigned. Check for missing local interactive user home directories with the following command: > sudo pwck -r user 'smithj': directory '/home/smithj' does not exist Ask the System Administrator (SA) if any users found without home directories are local interactive users. If the SA is unable to provide a response, check for users with a User Identifier (UID) of 1000 or greater with the following command: > awk -F: '($3>=1000)&&($1!="nobody"){print $1 ":" $3}' /etc/passwd If any interactive users do not have a home directory assigned, this is a finding.
Fix: F-38142r619243_fix
Assign home directories to all SUSE operating system local interactive users that currently do not have a home directory assigned. Assign a home directory to users via the usermod command: > sudo usermod -d /home/smithj smithj
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040080
- Vuln IDs
-
- V-234992
- Rule IDs
-
- SV-234992r622137_rule
Checks: C-38180r619245_chk
Verify the assigned home directory of all SUSE operating system local interactive users on the system exists. Check the home directory assignment for all local interactive non-privileged users on the system with the following command: > awk -F: '($3>=1000)&&($7 !~ /nologin/){print $1, $6}' /etc/passwd smithj /home/smithj Note: This may miss interactive users that have been assigned a privileged User Identifier (UID). Evidence of interactive use may be obtained from a number of log files containing system logon information. Check that all referenced home directories exist with the following command: > sudo pwck -r user 'smithj': directory '/home/smithj' does not exist If any home directories referenced in "/etc/passwd" are returned as not defined, this is a finding.
Fix: F-38143r619246_fix
Create home directories to all SUSE operating system local interactive users that currently do not have a home directory assigned. Use the following commands to create the user home directory assigned in "/etc/ passwd": Note: The example will be for the user smithj, who has a home directory of "/home/smithj", a UID of "smithj", and a Group Identifier (GID) of "users assigned" in "/etc/passwd". > sudo mkdir /home/smithj > sudo chown smithj /home/smithj > sudo chgrp users /home/smithj > sudo chmod 0750 /home/smithj
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040090
- Vuln IDs
-
- V-234993
- Rule IDs
-
- SV-234993r622137_rule
Checks: C-38181r619248_chk
Verify the assigned home directory of all SUSE operating system local interactive users has a mode of "0750" or less permissive. Check the home directory assignment for all non-privileged users on the system with the following command: Note: This may miss interactive users that have been assigned a privileged User Identifier (UID). Evidence of interactive use may be obtained from a number of log files containing system logon information. > ls -ld $(awk -F: '($3>=1000)&&($7 !~ /nologin/){print $6}' /etc/passwd) -rwxr-x--- 1 smithj users 18 Mar 5 17:06 /home/smithj If home directories referenced in "/etc/passwd" do not have a mode of "0750" or less permissive, this is a finding.
Fix: F-38144r619249_fix
Change the mode of SUSE operating system local interactive user's home directories to "0750". To change the mode of a local interactive user's home directory, use the following command: Note: The example will be for the user "smithj". > sudo chmod 0750 /home/smithj
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040100
- Vuln IDs
-
- V-234994
- Rule IDs
-
- SV-234994r622137_rule
Checks: C-38182r619251_chk
Verify the assigned home directory of all SUSE operating system local interactive users is group-owned by that user's primary GID. Check the home directory assignment for all non-privileged users on the system with the following command: Note: This may miss local interactive users that have been assigned a privileged User Identifier (UID). Evidence of interactive use may be obtained from a number of log files containing system logon information. The returned directory "/home/smithj" is used as an example. > awk -F: '($3>=1000)&&($7 !~ /nologin/){print $4, $6}' /etc/passwd) 250:/home/smithj Check the user's primary group with the following command: > grep users /etc/group users:x:250:smithj,jonesj,jacksons If the user home directory referenced in "/etc/passwd" is not group-owned by that user's primary GID, this is a finding.
Fix: F-38145r619252_fix
Change the group owner of a SUSE operating system local interactive user's home directory to the group found in "/etc/passwd". To change the group owner of a local interactive user's home directory, use the following command: Note: The example will be for the user "smithj", who has a home directory of "/home/smithj", and has a primary group of users. > sudo chgrp users /home/smithj
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040110
- Vuln IDs
-
- V-234995
- Rule IDs
-
- SV-234995r622137_rule
Checks: C-38183r619254_chk
Verify that all SUSE operating system local initialization files have a mode of "0740" or less permissive. Check the mode on all SUSE operating system local initialization files with the following command: Note: The example will be for the user "smithj", who has a home directory of "/home/smithj". > sudo ls -al /home/smithj/.* | more -rwxr-xr-x 1 smithj users 896 Mar 10 2011 .profile -rwxr-xr-x 1 smithj users 497 Jan 6 2007 .login -rwxr-xr-x 1 smithj users 886 Jan 6 2007 .something If any local initialization files have a mode more permissive than "0740", this is a finding.
Fix: F-38146r619255_fix
Set the mode of SUSE operating system local initialization files to "0740" with the following command: Note: The example will be for the smithj user, who has a home directory of "/home/smithj". > sudo chmod 0740 /home/smithj/.<INIT_FILE>
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040120
- Vuln IDs
-
- V-234996
- Rule IDs
-
- SV-234996r793060_rule
Checks: C-38184r793059_chk
Verify that all SUSE operating system local interactive user initialization files executable search path statements do not contain statements that will reference a working directory other than the user's home directory. Check the executable search path statement for all operating system local interactive user initialization files in the user's home directory with the following commands: Note: The example will be for the user "smithj", who has a home directory of "/home/smithj". > sudo grep -i path= /home/smithj/.* /home/smithj/.bash_profile:PATH=$PATH:$HOME/.local/bin:$HOME/bin If any local interactive user initialization files have executable search path statements that include directories outside of their home directory, and the additional path statements are not documented with the ISSO as an operational requirement, this is a finding.
Fix: F-38147r619258_fix
Edit the SUSE operating system local interactive user initialization files to change any PATH variable statements for executables that reference directories other than their home directory. If a local interactive user requires path variables to reference a directory owned by the application, it must be documented with the ISSO.
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040130
- Vuln IDs
-
- V-234997
- Rule IDs
-
- SV-234997r622137_rule
Checks: C-38185r619260_chk
Verify that SUSE operating system local initialization files do not execute world-writable programs. Verify that SUSE operating system local initialization files do not execute world-writable programs. Check the system for world-writable files with the following command: > sudo find / -xdev -perm -002 -type f -exec ls -ld {} \; For all files listed, check for their presence in the local initialization files with the following command: Note: The example will be for a system that is configured to create users' home directories in the "/home" directory. > sudo find /home/* -maxdepth 1 -type f -name \.\* -exec grep -H <file> {} \; If any local initialization files are found to reference world-writable files, this is a finding.
Fix: F-38148r619261_fix
Remove the references to these files in the local initialization scripts or remove the world-writable permission of files referenced by SUSE operating system local initialization scripts with the following command: > sudo chmod 0755 <file>
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040140
- Vuln IDs
-
- V-234998
- Rule IDs
-
- SV-234998r622137_rule
Checks: C-38186r619263_chk
Verify that SUSE operating system file systems that contain user home directories are mounted with the "nosuid" option. Print the currently active file system mount options of the file system(s) that contain the user home directories with the following command: > for X in `awk -F: '($3>=1000)&&($7 !~ /nologin/){print $6}' /etc/passwd`; do findmnt -nkT $X; done | sort -r /home /dev/mapper/system-home ext4 rw,nosuid,relatime,data=ordered If a file system containing user home directories is not mounted with the FSTYPE OPTION nosuid, this is a finding. Note: If a separate file system has not been created for the user home directories (user home directories are mounted under "/"), this is not a finding as the "nosuid" option cannot be used on the "/" system.
Fix: F-38149r619264_fix
Configure the SUSE operating system "/etc/fstab" file to use the "nosuid" option on file systems that contain user home directories for interactive users. Re-mount the filesystems. > sudo mount -o remount /home
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040150
- Vuln IDs
-
- V-234999
- Rule IDs
-
- SV-234999r622137_rule
Checks: C-38187r619266_chk
Verify SUSE operating system file systems used for removable media are mounted with the "nosuid" option. Check the file systems that are mounted at boot time with the following command: > more /etc/fstab UUID=2bc871e4-e2a3-4f29-9ece-3be60c835222 /mnt/usbflash vfat noauto,owner,ro,nosuid 0 0 If a file system found in "/etc/fstab" refers to removable media and it does not have the "nosuid" option set, this is a finding.
Fix: F-38150r619267_fix
Configure the SUSE operating system "/etc/fstab" file to use the "nosuid" option on file systems that are associated with removable media.
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040160
- Vuln IDs
-
- V-235000
- Rule IDs
-
- SV-235000r622137_rule
Checks: C-38188r619269_chk
Verify SUSE operating system file systems that are being NFS exported are mounted with the "nosuid" option. Find the file system(s) that contain the directories being exported with the following command: > grep nfs /etc/fstab UUID=e06097bb-cfcd-437b-9e4d-a691f5662a7d /store nfs rw,nosuid 0 0 If a file system found in "/etc/fstab" refers to NFS and it does not have the "nosuid" option set, this is a finding.
Fix: F-38151r619270_fix
Configure the SUSE operating system "/etc/fstab" file to use the "nosuid" option on file systems that are being exported via NFS.
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040170
- Vuln IDs
-
- V-235001
- Rule IDs
-
- SV-235001r622137_rule
Checks: C-38189r619272_chk
Verify the SUSE operating system file systems that are being NFS exported are mounted with the "noexec" option. Find the file system(s) that contain the directories being exported with the following command: > grep nfs /etc/fstab UUID=e06097bb-cfcd-437b-9e4d-a691f5662a7d /store nfs rw,noexec 0 0 If a file system found in "/etc/fstab" refers to NFS and it does not have the "noexec" option set, and use of NFS exported binaries is not documented with the Information System Security Officer (ISSO) as an operational requirement, this is a finding.
Fix: F-38152r619273_fix
Configure the SUSE operating system "/etc/fstab" file to use the "noexec" option on file systems that are being exported via NFS.
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040180
- Vuln IDs
-
- V-235002
- Rule IDs
-
- SV-235002r622137_rule
Checks: C-38190r619275_chk
Verify all SUSE operating system world-writable directories are group-owned by root, sys, bin, or an application group. Check the system for world-writable directories with the following command: > sudo find / -perm -002 -type d -exec ls -lLd {} \; drwxrwxrwt. 2 root root 40 Aug 26 13:07 /dev/mqueue drwxrwxrwt. 2 root root 220 Aug 26 13:23 /dev/shm drwxrwxrwt. 14 root root 4096 Aug 26 13:29 /tmp If any world-writable directories are not owned by root, sys, bin, or an application group associated with the directory, this is a finding.
Fix: F-38153r619276_fix
Change the group of the SUSE operating system world-writable directories to root with the following command: > sudo chgrp root <directory>
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040190
- Vuln IDs
-
- V-235003
- Rule IDs
-
- SV-235003r622137_rule
Checks: C-38191r619278_chk
Verify that SUSE operating system kernel core dumps are disabled unless needed. Check the status of the "kdump" service with the following command: > systemctl status kdump.service Loaded: not-found (Reason: No such file or directory) Active: inactive (dead) If the "kdump" service is active, ask the System Administrator if the use of the service is required and documented with the Information System Security Officer (ISSO). If the service is active and is not documented, this is a finding.
Fix: F-38154r619279_fix
If SUSE operating system kernel core dumps are not required, disable the "kdump" service with the following command: > sudo systemctl disable kdump.service If kernel core dumps are required, document the need with the ISSO.
- RMF Control
- CM-6
- Severity
- Low
- CCI
- CCI-000366
- Version
- SLES-15-040200
- Vuln IDs
-
- V-235004
- Rule IDs
-
- SV-235004r622137_rule
Checks: C-38192r619281_chk
Verify that a separate file system/partition has been created for SUSE operating system non-privileged local interactive user home directories. Check the home directory assignment for all non-privileged users (those with a UID greater than 1000) on the system with the following command: > awk -F: '($3>=1000)&&($7 !~ /nologin/){print $1, $3, $6, $7}' /etc/passwd adamsj 1002 /home/adamsj /bin/bash jacksonm 1003 /home/jacksonm /bin/bash smithj 1001 /home/smithj /bin/bash The output of the command will give the directory/partition that contains the home directories for the non-privileged users on the system (in this example, /home) and user's shell. All accounts with a valid shell (such as /bin/bash) are considered interactive users. Check that a file system/partition has been created for the non-privileged interactive users with the following command: Note: The partition of /home is used in the example. > grep /home /etc/fstab UUID=333ada18 /home ext4 noatime,nobarrier,nodev 1 2 If a separate entry for the file system/partition that contains the non-privileged interactive users' home directories does not exist, this is a finding.
Fix: F-38155r619282_fix
Create a separate file system/partition for SUSE operating system non-privileged local interactive user home directories. Migrate the non-privileged local interactive user home directories onto the separate file system/partition.
- RMF Control
- CM-6
- Severity
- Low
- CCI
- CCI-000366
- Version
- SLES-15-040210
- Vuln IDs
-
- V-235005
- Rule IDs
-
- SV-235005r622137_rule
Checks: C-38193r619284_chk
Verify that the SUSE operating system has a separate file system/partition for "/var". Check that a file system/partition has been created for "/var" with the following command: > grep /var /etc/fstab UUID=c274f65f /var ext4 noatime,nobarrier 1 2 If a separate entry for "/var" is not in use, this is a finding.
Fix: F-38156r619285_fix
Create a separate file system/partition on the SUSE operating system for "/var". Migrate "/var" onto the separate file system/partition.
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040220
- Vuln IDs
-
- V-235006
- Rule IDs
-
- SV-235006r622137_rule
Checks: C-38194r619287_chk
Verify the SUSE operating system is configured to not overwrite PAM configuration on package changes. Check that soft links between PAM configuration files are removed with the following command: > find /etc/pam.d/ -type l -iname "common-*" If any results are returned, this is a finding.
Fix: F-38157r619288_fix
Copy the PAM configuration files to their static locations and remove the SUSE operating system soft links for the PAM configuration files with the following command: > sudo sh -c 'for X in /etc/pam.d/common-*-pc; do cp -ivp --remove-destination $X ${X:0:-3}; done' Additional information on the configuration of multifactor authentication on the SUSE operating system can be found at https://www.suse.com/communities/blog/configuring-smart-card-authentication-suse-linux-enterprise/.
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040230
- Vuln IDs
-
- V-235007
- Rule IDs
-
- SV-235007r622137_rule
Checks: C-38195r619290_chk
Verify the SUSE operating system SSH daemon is configured to not allow authentication using "known hosts" authentication. To determine how the SSH daemon's "IgnoreUserKnownHosts" option is set, run the following command: > sudo grep -i IgnoreUserKnownHosts /etc/ssh/sshd_config IgnoreUserKnownHosts yes If the value is returned as "no", the returned line is commented out, or no output is returned, this is a finding.
Fix: F-38158r619291_fix
Configure the SUSE operating system SSH daemon to not allow authentication using "known hosts" authentication. Add the following line in "/etc/ssh/sshd_config", or uncomment the line and set the value to "yes": IgnoreUserKnownHosts yes
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040240
- Vuln IDs
-
- V-235008
- Rule IDs
-
- SV-235008r622137_rule
Checks: C-38196r619293_chk
Verify the SUSE operating system SSH daemon public host key files have mode "0644" or less permissive. Note: SSH public key files may be found in other directories on the system depending on the installation. The following command will find all SSH public key files on the system: > find /etc/ssh -name 'ssh_host*key.pub' -exec stat -c "%a %n" {} \; 644 /etc/ssh/ssh_host_rsa_key.pub 644 /etc/ssh/ssh_host_dsa_key.pub 644 /etc/ssh/ssh_host_ecdsa_key.pub 644 /etc/ssh/ssh_host_ed25519_key.pub If any file has a mode more permissive than "0644", this is a finding.
Fix: F-38159r619294_fix
Configure the SUSE operating system SSH daemon public host key files have mode "0644" or less permissive. Note: SSH public key files may be found in other directories on the system depending on the installation. Change the mode of public host key files under "/etc/ssh" to "0644" with the following command: > sudo chmod 0644 /etc/ssh/ssh_host*key.pub
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040250
- Vuln IDs
-
- V-235009
- Rule IDs
-
- SV-235009r880958_rule
Checks: C-38197r880956_chk
Verify the SUSE operating system SSH daemon private host key files have mode "0640" or less permissive. The following command will find all SSH private key files on the system: > sudo find / -name '*ssh_host*key' -exec ls -lL {} \; Check the mode of the private host key files under "/etc/ssh" file with the following command: > find /etc/ssh -name 'ssh_host*key' -exec stat -c "%a %n" {} \; 640 /etc/ssh/ssh_host_rsa_key 640 /etc/ssh/ssh_host_dsa_key 640 /etc/ssh/ssh_host_ecdsa_key 640 /etc/ssh/ssh_host_ed25519_key If any file has a mode more permissive than "0640", this is a finding.
Fix: F-38160r880957_fix
Configure the mode of the SUSE operating system SSH daemon private host key files under "/etc/ssh" to "0640" with the following command: > sudo chmod 0640 /etc/ssh/ssh_host*key
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040260
- Vuln IDs
-
- V-235010
- Rule IDs
-
- SV-235010r622137_rule
Checks: C-38198r619299_chk
Verify the SUSE operating system SSH daemon performs strict mode checking of home directory configuration files. Check that the SSH daemon performs strict mode checking of home directory configuration files with the following command: > sudo grep -i strictmodes /etc/ssh/sshd_config StrictModes yes If "StrictModes" is set to "no", is missing, or the returned line is commented out, this is a finding.
Fix: F-38161r619300_fix
Configure the SUSE operating system SSH daemon performs strict mode checking of home directory configuration files. Uncomment the "StrictModes" keyword in "/etc/ssh/sshd_config" and set the value to "yes": StrictModes yes
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040290
- Vuln IDs
-
- V-235013
- Rule IDs
-
- SV-235013r622137_rule
Checks: C-38201r619308_chk
Determine if X11Forwarding is disabled with the following command: Verify the SUSE operating system SSH daemon remote X forwarded connections for interactive users are disabled. Check that SSH remote X forwarded connections are disabled with the following command: > sudo grep -i x11forwarding /etc/ssh/sshd_config X11Forwarding no If the "X11Forwarding" keyword is set to "yes" and is not documented with the Information System Security Officer (ISSO) as an operational requirement, is missing, or is commented out, this is a finding.
Fix: F-38164r619309_fix
Configure the SUSE operating system SSH daemon to disable forwarded X connections for interactive users. Edit the "/etc/ssh/sshd_config" file to uncomment or add the line for the "X11Forwarding" keyword and set its value to "no" (this file may be named differently or be in a different location if using a version of SSH that is provided by a third-party vendor): X11Forwarding no
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040300
- Vuln IDs
-
- V-235014
- Rule IDs
-
- SV-235014r622137_rule
Checks: C-38202r619311_chk
Verify the SUSE operating system does not accept IPv4 source-routed packets. Check the value of the IPv4 accept source route variable with the following command: > sudo sysctl net.ipv4.conf.all.accept_source_route net.ipv4.conf.all.accept_source_route = 0 If the network parameter "ipv4.conf.all.accept_source_route" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38165r619312_fix
Configure the SUSE operating system to disable IPv4 source routing by running the following command as an administrator: > sudo sysctl -w net.ipv4.conf.all.accept_source_route=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv4.conf.all.accept_source_route=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040310
- Vuln IDs
-
- V-235015
- Rule IDs
-
- SV-235015r622137_rule
Checks: C-38203r619314_chk
Verify the SUSE operating system does not accept IPv6 source-routed packets. Check the value of the IPv6 accept source route variable with the following command: > sudo sysctl net.ipv6.conf.all.accept_source_route net.ipv6.conf.all.accept_source_route = 0 If the network parameter "ipv6.conf.all.accept_source_route" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38166r619315_fix
Configure the SUSE operating system to disable IPv6 source routing by running the following command as an administrator: > sudo sysctl -w net.ipv6.conf.all.accept_source_route=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv6.conf.all.accept_source_route=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040320
- Vuln IDs
-
- V-235016
- Rule IDs
-
- SV-235016r622137_rule
Checks: C-38204r619317_chk
Verify the SUSE operating system does not accept IPv4 source-routed packets by default. Check the value of the default IPv4 accept source route variable with the following command: > sudo sysctl net.ipv4.conf.default.accept_source_route net.ipv4.conf.default.accept_source_route = 0 If the network parameter "ipv4.conf.default.accept_source_route" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38167r619318_fix
Configure the SUSE operating system to disable IPv4 default source routing by running the following command as an administrator: > sudo sysctl -w net.ipv4.conf.default.accept_source_route=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv4.conf.default.accept_source_route=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040321
- Vuln IDs
-
- V-235017
- Rule IDs
-
- SV-235017r622137_rule
Checks: C-38205r619320_chk
Verify the SUSE operating system does not accept IPv6 source-routed packets by default. Check the value of the default IPv6 accept source route variable with the following command: > sudo sysctl net.ipv6.conf.default.accept_source_route net.ipv6.conf.default.accept_source_route = 0 If the network parameter "ipv6.conf.default.accept_source_route" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38168r619321_fix
Configure the SUSE operating system to disable IPv6 default source routing by running the following command as an administrator: > sudo sysctl -w net.ipv6.conf.default.accept_source_route=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv6.conf.default.accept_source_route=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040330
- Vuln IDs
-
- V-235018
- Rule IDs
-
- SV-235018r622137_rule
Checks: C-38206r619323_chk
Verify the SUSE operating system does not accept IPv4 ICMP redirect messages. Check the value of the IPv4 accept_redirects variable with the following command: > sudo sysctl net.ipv4.conf.all.accept_redirects net.ipv4.conf.all.accept_redirects =0 If the network parameter "ipv4.conf.all.accept_redirects" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38169r619324_fix
Configure the SUSE operating system to not accept IPv4 ICMP redirect messages by running the following command as an administrator: > sudo sysctl -w net.ipv4.conf.all.accept_redirects=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv4.conf.all.accept_redirects=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040340
- Vuln IDs
-
- V-235019
- Rule IDs
-
- SV-235019r622137_rule
Checks: C-38207r619326_chk
Verify the SUSE operating system does not accept IPv4 ICMP redirect messages by default. Check the value of the default IPv4 accept_redirects variable with the following command: > sudo sysctl net.ipv4.conf.default.accept_redirects net.ipv4.conf.default.accept_redirects = 0 If the network parameter "ipv4.conf.default.accept_redirects" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38170r619327_fix
Configure the SUSE operating system to not accept IPv4 ICMP redirect messages by default by running the following command as an administrator: > sudo sysctl -w net.ipv4.conf.default.accept_redirects=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv4.conf.default.accept_redirects=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040341
- Vuln IDs
-
- V-235020
- Rule IDs
-
- SV-235020r622137_rule
Checks: C-38208r619329_chk
Verify the SUSE operating system does not accept IPv6 ICMP redirect messages. Check the value of the IPv6 accept_redirects variable with the following command: > sudo sysctl net.ipv6.conf.all.accept_redirects net.ipv6.conf.all.accept_redirects =0 If the network parameter "ipv6.conf.all.accept_redirects" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38171r619330_fix
Configure the SUSE operating system to not accept IPv6 ICMP redirect messages by running the following command as an administrator: > sudo sysctl -w net.ipv6.conf.all.accept_redirects=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv6.conf.all.accept_redirects=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040350
- Vuln IDs
-
- V-235021
- Rule IDs
-
- SV-235021r622137_rule
Checks: C-38209r619332_chk
Verify the SUSE operating system does not allow IPv6 ICMP redirect messages by default. Check the value of the default IPv6 accept_redirects variable with the following command: > sudo sysctl net.ipv6.conf.default.accept_redirects net.ipv6.conf.default.accept_redirects = 0 If the network parameter "ipv6.conf.default.accept_redirects" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38172r619333_fix
Configure the SUSE operating system to not accept IPv6 ICMP redirect messages by default by running the following command as an administrator: > sudo sysctl -w net.ipv6.conf.default.accept_redirects=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv6.conf.default.accept_redirects=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040360
- Vuln IDs
-
- V-235022
- Rule IDs
-
- SV-235022r622137_rule
Checks: C-38210r619335_chk
Verify the SUSE operating system does not allow interfaces to perform IPv4 ICMP redirects by default. Check the value of the default IPv4 send_redirects variable with the following command: > sudo sysctl net.ipv4.conf.default.send_redirects net.ipv4.conf.default.send_redirects = 0 If the network parameter "ipv4.conf.default.send_redirects" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38173r619336_fix
Configure the SUSE operating system to not allow interfaces to perform IPv4 ICMP redirects by default by running the following command as an administrator: > sudo sysctl -w net.ipv4.conf.default.send_redirects=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv4.conf.default.send_redirects=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040370
- Vuln IDs
-
- V-235023
- Rule IDs
-
- SV-235023r622137_rule
Checks: C-38211r619338_chk
Verify the SUSE operating system does not allow interfaces to perform IPv4 ICMP redirects. Check the value of the IPv4 send_redirects variable with the following command: > sudo sysctl net.ipv4.conf.all.send_redirects net.ipv4.conf.all.send_redirects = 0 If the network parameter "ipv4.conf.all.send_redirects" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38174r619339_fix
Configure the SUSE operating system to not allow interfaces to perform IPv4 ICMP redirects by running the following command as an administrator: > sudo sysctl -w net.ipv4.conf.all.send_redirects=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv4.conf.all.send_redirects=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040380
- Vuln IDs
-
- V-235024
- Rule IDs
-
- SV-235024r622137_rule
Checks: C-38212r619341_chk
Verify the SUSE operating system is not performing IPv4 packet forwarding, unless the system is a router. Check to see if IPv4 forwarding is disabled using the following command: > sudo sysctl net.ipv4.ip_forward net.ipv4.ip_forward = 0 If the network parameter "ipv4.ip_forward" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38175r619342_fix
Configure the SUSE operating system to not performing IPv4 packet forwarding by running the following command as an administrator: > sudo sysctl -w net.ipv4.ip_forward=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv4.ip_forward=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040381
- Vuln IDs
-
- V-235025
- Rule IDs
-
- SV-235025r622137_rule
Checks: C-38213r619344_chk
Verify the SUSE operating system is not performing IPv6 packet forwarding, unless the system is a router. Check to see if IPv6 forwarding is enabled using the following command: > sudo sysctl net.ipv6.conf.all.forwarding net.ipv6.conf.all.forwarding = 0 If the network parameter "ipv6.conf.all.forwarding" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38176r619345_fix
Configure the SUSE operating system to not performing IPv6 packet forwarding by running the following command as an administrator: > sudo sysctl -w net.ipv6.conf.all.forwarding=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv6.conf.all.forwarding=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040382
- Vuln IDs
-
- V-235026
- Rule IDs
-
- SV-235026r622137_rule
Checks: C-38214r619347_chk
Verify the SUSE operating system is not performing IPv6 packet forwarding by default, unless the system is a router. Check to see if IPv6 forwarding is disabled by default using the following command: > sudo sysctl net.ipv6.conf.default.forwarding net.ipv6.conf.default.forwarding = 0 If the network parameter "ipv6.conf.default.forwarding" is not equal to "0" or nothing is returned, this is a finding.
Fix: F-38177r619348_fix
Configure the SUSE operating system to not performing IPv6 packet forwarding by default by running the following command as an administrator: > sudo sysctl -w net.ipv6.conf.default.forwarding=0 If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf": > sudo sh -c 'echo "net.ipv6.conf.default.forwarding=0" >> /etc/sysctl.d/99-stig.conf' > sudo sysctl --system
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040390
- Vuln IDs
-
- V-235027
- Rule IDs
-
- SV-235027r622137_rule
Checks: C-38215r619350_chk
Verify the SUSE operating system network interfaces are not in promiscuous mode unless approved by the ISSO and documented. Check for the status with the following command: > ip link | grep -i promisc If network interfaces are found on the system in promiscuous mode and their use has not been approved by the ISSO and documented, this is a finding.
Fix: F-38178r619351_fix
Configure the SUSE operating system network interfaces to turn off promiscuous mode unless approved by the ISSO and documented. Set the promiscuous mode of an interface to off with the following command: > sudo ip link set dev <devicename> promisc off
- RMF Control
- SI-2
- Severity
- Medium
- CCI
- CCI-001230
- Version
- SLES-15-040400
- Vuln IDs
-
- V-235028
- Rule IDs
-
- SV-235028r622137_rule
Checks: C-38216r619353_chk
Verify that all SUSE operating system files and directories on the system have a valid owner. Check the owner of all files and directories with the following command: Note: The value after -fstype must be replaced with the filesystem type. XFS is used as an example. > sudo find / -fstype xfs -nouser If any files on the system do not have an assigned owner, this is a finding.
Fix: F-38179r619354_fix
Either remove all files and directories from the SUSE operating system that do not have a valid user, or assign a valid user to all unowned files and directories on the system with the "chown" command: > sudo chown <user> <file>
- RMF Control
- SI-2
- Severity
- Medium
- CCI
- CCI-001230
- Version
- SLES-15-040410
- Vuln IDs
-
- V-235029
- Rule IDs
-
- SV-235029r622137_rule
Checks: C-38217r619356_chk
Verify all SUSE operating system files and directories on the system have a valid group. Check the owner of all files and directories with the following command: Note: The value after -fstype must be replaced with the filesystem type. XFS is used as an example. > sudo find / -fstype xfs -nogroup If any files on the system do not have an assigned group, this is a finding.
Fix: F-38180r619357_fix
Either remove all files and directories from the SUSE operating system that do not have a valid group, or assign a valid group to all files and directories on the system with the "chgrp" command: > sudo chgrp <group> <file>
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-040420
- Vuln IDs
-
- V-235030
- Rule IDs
-
- SV-235030r622137_rule
Checks: C-38218r619359_chk
Verify the SUSE operating system defines default permissions for all authenticated users in such a way that the users can only read and modify their own files. Check the system default permissions with the following command: > grep -i "^umask" /etc/login.defs UMASK 077 If the "UMASK" variable is set to "000", the severity is raised to a CAT I, and this is a finding. If the value of "UMASK" is not set to "077", or "UMASK" is missing, this is a finding.
Fix: F-38181r619360_fix
Configure the SUSE operating system to define the default permissions for all authenticated users in such a way that the users can only read and modify their own files. Add or edit the "UMASK" parameter in the "/etc/login.defs" file to match the example below: UMASK 077
- RMF Control
- CM-6
- Severity
- High
- CCI
- CCI-000366
- Version
- SLES-15-040430
- Vuln IDs
-
- V-235031
- Rule IDs
-
- SV-235031r877377_rule
Checks: C-38219r619362_chk
Note: If a graphical user interface is not installed, this requirement is Not Applicable. Verify the SUSE operating system does not allow unattended or automatic logon via the GUI. Check that unattended or automatic login is disabled with the following commands: > grep -i ^DISPLAYMANAGER_AUTOLOGIN /etc/sysconfig/displaymanager DISPLAYMANAGER_AUTOLOGIN="" > grep -i ^DISPLAYMANAGER_PASSWORD_LESS_LOGIN /etc/sysconfig/displaymanager DISPLAYMANAGER_PASSWORD_LESS_LOGIN="no" If the "DISPLAYMANAGER_AUTOLOGIN" parameter includes a username or the "DISPLAYMANAGER_PASSWORD_LESS_LOGIN" If parameter is not set to "no", this is a finding.
Fix: F-38182r619363_fix
Note: If a graphical user interface is not installed, this requirement is Not Applicable. Configure the SUSE operating system GUI to not allow unattended or automatic logon to the system. Add or edit the following lines in the "/etc/sysconfig/displaymanager" configuration file: DISPLAYMANAGER_AUTOLOGIN="" DISPLAYMANAGER_PASSWORD_LESS_LOGIN="no"
- RMF Control
- CM-6
- Severity
- High
- CCI
- CCI-000366
- Version
- SLES-15-040440
- Vuln IDs
-
- V-235032
- Rule IDs
-
- SV-235032r877377_rule
Checks: C-38220r619365_chk
Verify the SUSE operating system disables unattended or automatic logon via SSH. Check that unattended or automatic logon via SSH is disabled with the following command: > sudo egrep '(Permit(.*?)(Passwords|Environment))' /etc/ssh/sshd_config PermitEmptyPasswords no PermitUserEnvironment no If "PermitEmptyPasswords" or "PermitUserEnvironment" keywords are not set to "no", are missing completely, or are commented out, this is a finding.
Fix: F-38183r619366_fix
Configure the SUSE operating system disables unattended or automatic logon via SSH. Add or edit the following lines in the "/etc/ssh/sshd_config" file: PermitEmptyPasswords no PermitUserEnvironment no
- RMF Control
- CM-6
- Severity
- Medium
- CCI
- CCI-000366
- Version
- SLES-15-020099
- Vuln IDs
-
- V-251723
- Rule IDs
-
- SV-251723r833006_rule
Checks: C-55160r833004_chk
Note: If the "include" and "includedir" directives are not present in the /etc/sudoers file, this requirement is not applicable. Verify the operating system specifies only the default "include" directory for the /etc/sudoers file with the following command: > sudo grep include /etc/sudoers @includedir /etc/sudoers.d If the results are not "/etc/sudoers.d" or additional files or directories are specified, this is a finding. Verify the operating system does not have nested "include" files or directories within the /etc/sudoers.d directory with the following command: > sudo grep -r include /etc/sudoers.d If results are returned, this is a finding.
Fix: F-55114r833005_fix
Configure the /etc/sudoers file to only include the /etc/sudoers.d directory. Edit the /etc/sudoers file with the following command: > sudo visudo Add or modify the following line: @includedir /etc/sudoers.d
- RMF Control
- IA-11
- Severity
- Medium
- CCI
- CCI-002038
- Version
- SLES-15-020104
- Vuln IDs
-
- V-251724
- Rule IDs
-
- SV-251724r854274_rule
Checks: C-55161r854272_chk
Verify the operating system is not be configured to bypass password requirements for privilege escalation. Check the configuration of the "/etc/pam.d/sudo" file with the following command: $ sudo grep pam_succeed_if /etc/pam.d/sudo If any occurrences of "pam_succeed_if" are returned from the command, this is a finding.
Fix: F-55115r854273_fix
Configure the operating system to require users to supply a password for privilege escalation. Check the configuration of the "/etc/ pam.d/sudo" file with the following command: $ sudo vi /etc/pam.d/sudo Remove any occurrences of "pam_succeed_if" in the file.
- RMF Control
- CM-6
- Severity
- High
- CCI
- CCI-000366
- Version
- SLES-15-020181
- Vuln IDs
-
- V-251725
- Rule IDs
-
- SV-251725r809487_rule
Checks: C-55162r809485_chk
Check the "/etc/shadow" file for blank passwords with the following command: $ sudo awk -F: '!$2 {print $1}' /etc/shadow If the command returns any results, this is a finding.
Fix: F-55116r809486_fix
Configure all accounts on the system to have a password or lock the account with the following commands: Perform a password reset: $ sudo passwd [username] Lock an account: $ sudo passwd -l [username]
- RMF Control
- AC-17
- Severity
- Medium
- CCI
- CCI-001453
- Version
- SLES-15-040450
- Vuln IDs
-
- V-255920
- Rule IDs
-
- SV-255920r880961_rule
Checks: C-59597r880959_chk
Verify that the SSH server is configured to use only FIPS-validated key exchange algorithms: $ sudo grep -i kexalgorithms /etc/ssh/sshd_config KexAlgorithms ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256 If "KexAlgorithms" is not configured, is commented out, or does not contain only the algorithms "ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256" in exact order, this is a finding.
Fix: F-59540r880960_fix
Configure the SSH server to use only FIPS-validated key exchange algorithms by adding or modifying the following line in "/etc/ssh/sshd_config": KexAlgorithms ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256 Restart the "sshd" service for changes to take effect: $ sudo systemctl restart sshd
- RMF Control
- SC-4
- Severity
- Low
- CCI
- CCI-001090
- Version
- SLES-15-010375
- Vuln IDs
-
- V-255921
- Rule IDs
-
- SV-255921r880964_rule
Checks: C-59598r880962_chk
Verify the operating system is configured to restrict access to the kernel message buffer with the following commands: $ sudo sysctl kernel.dmesg_restrict kernel.dmesg_restrict = 1 If "kernel.dmesg_restrict" is not set to "1" or is missing, this is a finding. Check that the configuration files are present to enable this kernel parameter: $ sudo grep -r kernel.dmesg_restrict /run/sysctl.d/* /etc/sysctl.d/* /usr/local/lib/sysctl.d/* /usr/lib/sysctl.d/* /lib/sysctl.d/* /etc/sysctl.conf 2> /dev/null /etc/sysctl.conf:kernel.dmesg_restrict = 1 /etc/sysctl.d/99-sysctl.conf:kernel.dmesg_restrict = 1 If "kernel.dmesg_restrict" is not set to "1", is missing or commented out, this is a finding. If conflicting results are returned, this is a finding.
Fix: F-59541r880963_fix
Configure the operating system to restrict access to the kernel message buffer. Set the system to the required kernel parameter by adding or modifying the following line in /etc/sysctl.conf or a config file in the /etc/sysctl.d/ directory: kernel.dmesg_restrict = 1 Remove any configurations that conflict with the above from the following locations: /run/sysctl.d/ /etc/sysctl.d/ /usr/local/lib/sysctl.d/ /usr/lib/sysctl.d/ /lib/sysctl.d/ /etc/sysctl.conf Reload settings from all system configuration files with the following command: $ sudo sysctl --system
- RMF Control
- SI-6
- Severity
- Medium
- CCI
- CCI-002696
- Version
- SLES-15-010419
- Vuln IDs
-
- V-255922
- Rule IDs
-
- SV-255922r880967_rule
Checks: C-59599r880965_chk
Verify that Advanced Intrusion Detection Environment (AIDE) is installed and verifies the correct operation of all security functions. Check that the AIDE package is installed with the following command: $ sudo zypper if aide | grep "Installed" Installed: Yes If AIDE is not installed, ask the System Administrator how file integrity checks are performed on the system. If there is no application installed to perform integrity checks, this is a finding. If AIDE is installed, check if it has been initialized with the following command: $ sudo aide --check If the output is "Couldn't open file /var/lib/aide/aide.db for reading", this is a finding.
Fix: F-59542r880966_fix
Install AIDE, initialize it, and perform a manual check. Install AIDE: $ sudo zipper in aide Initialize it (this may take a few minutes): $ sudo aide -i The new database will need to be renamed to be read by AIDE: $ sudo mv /var/lib/aide/aide.db.new /var/lib/aide/aide.db Perform a manual check: $ sudo aide --check Example output: Summary: Total number of files: 140621 Added files: 1 Removed files: 1 Changed files: 0 Done.
- RMF Control
- AC-2
- Severity
- Medium
- CCI
- CCI-001682
- Version
- SLES-15-020061
- Vuln IDs
-
- V-256982
- Rule IDs
-
- SV-256982r903127_rule
Checks: C-60660r902844_chk
Verify temporary accounts have been provisioned with an expiration date of 72 hours. For every existing temporary account, run the following command to obtain its account expiration information: > sudo chage -l <temporary_account_name> | grep -i "account expires" Verify each of these accounts has an expiration date set within 72 hours. If any temporary accounts have no expiration date set or do not expire within 72 hours, this is a finding.
Fix: F-60602r902845_fix
Configure the operating system to expire temporary accounts after 72 hours with the following command: > sudo chage -E $(date -d +3days +%Y-%m-%d) <temporary_account_name>
- RMF Control
- CM-3
- Severity
- Medium
- CCI
- CCI-001744
- Version
- SLES-15-010418
- Vuln IDs
-
- V-256983
- Rule IDs
-
- SV-256983r902849_rule
Checks: C-60661r902847_chk
Verify that the operating system is configured to allow sending email notifications. Note: The "mailx" package provides the "mail" command that is used to send email messages. Verify that the "mailx" package is installed on the system: > sudo zypper se mailx i | mailx | A MIME-Capable Implementation of the mailx Command | package If "mailx" package is not installed, this is a finding.
Fix: F-60603r902848_fix
Install the "mailx" package on the system: > sudo zypper install mailx