Canonical Ubuntu 18.04 LTS Security Technical Implementation Guide

This Security Technical Implementation Guide is published as a tool to improve the security of Department of Defense (DoD) information systems. The requirements are derived from the National Institute of Standards and Technology (NIST) 800-53 and related documents. Comments or proposed revisions to this document should be sent via email to the following address: [email protected]

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Version / Release: V1R1

Published: 2020-04-04

Updated At: 2020-05-11 21:03:26

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Medium 0 0 0 0
High 0 0 0 0
Drop CKL or SCAP (XCCDF) results here.

    Vuln Rule Version CCI Severity Title Description Status Finding Details Comments
    SV-109623r1_rule UBTU-18-010000 CCI-000213 HIGH Ubuntu operating systems booted with a BIOS must require authentication upon booting into single-user and maintenance modes. To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods
    SV-109625r1_rule UBTU-18-010001 CCI-000213 HIGH Ubuntu operating systems booted with United Extensible Firmware Interface (UEFI) implemented must require authentication upon booting into single-user mode and maintenance. To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods
    SV-109627r1_rule UBTU-18-010002 CCI-001464 MEDIUM The Ubuntu operating system must initiate session audits at system startup. If auditing is enabled late in the startup process, the actions of some startup processes may not be audited. Some audit systems also maintain state information only available if auditing is enabled before a given process is created.
    SV-109629r1_rule UBTU-18-010003 CCI-001199 MEDIUM Ubuntu operating systems handling data requiring data at rest protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. Information at rest refers to the state of information when it is located on a secondary storage device (e.g., disk drive and tape drive, when used for backups) within an operating system. This requirement addresses protection of user-generated data, as
    SV-109631r1_rule UBTU-18-010005 CCI-002450 HIGH The Ubuntu operating system must implement NIST FIPS-validated cryptography to protect classified information and for the following: to provision digital signatures, to generate cryptographic hashes, and to protect unclassified information requiring confidentiality and cryptographic protection in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards. Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The operating system must implement cryptographic modules adhering to the higher standards approved by the federal government since this provide
    SV-109633r1_rule UBTU-18-010006 CCI-001855 LOW The Ubuntu operating system must immediately notify the SA and ISSO (at a minimum) when allocated audit record storage volume reaches 75% of the repository maximum audit record storage capacity. If security personnel are not notified immediately when storage volume reaches 75% utilization, they are unable to plan for audit record storage capacity expansion.
    SV-109635r1_rule UBTU-18-010007 CCI-001851 LOW The Ubuntu operating system audit event multiplexor must be configured to off-load audit logs onto a different system in real time, if the system is interconnected. Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity.
    SV-109637r1_rule UBTU-18-010008 CCI-001851 LOW The Ubuntu operating system must have a crontab script running weekly to off-load audit events of standalone systems. Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity.
    SV-109639r1_rule UBTU-18-010016 CCI-001749 MEDIUM Advance package Tool (APT) must be configured to prevent the installation of patches, service packs, device drivers, or Ubuntu operating system components without verification they have been digitally signed using a certificate that is recognized and approved by the organization. Changes to any software components can have significant effects on the overall security of the Ubuntu operating system. This requirement ensures the software has not been tampered with and that it has been provided by a trusted vendor. Accordingly, patch
    SV-109641r1_rule UBTU-18-010017 CCI-002617 MEDIUM The Ubuntu operating system must be configured so that Advance package Tool (APT) removes all software components after updated versions have been installed. Previous versions of software components that are not removed from the information system after updates have been installed may be exploited by adversaries. Some information technology products may remove older versions of software automatically from the
    SV-109643r1_rule UBTU-18-010018 CCI-000381 HIGH The Ubuntu operating system must not have the Network Information Service (NIS) package installed. Removing the Network Information Service (NIS) package decreases the risk of the accidental (or intentional) activation of NIS or NIS+ services.
    SV-109645r1_rule UBTU-18-010019 CCI-000381 HIGH The Ubuntu operating system must not have the rsh-server package installed. It is detrimental for Ubuntu operating systems to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase
    SV-109649r1_rule UBTU-18-010021 CCI-001233 MEDIUM The Ubuntu operating system must deploy Endpoint Security for Linux Threat Prevention (ENSLTP). Without the use of automated mechanisms to scan for security flaws on a continuous and/or periodic basis, the operating system or other system components may remain vulnerable to the exploits presented by undetected software flaws. To support this requir
    SV-109651r1_rule UBTU-18-010022 CCI-001665 MEDIUM The Ubuntu operating system must be configured to preserve log records from failure events. Failure to a known state can address safety or security in accordance with the mission/business needs of the organization. Failure to a known secure state helps prevent a loss of confidentiality, integrity, or availability in the event of a failure of the
    SV-109653r1_rule UBTU-18-010023 CCI-002314 MEDIUM The Ubuntu operating system must have an application firewall installed in order to control remote access methods. Remote access services, such as those providing remote access to network devices and information systems, which lack automated control capabilities, increase risk and make remote user access management difficult at best. Remote access is access to DoD no
    SV-109655r1_rule UBTU-18-010025 CCI-001851 LOW The Ubuntu operating system audit event multiplexor must be configured to off-load audit logs onto a different system or storage media from the system being audited. Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity.
    SV-109657r1_rule UBTU-18-010030 CCI-002007 LOW The Ubuntu operating system must be configured such that Pluggable Authentication Module (PAM) prohibits the use of cached authentications after one day. If cached authentication information is out-of-date, the validity of the authentication information may be questionable.
    SV-109659r1_rule UBTU-18-010031 CCI-000366 LOW The Ubuntu operating system must enforce a delay of at least 4 seconds between logon prompts following a failed logon attempt. Limiting the number of logon attempts over a certain time interval reduces the chances that an unauthorized user may gain access to an account.
    SV-109661r1_rule UBTU-18-010032 CCI-000366 LOW The Ubuntu operating system must display the date and time of the last successful account logon upon logon. Configuring the Ubuntu operating system to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baseline across DoD that reflects the most restrictiv
    SV-109663r1_rule UBTU-18-010033 CCI-000044 MEDIUM The Ubuntu operating system must be configured so that three consecutive invalid logon attempts by a user locks the account. By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.
    SV-109665r1_rule UBTU-18-010035 CCI-000050 MEDIUM The Ubuntu operating system must display the Standard Mandatory DoD Notice and Consent Banner before granting local access to the system via a graphical user logon. The banner must be acknowledged by the user prior to allowing the user access to the operating system. This provides assurance that the user has seen the message and accepted the conditions for access. If the consent banner is not acknowledged by the user
    SV-109667r1_rule UBTU-18-010036 CCI-000770 MEDIUM The Ubuntu operating system must prevent direct login into the root account. To assure individual accountability and prevent unauthorized access, organizational users must be individually identified and authenticated. A group authenticator is a generic account used by multiple individuals. Use of a group authenticator alone does
    SV-109669r1_rule UBTU-18-010037 CCI-001084 HIGH The Ubuntu operating system must be configured so that only users who need access to security functions are part of the sudo group. An isolation boundary provides access control and protects the integrity of the hardware, software, and firmware that perform security functions. Security functions are the hardware, software, and/or firmware of the information system responsible for enf
    SV-109671r1_rule UBTU-18-010038 CCI-000048 MEDIUM The Ubuntu operating system must display the Standard Mandatory DoD Notice and Consent Banner before granting any publically accessible connection to the system. Display of a standardized and approved use notification before granting access to the Ubuntu operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regul
    SV-109673r1_rule UBTU-18-010039 CCI-002238 LOW The Ubuntu operating system must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts. By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced. Limits are imposed by locking the account.
    SV-109675r1_rule UBTU-18-010100 CCI-000192 LOW The Ubuntu operating system must enforce password complexity by requiring that at least one upper-case character be used. Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password
    SV-109677r1_rule UBTU-18-010101 CCI-000193 LOW The Ubuntu operating system must enforce password complexity by requiring that at least one lower-case character be used. Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password
    SV-109679r1_rule UBTU-18-010102 CCI-000194 LOW The Ubuntu operating system must enforce password complexity by requiring that at least one numeric character be used. Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password
    SV-109681r1_rule UBTU-18-010103 CCI-000195 LOW The Ubuntu operating system must require the change of at least 8 characters when passwords are changed. If the Ubuntu operating system allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for attempts at guessing and brute-force attacks. The number
    SV-109683r1_rule UBTU-18-010104 CCI-000196 MEDIUM The Ubuntu operating system must encrypt all stored passwords with a FIPS 140-2 approved cryptographic hashing algorithm. Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.
    SV-109685r1_rule UBTU-18-010105 CCI-000197 HIGH The Ubuntu operating system must not have the telnet package installed. Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.
    SV-109687r1_rule UBTU-18-010106 CCI-000198 LOW The Ubuntu operating system must enforce 24 hours/1 day as the minimum password lifetime. Passwords for new users must have a 24 hours/1 day minimum password lifetime restriction. Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, then the password could be repeate
    SV-109689r1_rule UBTU-18-010107 CCI-000199 LOW The Ubuntu operating system must enforce a 60-day maximum password lifetime restriction. Passwords for new users must have a 60-day maximum password lifetime restriction. Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the operating system does not limit the lifetime of passwords and force users to change their passwords, there is the risk that the op
    SV-109691r1_rule UBTU-18-010108 CCI-000200 LOW The Ubuntu operating system must prohibit password reuse for a minimum of five generations. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. If the information system or application allows the user to consecutively reuse their password when that password
    SV-109693r1_rule UBTU-18-010109 CCI-000205 MEDIUM The Ubuntu operating system must enforce a minimum 15-character password length. The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and bru
    SV-109695r1_rule UBTU-18-010110 CCI-000803 MEDIUM The Ubuntu operating system must employ a FIPS 140-2 approved cryptographic hashing algorithms for all created and stored passwords. The Ubuntu operating system must use a FIPS-compliant hashing algorithm to securely store the password. The FIPS-compliant hashing algorithm parameters must be selected in order to harden the system against offline attacks.
    SV-109697r1_rule UBTU-18-010112 CCI-002041 MEDIUM The Ubuntu operating system must allow the use of a temporary password for system logons with an immediate change to a permanent password. Without providing this capability, an account may be created without a password. Non-repudiation cannot be guaranteed once an account is created if a user is not forced to change the temporary password upon initial logon. Temporary passwords are typicall
    SV-109699r1_rule UBTU-18-010113 CCI-000366 MEDIUM The Ubuntu operating system must prevent the use of dictionary words for passwords. If the Ubuntu operating system allows the user to select passwords based on dictionary words, then this increases the chances of password compromise by increasing the opportunity for successful guesses and brute-force attacks.
    SV-109701r1_rule UBTU-18-010114 CCI-002038 MEDIUM The Ubuntu operating system must require users to re-authenticate for privilege escalation and changing roles. Without re-authentication, users may access resources or perform tasks for which they do not have authorization. When the Ubuntu operating system provides the capability to escalate a functional capability or change security roles, it is critical the us
    SV-109703r1_rule UBTU-18-010116 CCI-000366 MEDIUM The Ubuntu Operating system must be configured so that when passwords are changed or new passwords are established, pwquality must be used. Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. "pwquality
    SV-109705r1_rule UBTU-18-010120 CCI-001090 MEDIUM The Ubuntu operating system must set a sticky bit on all public directories to prevent unauthorized and unintended information transferred via shared system resources. Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of processes acting on behalf of prior users/roles) from bein
    SV-109707r1_rule UBTU-18-010121 CCI-001312 MEDIUM The Ubuntu operating system must generate error messages that provide information necessary for corrective actions without revealing information that could be exploited by adversaries. Any operating system providing too much information in error messages risks compromising the data and security of the structure, and content of error messages needs to be carefully considered by the organization. Organizations carefully consider the stru
    SV-109709r1_rule UBTU-18-010122 CCI-001314 MEDIUM The Ubuntu operating system must configure the /var/log directory to be group-owned by syslog. Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the operating system or platform. Additionally, Personally Identifiable Information (
    SV-109711r1_rule UBTU-18-010123 CCI-001314 MEDIUM The Ubuntu operating system must configure the /var/log directory to be owned by root. Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the operating system or platform. Additionally, Personally Identifiable Information (
    SV-109713r1_rule UBTU-18-010124 CCI-001314 MEDIUM The Ubuntu operating system must configure the /var/log directory to have mode 0750 or less permissive. Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the operating system or platform. Additionally, Personally Identifiable Information (
    SV-109715r1_rule UBTU-18-010125 CCI-001314 MEDIUM The Ubuntu operating system must configure the /var/log/syslog file to be group-owned by adm. Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the operating system or platform. Additionally, Personally Identifiable Information (
    SV-109717r1_rule UBTU-18-010126 CCI-001314 MEDIUM The Ubuntu operating system must configure /var/log/syslog file to be owned by syslog. Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the operating system or platform. Additionally, Personally Identifiable Information (
    SV-109719r1_rule UBTU-18-010127 CCI-001314 MEDIUM The Ubuntu operating system must configure /var/log/syslog file with mode 0640 or less permissive. Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the operating system or platform. Additionally, Personally Identifiable Information (
    SV-109721r1_rule UBTU-18-010128 CCI-001493 MEDIUM The Ubuntu operating system must configure audit tools with a mode of 0755 or less permissive. Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information. The Ubuntu operating system provi
    SV-109723r1_rule UBTU-18-010129 CCI-001493 MEDIUM The Ubuntu operating system must configure audit tools to be owned by root. Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information. The Ubuntu operating system provi
    SV-109725r1_rule UBTU-18-010130 CCI-001493 MEDIUM The Ubuntu operating system must configure the audit tools to be group-owned by root. Protecting audit information also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit information. The Ubuntu operating system provi
    SV-109727r1_rule UBTU-18-010133 CCI-001499 MEDIUM The Ubuntu operating system library files must have mode 0755 or less permissive. If the operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requirement a
    SV-109729r1_rule UBTU-18-010134 CCI-001499 MEDIUM The Ubuntu operating system library directories must have mode 0755 or less permissive. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109731r1_rule UBTU-18-010135 CCI-001499 MEDIUM The Ubuntu operating system library files must be owned by root. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109733r1_rule UBTU-18-010136 CCI-001499 MEDIUM The Ubuntu operating system library directories must be owned by root. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109735r1_rule UBTU-18-010137 CCI-001499 MEDIUM The Ubuntu operating system library files must be group-owned by root. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109737r1_rule UBTU-18-010138 CCI-001499 MEDIUM The Ubuntu operating system library directories must be group-owned by root. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109739r1_rule UBTU-18-010139 CCI-001499 MEDIUM The Ubuntu operating system must have system commands set to a mode of 0755 or less permissive. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109741r1_rule UBTU-18-010140 CCI-001499 MEDIUM The Ubuntu operating system must have directories that contain system commands set to a mode of 0755 or less permissive. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109743r1_rule UBTU-18-010141 CCI-001499 MEDIUM The Ubuntu operating system must have system commands owned by root. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109745r1_rule UBTU-18-010142 CCI-001499 MEDIUM The Ubuntu operating system must have directories that contain system commands owned by root. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109747r1_rule UBTU-18-010143 CCI-001499 MEDIUM The Ubuntu operating system must have system commands group-owned by root. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109749r1_rule UBTU-18-010144 CCI-001499 MEDIUM The Ubuntu operating system must have directories that contain system commands group-owned by root. If the Ubuntu operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requir
    SV-109751r1_rule UBTU-18-010145 CCI-001619 LOW The Ubuntu operating system must enforce password complexity by requiring that at least one special character be used. Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity or strength is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password co
    SV-109753r1_rule UBTU-18-010150 CCI-000366 HIGH The Ubuntu Operating system must disable the x86 Ctrl-Alt-Delete key sequence if a graphical user interface is installed. A locally logged-on user who presses Ctrl-Alt-Delete, when at the console, can reboot the system. If accidentally pressed, as could happen in the case of a mixed OS environment, this can create the risk of short-term loss of availability of systems due to
    SV-109755r1_rule UBTU-18-010151 CCI-000366 HIGH The Ubuntu Operating system must disable the x86 Ctrl-Alt-Delete key sequence. A locally logged-on user who presses Ctrl-Alt-Delete, when at the console, can reboot the system. If accidentally pressed, as could happen in the case of a mixed OS environment, this can create the risk of short-term loss of availability of systems due to
    SV-109757r1_rule UBTU-18-010201 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for the use and modification of the tallylog file. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109759r1_rule UBTU-18-010202 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for the use and modification of faillog file. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109761r1_rule UBTU-18-010203 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for the use and modification of the lastlog file. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109763r1_rule UBTU-18-010237 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for privileged activities or other system-level access. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109765r1_rule UBTU-18-010238 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for the /var/log/wtmp file. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109767r1_rule UBTU-18-010239 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for the /var/run/wtmp file. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109769r1_rule UBTU-18-010240 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for the /var/log/btmp file. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109771r1_rule UBTU-18-010244 CCI-000018 MEDIUM The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/passwd. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109773r1_rule UBTU-18-010245 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/group. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109775r1_rule UBTU-18-010246 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/gshadow. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109777r1_rule UBTU-18-010247 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/shadow. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109779r1_rule UBTU-18-010248 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/security/opasswd. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109781r1_rule UBTU-18-010250 CCI-000131 MEDIUM The Ubuntu operating system must produce audit records and reports containing information to establish when, where, what type, the source, and the outcome for all DoD-defined auditable events and actions in near real time. Without establishing the when, where, type, source, and outcome of events that occurred, it would be difficult to establish, correlate, and investigate the events leading up to an outage or attack. Without the capability to generate audit records, it wou
    SV-109783r1_rule UBTU-18-010300 CCI-000139 MEDIUM The Ubuntu operating system must alert the ISSO and SA (at a minimum) in the event of an audit processing failure. It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability, and system oper
    SV-109785r1_rule UBTU-18-010301 CCI-000140 MEDIUM The Ubuntu operating system must shut down by default upon audit failure (unless availability is an overriding concern). It is critical that when the Ubuntu operating system is at risk of failing to process audit logs as required, it takes action to mitigate the failure. Audit processing failures include: software/hardware errors; failures in the audit capturing mechanisms;
    SV-109787r1_rule UBTU-18-010305 CCI-000162 MEDIUM The Ubuntu operating system must be configured so that audit log files cannot be read or write-accessible by unauthorized users. If audit information were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. To ensure the veracity of audit information, the operating system must protect aud
    SV-109789r1_rule UBTU-18-010306 CCI-000162 MEDIUM The Ubuntu operating system must permit only authorized accounts ownership of the audit log files. If audit information were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. To ensure the veracity of audit information, the operating system must protect aud
    SV-109791r1_rule UBTU-18-010307 CCI-000162 MEDIUM The Ubuntu operating system must permit only authorized groups to own the audit log files. If audit information were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. To ensure the veracity of audit information, the operating system must protect aud
    SV-109793r1_rule UBTU-18-010308 CCI-000164 MEDIUM The Ubuntu operating system must be configured so that the audit log directory is not write-accessible by unauthorized users. If audit information were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. To ensure the veracity of audit information, the operating system must protect aud
    SV-109795r1_rule UBTU-18-010309 CCI-000164 MEDIUM The Ubuntu operating system must allow only authorized accounts to own the audit log directory. If audit information were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. To ensure the veracity of audit information, the operating system must protect aud
    SV-109797r1_rule UBTU-18-010310 CCI-000164 MEDIUM The Ubuntu operating system must ensure only authorized groups can own the audit log directory and its underlying files. If audit information were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. To ensure the veracity of audit information, the operating system must protect aud
    SV-109799r1_rule UBTU-18-010311 CCI-000171 MEDIUM The Ubuntu operating system must be configured so that audit configuration files are not write-accessible by unauthorized users. Without the capability to restrict which roles and individuals can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured audits may degrade the system's performance by overwhelming th
    SV-109801r1_rule UBTU-18-010312 CCI-000171 MEDIUM The Ubuntu operating system must permit only authorized accounts to own the audit configuration files. Without the capability to restrict which roles and individuals can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured audits may degrade the system's performance by overwhelming th
    SV-109803r1_rule UBTU-18-010313 CCI-000171 MEDIUM The Ubuntu operating system must permit only authorized groups to own the audit configuration files. Without the capability to restrict which roles and individuals can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured audits may degrade the system's performance by overwhelming th
    SV-109805r1_rule UBTU-18-010314 CCI-001849 LOW The Ubuntu operating system must allocate audit record storage capacity to store at least one weeks worth of audit records, when audit records are not immediately sent to a central audit record storage facility. In order to ensure Ubuntu operating systems have sufficient storage capacity in which to write the audit logs, Ubuntu operating system needs to be able to allocate audit record storage capacity. The task of allocating audit record storage capacity is usu
    SV-109807r1_rule UBTU-18-010315 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the su command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109809r1_rule UBTU-18-010316 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chfn command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109811r1_rule UBTU-18-010317 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the mount command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109813r1_rule UBTU-18-010318 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the umount command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109815r1_rule UBTU-18-010319 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the ssh-agent command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109817r1_rule UBTU-18-010320 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the ssh-keysign command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109819r1_rule UBTU-18-010321 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for any usage of the setxattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109821r1_rule UBTU-18-010322 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for any usage of the lsetxattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109823r1_rule UBTU-18-010323 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for any usage of the fsetxattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109825r1_rule UBTU-18-010325 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for any usage of the lremovexattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109827r1_rule UBTU-18-010326 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for any usage of the fremovexattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109829r1_rule UBTU-18-010327 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chown system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109831r1_rule UBTU-18-010328 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the fchown system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109833r1_rule UBTU-18-010329 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the fchownat system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109835r1_rule UBTU-18-010330 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the lchown system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109837r1_rule UBTU-18-010331 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chmod system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109839r1_rule UBTU-18-010332 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the fchmod system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109841r1_rule UBTU-18-010333 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the fchmodat system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109843r1_rule UBTU-18-010334 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the open system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109845r1_rule UBTU-18-010335 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the truncate system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109847r1_rule UBTU-18-010336 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the ftruncate system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109849r1_rule UBTU-18-010337 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the creat system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109851r1_rule UBTU-18-010338 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the openat system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109853r1_rule UBTU-18-010339 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the open_by_handle_at system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109855r1_rule UBTU-18-010340 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the sudo command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109857r1_rule UBTU-18-010341 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the sudoedit command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109859r1_rule UBTU-18-010342 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chsh command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109861r1_rule UBTU-18-010343 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the newgrp command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109863r1_rule UBTU-18-010344 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chcon command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109865r1_rule UBTU-18-010345 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the apparmor_parser command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109867r1_rule UBTU-18-010346 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the setfacl command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109869r1_rule UBTU-18-010347 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chacl command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109871r1_rule UBTU-18-010348 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the passwd command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109873r1_rule UBTU-18-010349 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the unix_update command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109875r1_rule UBTU-18-010350 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the gpasswd command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109877r1_rule UBTU-18-010351 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chage command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109879r1_rule UBTU-18-010352 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the usermod command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109881r1_rule UBTU-18-010354 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the pam_timestamp_check command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109883r1_rule UBTU-18-010355 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the init_module syscall. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109885r1_rule UBTU-18-010356 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the finit_module syscall. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109887r1_rule UBTU-18-010357 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the delete_module syscall. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109889r1_rule UBTU-18-010358 CCI-002233 MEDIUM The Ubuntu operating system must prevent all software from executing at higher privilege levels than users executing the software and the audit system must be configured to audit the execution of privileged functions. In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher level than the privileges assigned to organizational users invo
    SV-109891r1_rule UBTU-18-010366 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use setxattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109893r1_rule UBTU-18-010367 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use lsetxattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109895r1_rule UBTU-18-010368 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use fsetxattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109897r1_rule UBTU-18-010369 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use the removexattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109899r1_rule UBTU-18-010370 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use the lremovexattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109901r1_rule UBTU-18-010375 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful use of unlink system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109903r1_rule UBTU-18-010376 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful use of unlinkat system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109905r1_rule UBTU-18-010377 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful use of rename system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109907r1_rule UBTU-18-010378 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful use of renameat system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109909r1_rule UBTU-18-010379 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when loading dynamic kernel modules. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit reco
    SV-109911r1_rule UBTU-18-010380 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when unloading dynamic kernel modules. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit reco
    SV-109913r1_rule UBTU-18-010382 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful uses of the truncate system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109915r1_rule UBTU-18-010383 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful uses of the ftruncate system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109917r1_rule UBTU-18-010384 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful uses of the creat system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109919r1_rule UBTU-18-010387 CCI-000172 MEDIUM The Ubuntu operating system must generate records for successful/unsuccessful uses of init_module or finit_module syscalls. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109921r1_rule UBTU-18-010388 CCI-000172 MEDIUM The Ubuntu operating system must generate records for successful/unsuccessful uses of delete_module syscall. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109923r1_rule UBTU-18-010389 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use modprobe command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109925r1_rule UBTU-18-010391 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use the kmod command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109927r1_rule UBTU-18-010392 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use the fdisk command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-109929r1_rule UBTU-18-010400 CCI-000054 LOW The Ubuntu operating system must limit the number of concurrent sessions to ten for all accounts and/or account types. Ubuntu operating system management includes the ability to control the number of users and user sessions that utilize an operating system. Limiting the number of allowed users and sessions per user is helpful in reducing the risks related to DoS attacks.
    SV-109931r1_rule UBTU-18-010401 CCI-000056 MEDIUM The Ubuntu operating system must retain a users session lock until that user reestablishes access using established identification and authentication procedures. A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence. The session lock is implemented a
    SV-109933r1_rule UBTU-18-010402 CCI-000057 MEDIUM The Ubuntu operating system must initiate a session lock after a 15-minute period of inactivity for all connection types. A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the temporary nature of the absence. Rather than relying on the user t
    SV-109935r1_rule UBTU-18-010403 CCI-000058 MEDIUM The Ubuntu operating system must be configured for users to directly initiate a session lock for all connection types. A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary nature of the absence. The session lock is implemented a
    SV-109937r1_rule UBTU-18-010405 CCI-002361 MEDIUM The Ubuntu operating system must automatically terminate a user session after inactivity time-outs have expired. Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of network connections that are associated with communications sessions (i.e., network disconnect). A logical session (for local, net
    SV-109939r1_rule UBTU-18-010410 CCI-000067 MEDIUM The Ubuntu operating system must monitor remote access methods. Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access management difficult at best. Remote access is access to DoD
    SV-109941r1_rule UBTU-18-010411 CCI-000068 MEDIUM The Ubuntu operating system must implement DoD-approved encryption to protect the confidentiality of remote access sessions. Without confidentiality protection mechanisms, unauthorized individuals may gain access to sensitive information via a remote access session. Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) co
    SV-109943r1_rule UBTU-18-010412 CCI-001941 HIGH The Ubuntu operating system must enforce SSHv2 for network access to all accounts. A replay attack may enable an unauthorized user to gain access to the operating system. Authentication sessions between the authenticator and the operating system validating the user credentials must not be vulnerable to a replay attack. An authenticatio
    SV-109945r1_rule UBTU-18-010414 CCI-000877 MEDIUM The Ubuntu operating system must use strong authenticators in establishing nonlocal maintenance and diagnostic sessions. Nonlocal maintenance and diagnostic activities are those activities conducted by individuals communicating through a network, either an external network (e.g., the Internet) or an internal network. Local maintenance and diagnostic activities are those act
    SV-109947r1_rule UBTU-18-010415 CCI-000879 MEDIUM The Ubuntu operating system must immediately terminate all network connections associated with SSH traffic after a period of inactivity. Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of network connections that are associated with communications sessions (i.e., network disconnect). A logical session (for local, net
    SV-109949r1_rule UBTU-18-010416 CCI-001133 MEDIUM The Ubuntu operating system must immediately terminate all network connections associated with SSH traffic at the end of the session or after 10 minutes of inactivity. Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. In addition, quickly terminat
    SV-109951r1_rule UBTU-18-010417 CCI-001453 HIGH The Ubuntu operating system must configure the SSH daemon to only use Message Authentication Codes (MACs) employing FIPS 140-2 approved cryptographic hash algorithms to protect the integrity of nonlocal maintenance and diagnostic communications. Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Nonlocal maintenance and diagnostic activities are those activities conducted by individuals communicating through a network, either an exter
    SV-109953r1_rule UBTU-18-010420 CCI-002418 HIGH The Ubuntu operating system must use SSH to protect the confidentiality and integrity of transmitted information unless otherwise protected by alternative physical safeguards, such as, at a minimum, a Protected Distribution System (PDS). Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read or altered. This requirement applies to both internal and external networks and all
    SV-109955r1_rule UBTU-18-010424 CCI-000366 HIGH The Ubuntu operating system must not allow unattended or automatic login via ssh. Failure to restrict system access to authenticated users negatively impacts Ubuntu operating system security.
    SV-109957r1_rule UBTU-18-010425 CCI-000185 MEDIUM The Ubuntu operating system, for PKI-based authentication, must validate certificates by constructing a certification path (which includes status information) to an accepted trust anchor. Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate not already explicitly trusted. A trust anchor is an authoritative entity represented via a public key and associated data. It is
    SV-109959r1_rule UBTU-18-010426 CCI-000187 HIGH The Ubuntu operating system must map the authenticated identity to the user or group account for PKI-based authentication. Without mapping the certificate used to authenticate to the user account, the ability to determine the identity of the individual user or group will not be available for forensic analysis.
    SV-109961r1_rule UBTU-18-010427 CCI-000765 MEDIUM The Ubuntu operating system must implement smart card logins for multifactor authentication for access to accounts. Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor authentication requires using two or more factors to achieve authentication. Factors include: 1) something a user knows (e.g., p
    SV-109963r1_rule UBTU-18-010431 CCI-001948 MEDIUM The Ubuntu operating system must implement multifactor authentication for remote access to privileged accounts in such a way that one of the factors is provided by a device separate from the system gaining access. Using an authentication device, such as a CAC or token that is separate from the information system, ensures that even if the information system is compromised, that compromise will not affect credentials stored on the authentication device. Multifactor
    SV-109965r1_rule UBTU-18-010432 CCI-001953 MEDIUM The Ubuntu operating system must accept Personal Identity Verification (PIV) credentials. The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the use of the CAC to support identity management and personal authentication for systems covered under Homeland Security Presidential Di
    SV-109967r1_rule UBTU-18-010434 CCI-001954 MEDIUM The Ubuntu operating system must implement certificate status checking for multifactor authentication. The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the use of the CAC to support identity management and personal authentication for systems covered under Homeland Security Presidential Di
    SV-109969r1_rule UBTU-18-010436 CCI-002470 MEDIUM The Ubuntu operating system must only allow the use of DoD PKI-established certificate authorities for verification of the establishment of protected sessions. Untrusted Certificate Authorities (CA) can issue certificates, but they may be issued by organizations or individuals that seek to compromise DoD systems or by organizations with insufficient security controls. If the CA used for verifying the certificate
    SV-109971r1_rule UBTU-18-010437 CCI-002165 LOW Pam_Apparmor must be configured to allow system administrators to pass information to any other Ubuntu operating system administrator or user, change security attributes, and to confine all non-privileged users from executing functions to include disabling, circumventing, or altering implemented security safeguards/countermeasures. When discretionary access control policies are implemented, subjects are not constrained with regard to what actions they can take with information for which they have already been granted access. Thus, subjects that have been granted access to informatio
    SV-109973r1_rule UBTU-18-010441 CCI-001764 MEDIUM The Ubuntu operating system must be configured to use AppArmor. Control of program execution is a mechanism used to prevent execution of unauthorized programs. Some operating systems may provide a capability that runs counter to the mission or provides users with functionality that exceeds mission requirements. This i
    SV-109975r1_rule UBTU-18-010442 CCI-001774 MEDIUM The Apparmor module must be configured to employ a deny-all, permit-by-exception policy to allow the execution of authorized software programs and limit the ability of non-privileged users to grant other users direct access to the contents of their home directories/folders. Control of program execution is a mechanism used to prevent execution of unauthorized programs. Some operating systems may provide a capability that runs counter to the mission or provides users with functionality that exceeds mission requirements. This i
    SV-109977r1_rule UBTU-18-010444 CCI-000764 MEDIUM The Ubuntu operating system must uniquely identify interactive users. To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system. Organizational users include organizational employees or individuals the orga
    SV-109979r1_rule UBTU-18-010445 CCI-000795 MEDIUM The Ubuntu operating system must disable account identifiers (individuals, groups, roles, and devices) after 35 days of inactivity. Inactive identifiers pose a risk to systems and applications because attackers may exploit an inactive identifier and potentially obtain undetected access to the system. Owners of inactive accounts will not notice if unauthorized access to their user acco
    SV-109981r1_rule UBTU-18-010447 CCI-001682 LOW The Ubuntu operating system must automatically remove or disable emergency accounts after 72 hours. Emergency accounts are different from infrequently used accounts (i.e., local logon accounts used by the organization's system administrators when network or normal logon/access is not available). Infrequently used accounts are not subject to automatic te
    SV-109983r1_rule UBTU-18-010448 CCI-000366 MEDIUM The Ubuntu operating system default filesystem permissions must be defined in such a way that all authenticated users can only read and modify their own files. Setting the most restrictive default permissions ensures that when new accounts are created they do not have unnecessary access.
    SV-109985r1_rule UBTU-18-010449 CCI-000016 MEDIUM The Ubuntu operating system must provision temporary user accounts with an expiration time of 72 hours or less. If temporary user accounts remain active when no longer needed or for an excessive period, these accounts may be used to gain unauthorized access. To mitigate this risk, automated termination of all temporary accounts must be set upon account creation. T
    SV-109987r1_rule UBTU-18-010500 CCI-001095 MEDIUM The Ubuntu operating system must be configured to use TCP syncookies. DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. Managing excess capacity ensures that sufficient capacity is availabl
    SV-109989r1_rule UBTU-18-010501 CCI-001891 MEDIUM The Ubuntu operating system must, for networked systems, compare internal information system clocks at least every 24 hours with a server which is synchronized to one of the redundant United States Naval Observatory (USNO) time servers, or a time server designated for the appropriate DoD network (NIPRNet/SIPRNet), and/or the Global Positioning System (GPS). Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. S
    SV-109991r1_rule UBTU-18-010502 CCI-002046 LOW The Ubuntu operating system must synchronize internal information system clocks to the authoritative time source when the time difference is greater than one second. Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events.
    SV-109993r1_rule UBTU-18-010503 CCI-001890 LOW The Ubuntu operating system must record time stamps for audit records that can be mapped to Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT). If time stamps are not consistently applied and there is no common time reference, it is difficult to perform forensic analysis. Time stamps generated by the operating system include date and time. Time is commonly expressed in Coordinated Universal Time
    SV-109995r1_rule UBTU-18-010504 CCI-000382 MEDIUM The Ubuntu operating system must be configured to prohibit or restrict the use of functions, ports, protocols, and/or services, as defined in the PPSM CAL and vulnerability assessments. In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must disable or restrict unused or unnecessary physical and logical po
    SV-109997r1_rule UBTU-18-010505 CCI-001190 MEDIUM Kernel core dumps must be disabled unless needed. Kernel core dumps may contain the full contents of system memory at the time of the crash. Kernel core dumps may consume a considerable amount of disk space and may result in denial of service by exhausting the available space on the target file system pa
    SV-109999r1_rule UBTU-18-010506 CCI-001496 MEDIUM The Ubuntu operating system must use cryptographic mechanisms to protect the integrity of audit tools. Protecting the integrity of the tools used for auditing purposes is a critical step toward ensuring the integrity of audit information. Audit information includes all information (e.g., audit records, audit settings, and audit reports) needed to successfu
    SV-110001r1_rule UBTU-18-010507 CCI-002314 MEDIUM The Ubuntu operating system must enable and run the uncomplicated firewall(ufw). Remote access services, such as those providing remote access to network devices and information systems, which lack automated control capabilities, increase risk and make remote user access management difficult at best. Remote access is access to DoD no
    SV-110003r1_rule UBTU-18-010508 CCI-001744 MEDIUM The Ubuntu operating system must notify designated personnel if baseline configurations are changed in an unauthorized manner. The file integrity tool must notify the system administrator when changes to the baseline configuration or anomalies in the operation of any security functions are discovered. Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized access to the Ubuntu operating system. Changes to Ubuntu operating system configurations can have unintended side effects, some of
    SV-110005r1_rule UBTU-18-010512 CCI-002385 MEDIUM The Ubuntu operating system must configure the uncomplicated firewall to rate-limit impacted network interfaces. DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. This requirement addresses the configuration of the Ubuntu operating s
    SV-110007r1_rule UBTU-18-010513 CCI-002824 MEDIUM The Ubuntu operating system must implement non-executable data to protect its memory from unauthorized code execution. Some adversaries launch attacks with the intent of executing code in non-executable regions of memory or in memory locations that are prohibited. Security safeguards employed to protect memory include, for example, data execution prevention and address sp
    SV-110009r1_rule UBTU-18-010514 CCI-002824 MEDIUM The Ubuntu operating system must implement address space layout randomization to protect its memory from unauthorized code execution. Some adversaries launch attacks with the intent of executing code in non-executable regions of memory or in memory locations that are prohibited. Security safeguards employed to protect memory include, for example, data execution prevention and address sp
    SV-110011r1_rule UBTU-18-010515 CCI-002696 MEDIUM The Ubuntu operating system must use a file integrity tool to verify correct operation of all security functions. Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the
    SV-110013r1_rule UBTU-18-010516 CCI-002699 MEDIUM The Ubuntu operating system must be configured so that a file integrity tool verifies the correct operation of security functions every 30 days. Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the
    SV-110015r1_rule UBTU-18-010520 CCI-000366 MEDIUM The Ubuntu operating system must have an application firewall enabled. Firewalls protect computers from network attacks by blocking or limiting access to open network ports. Application firewalls limit which applications are allowed to communicate over the network.
    SV-110017r1_rule UBTU-18-010521 CCI-002418 MEDIUM The Ubuntu operating system must disable all wireless network adapters. Without protection of communications with wireless peripherals, confidentiality and integrity may be compromised because unprotected communications can be intercepted and either read, altered, or used to compromise the operating system. This requirement
    SV-110019r1_rule UBTU-18-010324 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for any usage of the removexattr system call. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-110021r1_rule UBTU-18-010353 CCI-000172 MEDIUM The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the crontab command. Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. Audit recor
    SV-110023r1_rule UBTU-18-010509 CCI-001958 MEDIUM The Ubuntu operating system must disable automatic mounting of Universal Serial Bus (USB) mass storage driver. Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Peripherals include, but are not limited to, such devices as flash drives, external storage, and printers.