IBM z/OS TSS 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: V7R2

Published: 2020-03-30

Updated At: 2020-05-11 21:04:42

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Drop CKL or SCAP (XCCDF) results here.

    Vuln Rule Version CCI Severity Title Description Status Finding Details Comments
    SV-107553r1_rule TSS0-CE-000010 CCI-000185 MEDIUM All IBM z/OS digital certificates in use must have a valid path to a trusted Certification Authority (CA). 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-107555r1_rule TSS0-CE-000020 CCI-000185 MEDIUM Expired IBM z/OS digital certificates must not be used. 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-107557r1_rule TSS0-CE-000030 CCI-000764 MEDIUM IBM z/OS must have Certificate Name Filtering implemented with appropriate authorization and documentation. 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-107559r1_rule TSS0-ES-000010 CCI-000213 HIGH CA-TSS Security control ACIDs must be limited to the administrative authorities authorized and that require these privileges to perform their job duties. The use of security policy filters provides protection for the confidentiality of data by restricting the flow of data. A crucial part of any flow control solution is the ability to configure policy filters. This allows the operating system to enforce mul
    SV-107561r1_rule TSS0-ES-000020 CCI-000213 MEDIUM The number of CA-TSS ACIDs possessing the tape Bypass Label Processing (BLP) privilege must be limited. The use of security policy filters provides protection for the confidentiality of data by restricting the flow of data. A crucial part of any flow control solution is the ability to configure policy filters. This allows the operating system to enforce mul
    SV-107563r1_rule TSS0-ES-000030 CCI-000015 HIGH CA-TSS MODE Control Option must be set to FAIL. Enterprise environments make account management challenging and complex. A manual process for account management functions adds the risk of a potential oversight or other errors. A comprehensive account management process that includes automation helps t
    SV-107565r1_rule TSS0-ES-000040 CCI-000044 MEDIUM The CA-TSS NPWRTHRESH Control Option must be properly set. 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-107567r1_rule TSS0-ES-000050 CCI-000044 MEDIUM The CA-TSS NPPTHRESH Control Option must be properly set. 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-107569r1_rule TSS0-ES-000060 CCI-000044 MEDIUM The CA-TSS PTHRESH Control Option must be set to 2. 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-107571r1_rule TSS0-ES-000070 CCI-000044 MEDIUM The CA-TSS NPPTHRESH Control Option must be properly set. 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-107573r1_rule TSS0-ES-000080 CCI-000162 MEDIUM IBM z/OS must limit access for SMF collection files (i.e., SYS1.MANx) to appropriate users and/or batch jobs that perform SMF dump processing. SMF data collection is the system activity journaling facility of the z/OS system. Unauthorized access could result in the compromise of logging and recording of the operating system environment, ESM, and customer data. Unauthorized disclosure of audit r
    SV-107575r1_rule TSS0-ES-000090 CCI-000171 HIGH IBM z/OS SYS1.PARMLIB must be properly protected. 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-107577r1_rule TSS0-ES-000100 CCI-000186 MEDIUM IBM z/OS for PKI-based authentication must use the ESM to store keys. If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the network infrastructure. The cornerstone of the PKI is the private key used to encrypt or digitally sign information. If the privat
    SV-107579r1_rule TSS0-ES-000110 CCI-000187 MEDIUM IBM z/OS for PKI-based authentication must use the ESM for key management. 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-107581r1_rule TSS0-ES-000120 CCI-000192 MEDIUM The CA-TSS NEWPHRASE and PPSCHAR Control Options must be properly set. 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-107583r1_rule TSS0-ES-000130 CCI-000194 MEDIUM The CA-TSS NEWPW control options must be properly set. If the private key is stolen, this will lead to the compromise of the authentication and non-repudiation gained through PKI because the attacker can use the private key to digitally sign documents and pretend to be the authorized user. Satisfies: SRG-OS-
    SV-107585r1_rule TSS0-ES-000140 CCI-000196 HIGH IBM z/OS must use NIST FIPS-validated cryptography to protect passwords in the security database. 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. Satisfies: SRG-OS-000073-GPOS-00041, SRG-OS-0
    SV-107587r1_rule TSS0-ES-000150 CCI-000199 MEDIUM The CA-TSS PWEXP Control Option must be set to 60. 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-107589r1_rule TSS0-ES-000160 CCI-000199 MEDIUM The CA-TSS PPEXP Control Option must be properly set. 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-107591r1_rule TSS0-ES-000170 CCI-000200 MEDIUM The CA-TSS PWHIST Control Option must be set to 10 or greater. 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-107593r1_rule TSS0-ES-000180 CCI-000200 MEDIUM The CA-TSS PPHIST Control Option must be properly set. 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-107595r1_rule TSS0-ES-000190 CCI-000205 MEDIUM The IBM z/OS operating system must enforce a minimum eight-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-107597r1_rule TSS0-ES-000200 CCI-000213 MEDIUM CA-TSS access to SYS1.LINKLIB must be properly protected. 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-107599r1_rule TSS0-ES-000210 CCI-000213 HIGH CA-TSS must limit Write or greater access to SYS1.SVCLIB to system programmers only. 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-107601r1_rule TSS0-ES-000220 CCI-000213 HIGH CA-TSS must limit Write or greater access to SYS1.IMAGELIB to system programmers only. 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-107603r1_rule TSS0-ES-000230 CCI-000213 HIGH CA-TSS must limit Write or greater access to SYS1.LPALIB to system programmers only. 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-107605r1_rule TSS0-ES-000240 CCI-000213 HIGH CA-TSS must limit WRITE or greater access to all APF-authorized libraries to system programmers only. 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-107607r1_rule TSS0-ES-000250 CCI-000213 HIGH IBM z/OS libraries included in the system REXXLIB concatenation must be properly protected. 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-107609r1_rule TSS0-ES-000260 CCI-000213 HIGH CA-TSS must limit Write or greater access to all LPA libraries to system programmers only. 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-107611r1_rule TSS0-ES-000270 CCI-000213 HIGH CA-TSS must limit Write or greater access to SYS1.NUCLEUS to system programmers only. 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-107613r1_rule TSS0-ES-000280 CCI-000213 LOW CA-TSS must limit Write or greater access to libraries that contain PPT modules to system programmers only. 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-107615r1_rule TSS0-ES-000290 CCI-000213 MEDIUM CA-TSS must limit WRITE or greater access to LINKLIST libraries to system programmers only. Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileged functions include, for example, establishing accounts,
    SV-107617r1_rule TSS0-ES-000300 CCI-000213 HIGH CA-TSS security data sets and/or databases must be properly protected. 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-107619r1_rule TSS0-ES-000310 CCI-000213 HIGH CA-TSS must limit access to the System Master Catalog to appropriate authorized users. 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-107621r2_rule TSS0-ES-000320 CCI-000213 MEDIUM CA-TSS allocate access to system user catalogs must be limited to system programmers only. 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-107623r1_rule TSS0-ES-000330 CCI-000213 MEDIUM CA-TSS must limit WRITE or greater access to all system-level product installation libraries to system programmers only. 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-107625r1_rule TSS0-ES-000340 CCI-000213 MEDIUM CA-TSS must limit WRITE or greater access to the JES2 System data sets (e.g., Spool, Checkpoint, and Initialization parameters) to system programmers only. 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-107627r1_rule TSS0-ES-000350 CCI-000213 HIGH CA-TSS must limit Write or greater access to SYS1.UADS to system programmers only, and Read and Update access must be limited to system programmer personnel and/or security personnel. 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-107629r1_rule TSS0-ES-000360 CCI-000213 MEDIUM CA-TSS must limit access to data sets used to back up and/or dump SMF collection files to appropriate users and/or batch jobs that perform SMF dump processing. 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-107631r1_rule TSS0-ES-000370 CCI-000213 MEDIUM CA-TSS must limit access to SYSTEM DUMP data sets to system programmers only. System DUMP data sets are used to record system data areas and virtual storage associated with system task failures. Unauthorized access could result in the compromise of the operating system environment, ACP, and customer data. Satisfies: SRG-OS-000080-
    SV-107633r1_rule TSS0-ES-000380 CCI-000213 MEDIUM CA-TSS WRITE or Greater access to System backup files must be limited to system programmers and/or batch jobs that perform DASD backups. 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-107635r1_rule TSS0-ES-000390 CCI-000213 MEDIUM CA-TSS must limit access to SYS(x).TRACE to system programmers only. 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-107637r1_rule TSS0-ES-000400 CCI-000213 MEDIUM CA-TSS must limit access to System page data sets (i.e., PLPA, COMMON, and LOCALx) to system programmers only. 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-107639r1_rule TSS0-ES-000410 CCI-000213 HIGH CA-TSS must limit WRITE or greater access to libraries containing EXIT modules to system programmers only. 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-107641r1_rule TSS0-ES-000420 CCI-000213 HIGH CA-TSS must limit all system PROCLIB data sets to system programmers only and appropriate authorized users. 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-107643r1_rule TSS0-ES-000430 CCI-000213 MEDIUM CA-TSS must protect memory and privileged program dumps in accordance with proper security requirements. Access control policies include: identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include: access control lists, access control matrices, and cryptography. These policies and mechanisms must be empl
    SV-107645r1_rule TSS0-ES-000440 CCI-000213 HIGH IBM z/OS must protect dynamic lists in accordance with proper security requirements. 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-107647r1_rule TSS0-ES-000450 CCI-000213 MEDIUM IBM z/OS system commands must be properly protected. 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-107649r1_rule TSS0-ES-000460 CCI-000213 MEDIUM IBM z/OS MCS consoles access authorization(s) for CONSOLE resource(s) must be properly protected. 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-107651r1_rule TSS0-ES-000470 CCI-000213 MEDIUM CA-TSS must properly define users that have access to the CONSOLE resource in the TSOAUTH resource class. 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-107653r1_rule TSS0-ES-000480 CCI-000213 MEDIUM IBM z/OS Operating system commands (MVS.) of the OPERCMDS resource class must be properly owned. 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-107655r1_rule TSS0-ES-000490 CCI-000213 MEDIUM CA-TSS AUTH Control Option values specified must be set to (OVERRIDE,ALLOVER) or (MERGE,ALLOVER). 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-107657r1_rule TSS0-ES-000500 CCI-000213 HIGH Access to the CA-TSS MODE resource class must be appropriate. 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-107659r1_rule TSS0-ES-000505 CCI-000213 MEDIUM Data set masking characters must be properly defined to the CA-TSS security database. 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-107661r1_rule TSS0-ES-000510 CCI-000213 HIGH CA-TSS Emergency ACIDs must be properly limited and must audit all resource access. 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-107663r1_rule TSS0-ES-000520 CCI-000213 MEDIUM CA-TSS ACIDs must not have access to FAC(*ALL*). 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-107665r1_rule TSS0-ES-000530 CCI-000213 MEDIUM The CA-TSS ALL record must have appropriate access to Facility Matrix Tables. 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-107667r1_rule TSS0-ES-000550 CCI-000213 MEDIUM Data set masking characters allowing access to all data sets must be properly restricted in the CA-TSS security database. 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-107669r1_rule TSS0-ES-000560 CCI-000213 HIGH IBM z/OS DASD Volume access greater than CREATE found in the CA-TSS database must be limited to authorized information technology personnel requiring access to perform their job duties. 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-107671r1_rule TSS0-ES-000570 CCI-000213 MEDIUM IBM z/OS Sensitive Utility Controls must be properly defined and protected. 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-107673r1_rule TSS0-ES-000580 CCI-000366 MEDIUM IBM z/OS Started tasks must be properly defined to CA-TSS. Failure to restrict system access to authenticated users negatively impacts operating system security.
    SV-107675r1_rule TSS0-ES-000590 CCI-000366 MEDIUM The CA-TSS CANCEL Control Option must not be specified. Configuring the 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 restrictive secur
    SV-107677r1_rule TSS0-ES-000600 CCI-000366 MEDIUM The CA-TSS HPBPW Control Option must be set to three days maximum. Configuring the 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 restrictive secur
    SV-107679r1_rule TSS0-ES-000610 CCI-000366 MEDIUM The CA-TSS INSTDATA Control Option must be set to 0. Configuring the 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 restrictive secur
    SV-107681r1_rule TSS0-ES-000620 CCI-000366 MEDIUM The CA-TSS OPTIONS Control Option must include option 4 at a minimum. Configuring the 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 restrictive secur
    SV-107683r1_rule TSS0-ES-000630 CCI-000366 MEDIUM CA-TSS TEMPDS Control Option must be set to YES. Configuring the 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 restrictive secur
    SV-107685r1_rule TSS0-ES-000640 CCI-000366 MEDIUM The number of CA-TSS control ACIDs must be justified and properly assigned. Configuring the 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 restrictive secur
    SV-107687r1_rule TSS0-ES-000650 CCI-000366 MEDIUM The number of CA-TSS ACIDs with MISC9 authority must be justified. Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impactin
    SV-107689r1_rule TSS0-ES-000660 CCI-000366 MEDIUM The CA-TSS LUUPDONCE Control Option value specified must be set to NO. Configuring the 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 restrictive secur
    SV-107691r1_rule TSS0-ES-000670 CCI-000366 MEDIUM The CA-TSS Automatic Data Set Protection (ADSP) Control Option must be set to NO. Configuring the 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 restrictive secur
    SV-107693r1_rule TSS0-ES-000680 CCI-000366 MEDIUM CA-TSS RECOVER Control Option must be set to ON. Configuring the 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 restrictive secur
    SV-107695r1_rule TSS0-ES-000690 CCI-000382 MEDIUM IBM z/OS must properly configure CONSOLxx members. 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-107697r1_rule TSS0-ES-000700 CCI-000382 MEDIUM IBM z/OS must properly protect MCS console userid(s). 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-107699r1_rule TSS0-ES-000710 CCI-000764 MEDIUM The CA-TSS CPFRCVUND Control Option value specified must be set to NO. 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-107701r1_rule TSS0-ES-000720 CCI-000764 MEDIUM The CA-TSS CPFTARGET Control Option value specified must be set to LOCAL. 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-107703r1_rule TSS0-ES-000730 CCI-000764 LOW CA-TSS User ACIDs and Control ACIDs must have the NAME field completed. 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-107705r1_rule TSS0-ES-000740 CCI-000764 HIGH The CA-TSS PASSWORD(NOPW) option must not be specified for any ACID type. 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-107707r1_rule TSS0-ES-000750 CCI-000764 LOW Interactive ACIDs defined to CA-TSS must have the required fields completed. 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-107709r1_rule TSS0-ES-000760 CCI-000764 MEDIUM Started tasks must be properly defined to CA-TSS. 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-107711r1_rule TSS0-ES-000770 CCI-000764 MEDIUM CA-TSS Batch ACID(s) submitted through RJE and NJE must be sourced. 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-107713r1_rule TSS0-ES-000780 CCI-000764 MEDIUM IBM z/OS DASD management ACIDs must be properly defined to CA-TSS. 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-107715r1_rule TSS0-ES-000790 CCI-000770 MEDIUM CA-TSS user accounts must uniquely identify system users. 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-107717r1_rule TSS0-ES-000800 CCI-000795 MEDIUM CA-TSS security administrator must develop a process to suspend userids found inactive for more than 35 days. 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-107719r1_rule TSS0-ES-000810 CCI-000795 MEDIUM The CA-TSS INACTIVE Control Option must be properly set. 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-107721r1_rule TSS0-ES-000820 CCI-001090 MEDIUM The CA-TSS AUTOERASE Control Option must be set to ALL for all systems. 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-107723r1_rule TSS0-ES-000830 CCI-001190 MEDIUM CA-TSS DOWN Control Option values must be properly specified. Failure to a known safe state helps prevent systems from failing to a state that may cause loss of data or unauthorized access to system resources. Operating systems that fail suddenly and with no incorporated failure state planning may leave the system a
    SV-107725r1_rule TSS0-ES-000840 CCI-001774 HIGH The CA-TSS Facility Control Option must specify the sub option of MODE=FAIL. Utilizing a whitelist provides a configuration management method for allowing the execution of only authorized software. Using only authorized software decreases risk by limiting the number of potential vulnerabilities. The organization must identify aut
    SV-107727r1_rule TSS0-ES-000850 CCI-002041 MEDIUM CA-TSS ACID creation must use the EXP option. 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-107729r1_rule TSS0-ES-000860 CCI-002233 MEDIUM The CA-TSS SUBACID Control Option must not be set to U,8. 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-107731r1_rule TSS0-ES-000870 CCI-002233 MEDIUM CA-TSS must use propagation control to eliminate ACID inheritance. 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-107733r1_rule TSS0-ES-000880 CCI-002233 MEDIUM IBM z/OS scheduled production batch ACIDs must specify the CA-TSS BATCH Facility, and the Batch Job Scheduler must be authorized to the Scheduled production CA-TSS batch ACID. 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-107735r1_rule TSS0-ES-000890 CCI-002234 MEDIUM CA-TSS ADMINBY Control Option must be set to ADMINBY. Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious and ongoing concern and can have significant adverse impacts
    SV-107737r1_rule TSS0-ES-000900 CCI-002234 MEDIUM CA-TSS LOG Control Option must be set to (SMF,INIT, SEC9, MSG). Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious and ongoing concern and can have significant adverse impacts
    SV-107739r1_rule TSS0-ES-000910 CCI-002234 MEDIUM CA-TSS MSCA ACID password changes must be documented in the change log. Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious and ongoing concern and can have significant adverse impacts
    SV-107741r1_rule TSS0-ES-000920 CCI-002235 MEDIUM The IBM z/OS IEASYMUP resource must be protected in accordance with proper security requirements. Privileged functions include, for example, establishing accounts, performing system integrity checks, or administering cryptographic key management activities. Non-privileged users are individuals that do not possess appropriate authorizations. Circumvent
    SV-107743r1_rule TSS0-ES-000930 CCI-002235 MEDIUM CA-TSS Default ACID must be properly defined. Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges.
    SV-107745r1_rule TSS0-ES-000940 CCI-002235 HIGH The CA-TSS BYPASS attribute must be limited to trusted STCs only. Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileged functions include, for example, establishing accounts,
    SV-107747r1_rule TSS0-ES-000950 CCI-002235 MEDIUM CA-TSS MSCA ACID must perform security administration only. Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileged functions include, for example, establishing accounts,
    SV-107749r1_rule TSS0-ES-000960 CCI-002235 HIGH CA-TSS ACIDs granted the CONSOLE attribute must be justified. Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileged functions include, for example, establishing accounts,
    SV-107751r1_rule TSS0-ES-000970 CCI-002235 MEDIUM CA-TSS ACIDs defined as security administrators must have the NOATS attribute. Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileged functions include, for example, establishing accounts,
    SV-107753r1_rule TSS0-ES-000980 CCI-002238 MEDIUM The CA-TSS PTHRESH Control Option must be properly set. 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-107755r1_rule TSS0-ES-000990 CCI-002361 MEDIUM CA-TSS VTHRESH Control Option values specified must be set to (10,NOT,CAN). 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-107757r1_rule TSS0-FT-000010 CCI-000048 MEDIUM IBM z/OS FTP.DATA configuration statements must have a proper banner statement with the Standard Mandatory DoD Notice and Consent Banner. Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
    SV-107759r1_rule TSS0-FT-000020 CCI-000067 MEDIUM IBM z/OS SMF recording options for the FTP server must be configured to write SMF records for all eligible events. 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-107761r1_rule TSS0-FT-000030 CCI-000213 MEDIUM CA-TSS permission bits and user audit bits for HFS objects that are part of the FTP server component must be properly configured. 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-107763r1_rule TSS0-FT-000040 CCI-000213 MEDIUM IBM z/OS data sets for the FTP server must be properly protected. 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-107765r1_rule TSS0-FT-000050 CCI-000202 MEDIUM IBM z/OS FTP Control cards must be properly stored in a secure PDS file. Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impactin
    SV-107767r1_rule TSS0-FT-000060 CCI-000382 MEDIUM IBM z/OS user exits for the FTP server must not be used without proper approval and documentation. 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-107769r1_rule TSS0-FT-000070 CCI-000764 MEDIUM The IBM z/OS FTP server daemon must be defined with proper security parameters. 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-107771r1_rule TSS0-FT-000080 CCI-001133 MEDIUM IBM z/OS FTP.DATA configuration for the FTP server must have the INACTIVE statement properly set. 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-107773r1_rule TSS0-FT-000090 CCI-001133 MEDIUM IBM z/OS startup parameters for the FTP server must have the INACTIVE statement properly set. 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-107775r1_rule TSS0-FT-000100 CCI-001384 MEDIUM IBM z/OS FTP.DATA configuration statements for the FTP server must specify the Standard Mandatory DoD Notice and Consent Banner statement. Display of a standardized and approved use notification before granting access to the publicly accessible operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, po
    SV-107777r1_rule TSS0-FT-000110 CCI-001384 MEDIUM The IBM z/OS warning banner for the FTP server must be properly specified. Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
    SV-107779r1_rule TSS0-FT-000120 CCI-001764 MEDIUM The IBM z/OS TFTP server program must be properly protected. 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-107781r1_rule TSS0-JS-000010 CCI-000213 MEDIUM IBM z/OS JES2.** resource must be properly protected in the CA-TSS database. 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-107783r1_rule TSS0-JS-000020 CCI-000213 MEDIUM IBM z/OS RJE workstations and NJE nodes must be controlled in accordance with STIG requirements. 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-107785r1_rule TSS0-JS-000030 CCI-000213 MEDIUM IBM z/OS JES2 input sources must be controlled in accordance with the proper security requirements. 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-107787r1_rule TSS0-JS-000040 CCI-000213 MEDIUM IBM z/OS JES2 input sources must be properly controlled. 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-107789r1_rule TSS0-JS-000050 CCI-000213 MEDIUM IBM z/OS JES2 output devices must be controlled in accordance with the proper security requirements. 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-107791r1_rule TSS0-JS-000060 CCI-000213 MEDIUM IBM z/OS JES2 output devices must be properly controlled for classified systems. 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-107793r1_rule TSS0-JS-000070 CCI-000213 MEDIUM IBM z/OS JESSPOOL resources must be protected in accordance with security requirements. 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-107795r1_rule TSS0-JS-000080 CCI-000213 MEDIUM IBM z/OS JESNEWS resources must be protected in accordance with security requirements. 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-107797r1_rule TSS0-JS-000090 CCI-000213 MEDIUM IBM z/OS JESTRACE and/or SYSLOG resources must be protected in accordance with security requirements. 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-107799r1_rule TSS0-JS-000100 CCI-000213 MEDIUM IBM z/OS JES2 spool resources must be controlled in accordance with security requirements. 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-107801r1_rule TSS0-JS-000110 CCI-000213 MEDIUM IBM z/OS JES2 system commands must be protected in accordance with security requirements. 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-107803r1_rule TSS0-JS-000120 CCI-000213 MEDIUM IBM z/OS Surrogate users must be controlled in accordance with proper security requirements. 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-107805r1_rule TSS0-OS-000010 CCI-000381 MEDIUM Duplicated IBM z/OS sensitive utilities and/or programs must not exist in APF libraries. Removal of unneeded or non-secure functions, ports, protocols, and services mitigate the risk of unauthorized connection of devices, unauthorized transfer of information, or other exploitation of these resources.
    SV-107807r1_rule TSS0-OS-000020 CCI-000018 MEDIUM IBM z/OS required SMF data record types must be collected. Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to create an account. Auditing account creation actions provides logging th
    SV-107809r1_rule TSS0-OS-000030 CCI-000057 MEDIUM IBM z/OS Session manager must properly configure wait time limits. 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-107811r1_rule TSS0-OS-000040 CCI-000067 MEDIUM The IBM z/OS BPX.SMF resource must be properly configured. 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-107813r1_rule TSS0-OS-000050 CCI-000131 MEDIUM IBM z/OS must specify SMF data options to ensure appropriate activation. Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events leading up to an outage or attack. In order to compile an accurate risk assessment and provide forensic analysis, it is essential for security
    SV-107815r1_rule TSS0-OS-000060 CCI-000139 MEDIUM IBM z/OS BUFUSEWARN in the SMFPRMxx must be properly set. 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-107817r1_rule TSS0-OS-000070 CCI-000366 MEDIUM IBM z/OS PASSWORD data set and OS passwords must not be used. Configuring the 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 restrictive secur
    SV-107819r1_rule TSS0-OS-000080 CCI-000366 MEDIUM The CA-TSS database must be on a separate physical volume from its backup and recovery data sets. Configuring the 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 restrictive secur
    SV-107821r1_rule TSS0-OS-000090 CCI-000366 MEDIUM The CA-TSS database must be backed up on a scheduled basis. Configuring the 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 restrictive secur
    SV-107823r1_rule TSS0-OS-000100 CCI-000366 MEDIUM The IBM z/OS Policy Agent must be configured to deny-all, allow-by-exception firewall policy for allowing connections to other systems. Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impactin
    SV-107825r1_rule TSS0-OS-000100 CCI-000366 MEDIUM The IBM z/OS Policy Agent must be configured to deny-all, allow-by-exception firewall policy for allowing connections to other systems. Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impactin
    SV-107827r1_rule TSS0-OS-000110 CCI-000381 MEDIUM IBM z/OS must not have Inaccessible APF libraries defined. It is detrimental for 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 the ri
    SV-107829r1_rule TSS0-OS-000120 CCI-000381 MEDIUM IBM z/OS inapplicable PPT entries must be invalidated. It is detrimental for 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 the ri
    SV-107831r1_rule TSS0-OS-000130 CCI-000381 MEDIUM IBM z/OS LNKAUTH=APFTAB must be specified in the IEASYSxx member(s) in the currently active parmlib data set(s). It is detrimental for 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 the ri
    SV-107833r1_rule TSS0-OS-000140 CCI-001090 MEDIUM IBM z/OS sensitive and critical system data sets must not exist on shared DASD. 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-107835r1_rule TSS0-OS-000150 CCI-001095 MEDIUM The IBM z/OS Policy Agent must contain a policy that manages excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of denial-of-service (DoS) attacks. 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.
    SV-107837r1_rule TSS0-OS-000160 CCI-001199 MEDIUM The IBM z/OS systems requiring data at rest protection must properly employ IBM DS8880 for full disk encryption. 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.
    SV-107839r1_rule TSS0-OS-000170 CCI-001683 MEDIUM The IBM z/OS System Administrator must develop a process to notify appropriate personnel when accounts are created. Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to create a new account. Notification of account creation is one method for
    SV-107841r1_rule TSS0-OS-000180 CCI-001684 MEDIUM The IBM z/OS System Administrator must develop a process to notify appropriate personnel when accounts are modified. Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to create a new account. Notification of account creation is one method for
    SV-107843r1_rule TSS0-OS-000190 CCI-001685 MEDIUM The IBM z/OS System Administrator must develop a process to notify appropriate personnel when accounts are deleted. When operating system accounts are disabled, user accessibility is affected. Accounts are utilized for identifying individual operating system users or for identifying the operating system processes themselves. Sending notification of account disabling ev
    SV-107845r1_rule TSS0-OS-000200 CCI-001686 MEDIUM The IBM z/OS System Administrator must develop a process to notify appropriate personnel when accounts are removed. When operating system accounts are disabled, user accessibility is affected. Accounts are utilized for identifying individual operating system users or for identifying the operating system processes themselves. Sending notification of account disabling ev
    SV-107847r1_rule TSS0-OS-000210 CCI-001764 HIGH Unsupported IBM z/OS system software must not be installed and/or active on the system. 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-107849r1_rule TSS0-OS-000220 CCI-001764 MEDIUM IBM z/OS must not allow nonexistent or inaccessible Link Pack Area (LPA) libraries. 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-107851r1_rule TSS0-OS-000230 CCI-001813 HIGH CA-TSS must be installed and properly configured. Failure to provide logical access restrictions associated with changes to system configuration may have significant effects on the overall security of the system. When dealing with access restrictions pertaining to change control, it should be noted that
    SV-107853r1_rule TSS0-OS-000240 CCI-001849 MEDIUM IBM z/OS SMF collection files (system MANx data sets or LOGSTREAM DASD) must have storage capacity to store at least one weeks worth of audit data. In order to ensure operating systems have a sufficient storage capacity in which to write the audit logs, operating systems need to be able to allocate audit record storage capacity. The task of allocating audit record storage capacity is usually perform
    SV-107855r1_rule TSS0-OS-000250 CCI-001851 MEDIUM IBM z/OS System Administrators must develop an automated process to collect and retain SMF data. 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-107857r1_rule TSS0-OS-000260 CCI-001855 MEDIUM IBM z/OS BUFUSEWARN in the SMFPRMxx must be set to 75 percent of the maximum buffer allotment. If security personnel are not notified immediately when storage volume reaches 75% utilization, they are unable to plan for audit record storage capacity expansion. Satisfies: SRG-OS-000343-GPOS-00134, SRG-OS-000344-GPOS-00135
    SV-107859r1_rule TSS0-OS-000270 CCI-001891 MEDIUM The IBM z/OS SNTP daemon (SNTPD) must be active. 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-107861r1_rule TSS0-OS-000280 CCI-001891 MEDIUM IBM z/OS SNTP daemon (SNTPD) permission bits must be properly configured. 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-107863r1_rule TSS0-OS-000290 CCI-002046 MEDIUM IBM z/OS PARMLIB CLOCKxx must have the Accuracy PARM coded properly. 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-107865r1_rule TSS0-OS-000300 CCI-002385 MEDIUM The IBM z/OS Policy Agent must contain a policy that protects against or limits the effects of denial-of-service (DoS) attacks by ensuring IBM z/OS is implementing rate-limiting measures on 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 operating system t
    SV-107867r1_rule TSS0-OS-000310 CCI-002450 MEDIUM The IBM z/OS systems requiring data at rest protection must properly employ IBM DS8880 for full disk encryption for classified systems. 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-107869r1_rule TSS0-OS-000320 CCI-002475 MEDIUM The IBM z/OS systems requiring data at rest protection must properly employ IBM DS8880 for full disk encryption. Operating systems handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. Selection of a cryptographic mechanism is based on the need to prote
    SV-107871r1_rule TSS0-OS-000330 CCI-000366 MEDIUM IBM z/OS must employ a session manager to manage retaining 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-107873r1_rule TSS0-OS-000340 CCI-000366 MEDIUM The IBM z/OS System Administrator must develop a process to notify Information System Security Officers (ISSOs) of account enabling actions. Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to enable an existing disabled account. Sending notification of account ena
    SV-107875r1_rule TSS0-OS-000350 CCI-000366 MEDIUM IBM z/OS must configure system wait times to protect resource availability based on site priorities. 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-107877r1_rule TSS0-OS-000360 CCI-000060 MEDIUM IBM z/OS must employ a session manager to conceal, via the session lock, information previously visible on the display with a publicly viewable image. 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 log out because of the temporary nature of the absence. The session lock is implemented at the po
    SV-107879r1_rule TSS0-OS-000370 CCI-000057 MEDIUM IBM z/OS must employ a session manager to 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-107881r1_rule TSS0-OS-000380 CCI-000056 MEDIUM IBM z/OS must employ a session manager to manage retaining 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-107883r1_rule TSS0-OS-000390 CCI-000016 MEDIUM IBM z/OS system administrator must develop a procedure to remove or disable temporary user accounts after 72 hours. 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-107885r1_rule TSS0-OS-000410 CCI-002132 MEDIUM IBM z/OS system administrator must develop a procedure to notify System Administrators and ISSOs of account enabling actions. Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to enable an existing disabled account. Sending notification of account ena
    SV-107887r1_rule TSS0-OS-000420 CCI-001744 MEDIUM IBM z/OS system administrator must develop a procedure to notify designated personnel if baseline configurations are changed in an unauthorized manner. Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized access to the operating system. Changes to operating system configurations can have unintended side effects, some of which may be
    SV-107889r1_rule TSS0-OS-000440 CCI-000879 MEDIUM IBM z/OS system administrator must develop a procedure to terminate all sessions and network connections related to nonlocal maintenance when nonlocal maintenance is completed. If a maintenance session or connection remains open after maintenance is completed, it may be hijacked by an attacker and used to compromise or damage the system. Some maintenance and test tools are either standalone devices with their own operating sys
    SV-107891r1_rule TSS0-OS-000450 CCI-002617 MEDIUM IBM z/OS system administrator must develop a procedure to remove 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-107893r1_rule TSS0-OS-000460 CCI-002702 MEDIUM IBM z/OS system administrator must develop a procedure to shut down the information system, restart the information system, and/or notify the system administrator when anomalies in the operation of any security functions are discovered. If anomalies are not acted upon, security functions may fail to secure the system. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the
    SV-107895r1_rule TSS0-OS-000470 CCI-001851 MEDIUM IBM z/OS system administrator must develop a procedure to offload SMF files to a different system or media than the system being audited. The task of allocating audit record storage capacity is usually performed during initial installation of the operating system.
    SV-107897r1_rule TSS0-OS-000480 CCI-000058 MEDIUM IBM z/OS must employ a session manager 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-107899r1_rule TSS0-SH-000020 CCI-000068 HIGH The SSH daemon must be configured to use a FIPS 140-2 compliant cryptographic algorithm. Audit record content that may be necessary to satisfy this requirement includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or
    SV-107901r1_rule TSS0-SH-000030 CCI-000382 HIGH IBM z/OS SSH daemon must be configured to only use the SSHv2 protocol. 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-107903r1_rule TSS0-SL-000010 CCI-000213 MEDIUM IBM z/OS permission bits and user audit bits for HFS objects that are part of the Syslog daemon component must be configured properly. 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-107905r1_rule TSS0-SL-000020 CCI-000764 MEDIUM The IBM z/OS Syslog daemon must not be started at z/OS initialization. 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-107907r1_rule TSS0-SL-000030 CCI-000764 MEDIUM The IBM z/OS Syslog daemon must be properly defined and secured. 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-107909r1_rule TSS0-SM-000010 CCI-000213 MEDIUM IBM z/OS DFSMS resources must be protected in accordance with the proper security requirements. 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-107911r1_rule TSS0-SM-000020 CCI-000213 MEDIUM IBM z/OS DFSMS Program Resources must be properly defined and protected. 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-107913r1_rule TSS0-SM-000030 CCI-000213 MEDIUM IBM z/OS DFSMS control data sets must be protected in accordance with security requirements. 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-107915r1_rule TSS0-SM-000040 CCI-000366 MEDIUM IBM z/OS using DFSMS must properly specify SYS(x).PARMLIB(IGDSMSxx), SMS parameter settings. Configuring the 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 restrictive secur
    SV-107917r1_rule TSS0-SM-000050 CCI-000366 MEDIUM IBM z/OS DFSMS control data sets must be properly protected. Configuring the 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 restrictive secur
    SV-107919r1_rule TSS0-SS-000010 CCI-000067 MEDIUM IBM z/OS SMF recording options for the SSH daemon must be configured to write SMF records for all eligible events. SMF data collection is the basic unit of tracking of all system functions and actions. Included in this tracking data are the audit trails from each of the ACPs. If the control options for the recording of this tracking are not properly maintained, then a
    SV-107921r1_rule TSS0-SS-000040 CCI-001384 MEDIUM The IBM z/OS SSH daemon must be configured with the Standard Mandatory DoD Notice and Consent Banner. Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
    SV-107923r1_rule TSS0-TC-000010 CCI-000067 MEDIUM IBM z/OS PROFILE.TCPIP configuration statements for the TCP/IP stack must be properly coded. 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-107925r1_rule TSS0-TC-000020 CCI-000213 MEDIUM IBM z/OS permission bits and user audit bits for HFS objects that are part of the Base TCP/IP component must be configured properly. 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-107927r1_rule TSS0-TC-000030 CCI-000213 MEDIUM IBM z/OS TCP/IP resources must be properly protected. 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-107929r1_rule TSS0-TC-000040 CCI-000213 MEDIUM IBM z/OS data sets for the Base TCP/IP component must be properly protected. MVS data sets of the Base TCP/IP component provide the configuration, operational, and executable properties of IBMs TCP/IP system product. Failure to properly secure these data sets may lead to unauthorized access resulting in the compromise of the integ
    SV-107931r1_rule TSS0-TC-000050 CCI-000366 MEDIUM IBM z/OS Configuration files for the TCP/IP stack must be properly specified. Configuring the 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 restrictive secur
    SV-107933r1_rule TSS0-TC-000060 CCI-000764 MEDIUM IBM z/OS started tasks for the Base TCP/IP component must be defined in accordance with security requirements. 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-107935r1_rule TSS0-TC-000070 CCI-002314 MEDIUM IBM z//OS must be configured to restrict all TCP/IP ports to ports, protocols, and/or services as defined in the PPSM CAL and vulnerability assessments. 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-107937r1_rule TSS0-TC-000080 CCI-002468 MEDIUM The IBM z/OS TCPIP.DATA configuration statement must contain the DOMAINORIGIN or DOMAIN specified for each TCP/IP defined. If data origin authentication and data integrity verification are not performed, the resultant response could be forged, it may have come from a poisoned cache, the packets could have been intercepted without the resolver's knowledge, or resource records
    SV-107939r1_rule TSS0-TC-000090 CCI-002884 MEDIUM The IBM z/OS PROFILE.TCPIP configuration statement must include SMFPARMS and/or SMFCONFIG Statement for each TCP/IP stack. If events associated with nonlocal administrative access or diagnostic sessions are not logged, a major tool for assessing and investigating attacks would not be available. This requirement addresses auditing-related issues associated with maintenance to
    SV-107941r1_rule TSS0-TN-000010 CCI-000048 MEDIUM IBM z/OS TN3270 Telnet server configuration statement MSG10 text must have the Standard Mandatory DoD Notice and Consent Banner. Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
    SV-107943r1_rule TSS0-TN-000020 CCI-000067 MEDIUM IBM z/OS SMF recording options for the TN3270 Telnet server must be properly specified. 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-107945r1_rule TSS0-TN-000030 CCI-000068 MEDIUM IBM z/OS SSL encryption options for the TN3270 Telnet server must be specified properly for each statement that defines a SECUREPORT or within the TELNETGLOBALS. 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-107947r1_rule TSS0-TN-000040 CCI-000366 MEDIUM IBM z/OS VTAM session setup controls for the TN3270 Telnet server must be properly specified. Configuring the 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 restrictive secur
    SV-107949r1_rule TSS0-TN-000050 CCI-001133 MEDIUM IBM z/OS PROFILE.TCPIP configuration for the TN3270 Telnet server must have the INACTIVE statement properly specified. Terminating network connections associated with communications sessions includes, for example, de-allocating associated TCP/IP address/port pairs at the operating system level, and de-allocating networking assignments at the application level if multiple
    SV-107951r1_rule TSS0-TN-000060 CCI-001384 MEDIUM The IBM z/OS warning banner for the TN3270 Telnet server must be properly specified. Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
    SV-107953r1_rule TSS0-TN-000070 CCI-002420 MEDIUM IBM z/OS TELNETPARMS or TELNETGLOBALS must specify a SECUREPORT statement for systems requiring confidentiality and integrity. Information can be either unintentionally or maliciously disclosed or modified during preparation for transmission, for example, during aggregation, at protocol transformation points, and during packing/unpacking. These unauthorized disclosures or modific
    SV-107955r1_rule TSS0-TS-000010 CCI-000213 MEDIUM IBM Z/OS TSOAUTH resources must be restricted to authorized users. 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-107957r1_rule TSS0-TS-000020 CCI-002235 HIGH CA-TSS LOGONIDs must not be defined to SYS1.UADS for non-emergency use. Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileged functions include, for example, establishing accounts,
    SV-107959r1_rule TSS0-US-000010 CCI-000366 MEDIUM IBM z/OS UNIX HFS MapName file security parameters must be properly specified. Removal of unneeded or non-secure functions, ports, protocols, and services mitigate the risk of unauthorized connection of devices, unauthorized transfer of information, or other exploitation of these resources.
    SV-107961r1_rule TSS0-US-000020 CCI-000140 MEDIUM IBM z/OS NOBUFFS in SMFPRMxx must be properly set (default is MSG). 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-107963r1_rule TSS0-US-000030 CCI-000213 MEDIUM IBM z/OS BPX resource(s) must be protected in accordance with security requirements. 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-107965r1_rule TSS0-US-000040 CCI-000213 MEDIUM IBM z/OS UNIX resources must be protected in accordance with security requirements. 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-107967r1_rule TSS0-US-000050 CCI-000213 HIGH IBM z/OS UNIX SUPERUSER resources must be protected in accordance with guidelines. 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-107969r1_rule TSS0-US-000060 CCI-000213 MEDIUM IBM z/OS UNIX MVS data sets or HFS objects must be properly protected. 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-107971r1_rule TSS0-US-000070 CCI-000213 MEDIUM IBM z/OS UNIX MVS data sets with z/OS UNIX components must be properly protected. 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-107973r1_rule TSS0-US-000080 CCI-000213 MEDIUM IBM z/OS UNIX MVS data sets used as step libraries in /etc/steplib must be properly protected. 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-107975r1_rule TSS0-US-000090 CCI-000213 MEDIUM IBM z/OS UNIX HFS permission bits and audit bits for each directory must be properly protected. 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-107977r1_rule TSS0-US-000100 CCI-000213 MEDIUM IBM z/OS UNIX system file security settings must be properly protected or specified. 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-107979r1_rule TSS0-US-000110 CCI-000213 MEDIUM IBM z/OS UNIX MVS HFS directory(s) with OTHER write permission bit set must be properly defined. 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-107981r1_rule TSS0-US-000120 CCI-000213 HIGH The CA-TSS HFSSEC resource class must be defined with DEFPROT. 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-107983r1_rule TSS0-US-000130 CCI-000366 MEDIUM IBM z/OS UNIX OMVS parameters in PARMLIB must be properly specified. Configuring the 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 restrictive secur
    SV-107985r1_rule TSS0-US-000140 CCI-000366 MEDIUM IBM z/OS UNIX BPXPRMxx security parameters in PARMLIB must be properly specified. Configuring the 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 restrictive secur
    SV-107987r1_rule TSS0-US-000150 CCI-000213 MEDIUM IBM z/OS UNIX security parameters in etc/profile must be properly specified. Configuring the 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 restrictive secur
    SV-107989r1_rule TSS0-US-000160 CCI-000213 MEDIUM IBM z/OS UNIX security parameters in /etc/rc must be properly specified. Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impactin
    SV-107991r1_rule TSS0-US-000170 CCI-000366 MEDIUM IBM z/OS Default profiles must not be defined in TSS OMVS UNIX security parameters for classified systems. Configuring the 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 restrictive secur
    SV-107993r1_rule TSS0-US-000180 CCI-000382 MEDIUM IBM z/OS UNIX security parameters for restricted network service(s) in /etc/inetd.conf must be properly specified. 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-107995r1_rule TSS0-US-000190 CCI-000764 MEDIUM IBM z/OS attributes of z/OS UNIX user accounts must have a unique GID in the range of 1-99. 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-107997r1_rule TSS0-US-000200 CCI-000764 MEDIUM The IBM z/OS user account for the UNIX kernel (OMVS) must be properly defined to the security database. 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-107999r1_rule TSS0-US-000210 CCI-000764 MEDIUM The IBM z/OS user account for the z/OS UNIX SUPERUSER userid must be properly defined. 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-108001r1_rule TSS0-US-000220 CCI-000764 MEDIUM The IBM z/OS user account for the UNIX (RMFGAT) must be properly defined. 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-108003r1_rule TSS0-US-000230 CCI-000764 HIGH IBM z/OS UID(0) must be properly assigned. 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-108005r1_rule TSS0-US-000240 CCI-000764 MEDIUM IBM z/OS UNIX user accounts must be properly defined. 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-108007r1_rule TSS0-US-000250 CCI-000764 MEDIUM IBM z/OS attributes of UNIX user accounts used for account modeling must be defined in accordance with security requirements. 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-108009r1_rule TSS0-UT-000010 CCI-000048 MEDIUM The IBM z/OS UNIX Telnet server etc/banner file must have the Standard Mandatory DoD Notice and Consent Banner. Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
    SV-108011r1_rule TSS0-UT-000020 CCI-000213 MEDIUM The IBM z/OS startup user account for the z/OS UNIX Telnet server must be properly defined. 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-108013r1_rule TSS0-UT-000030 CCI-000213 MEDIUM IBM z/OS HFS objects for the z/OS UNIX Telnet server must be properly protected. 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-108015r1_rule TSS0-UT-000040 CCI-000366 MEDIUM The IBM z/OS UNIX Telnet server Startup parameters must be properly specified. Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
    SV-108017r1_rule TSS0-UT-000050 CCI-001384 MEDIUM The IBM z/OS UNIX Telnet server warning banner must be properly specified. Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
    SV-108019r1_rule TSS0-VT-000010 CCI-000213 MEDIUM IBM z/OS System data sets used to support the VTAM network must be properly secured. 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-108021r1_rule TSS0-VT-000020 CCI-001499 MEDIUM IBM z/OS VTAM USSTAB definitions must not be used for unsecured terminals. 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-109619r1_rule TSS0-OS-000225 CCI-001764 MEDIUM IBM z/OS must not allow nonexistent or inaccessible LINKLIST libraries. 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