IBM z/OS TSS Security Technical Implementation Guide

Description

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]

Details

Version / Release: V8R4

Published: 2021-10-04

Updated At: 2021-11-06 12:48:13

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    Vuln Rule Version CCI Severity Title Description Status Finding Details Comments
    SV-223871r803645_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-223872r561402_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-223873r561402_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-223874r561402_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-223875r561402_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-223876r561402_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-223877r561402_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-223878r561402_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-223879r561402_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-223880r561402_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-223881r561402_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-223882r561402_rule TSS0-ES-000090 CCI-001499 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-223883r695461_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-223885r561402_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-223886r561402_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-223887r561402_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-223888r561402_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-223889r561402_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-223890r561402_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-223891r561402_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-223892r561402_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-223893r561402_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-223894r561402_rule TSS0-ES-000210 CCI-001499 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-223895r561402_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-223896r561402_rule TSS0-ES-000230 CCI-001499 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-223897r561402_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-223898r561402_rule TSS0-ES-000250 CCI-001499 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-223899r561402_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-223900r561402_rule TSS0-ES-000270 CCI-001499 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-223901r561402_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-223902r561402_rule TSS0-ES-000290 CCI-001499 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-223903r561402_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-223904r695470_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-223905r695473_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-223906r561402_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-223907r561402_rule TSS0-ES-000340 CCI-001499 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-223908r561402_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-223909r561402_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-223910r561402_rule TSS0-ES-000370 CCI-001499 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-223911r561402_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-223912r561402_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-223913r561402_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-223914r561402_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-223915r561402_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-223916r561402_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-223917r561402_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-223918r561402_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-223919r561402_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-223920r561402_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-223921r561402_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-223922r561402_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-223923r561402_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-223924r561402_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-223925r803648_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-223926r561402_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-223927r561402_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-223928r561402_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-223929r561402_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-223930r561402_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-223931r561402_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-223932r561402_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-223933r561402_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-223934r561402_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-223935r561402_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-223936r561402_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-223937r561402_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-223938r561402_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-223939r561402_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-223940r561402_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-223941r561402_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-223942r561402_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-223943r561402_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-223944r561402_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-223945r561402_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-223946r561402_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-223947r561402_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-223948r561402_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-223949r561402_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-223950r561402_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-223951r561402_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-223952r561402_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-223953r561402_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-223954r561402_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-223955r561402_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-223956r561402_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-223957r561402_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-223958r561402_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-223959r561402_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-223960r561402_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-223961r561402_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-223962r561402_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-223963r561402_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-223964r561402_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-223965r561402_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-223966r561402_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-223967r561402_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-223968r561402_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-223969r561402_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-223970r561402_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-223971r561402_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-223972r561402_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-223973r561402_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-223974r561402_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-223975r561402_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-223976r561402_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-223977r561402_rule TSS0-FT-000050 CCI-000366 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-223978r561402_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-223979r561402_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-223980r561402_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-223981r561402_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-223982r561402_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-223983r561402_rule TSS0-FT-000110 CCI-001388 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-223984r561402_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-223985r561402_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-223986r561402_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-223987r561402_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-223988r561402_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-223989r561402_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-223990r561402_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-223991r561402_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-223992r561402_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-223993r561402_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-223994r561402_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-223995r561402_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-223996r561402_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-223997r561402_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-223998r767114_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-223999r561402_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-224000r561402_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-224001r561402_rule TSS0-OS-000050 CCI-000133 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-224002r561402_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-224003r561402_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-224004r561402_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-224005r561402_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-224006r561402_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-224007r561402_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-224008r561402_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-224009r561402_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-224010r561402_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-224011r561402_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-224013r561402_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-224014r561402_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-224015r561402_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-224016r561402_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-224017r561402_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-224018r561402_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-224019r561402_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
    SV-224020r561402_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-224021r561402_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-224022r561402_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-224023r561402_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-224024r561402_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-224025r561402_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-224026r561402_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-224029r561402_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-224030r561402_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-224031r561402_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-224032r561402_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-224033r561402_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-224034r561402_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-224035r561402_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-224036r561402_rule TSS0-OS-000400 CCI-001682 MEDIUM IBM z/OS system administrator must develop a procedure to remove or disable emergency accounts after the crisis is resolved or 72 hours. Emergency accounts are privileged accounts that are established in response to crisis situations where the need for rapid account activation is required. Therefore, emergency account activation may bypass normal account authorization processes. If these a
    SV-224037r561402_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-224038r561402_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-224039r561402_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-224040r561402_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-224041r561402_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-224042r561402_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-224043r561402_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-224044r561402_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-224045r561402_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-224046r561402_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-224047r561402_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-224048r561402_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-224049r561402_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-224050r561402_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-224051r561402_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-224052r561402_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-224053r561402_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-224054r561402_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-224055r561402_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-224056r561402_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-224057r561402_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-224058r561402_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-224059r561402_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-224060r768728_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-224061r561402_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-224062r561402_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-224064r561402_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-224065r561402_rule TSS0-TN-000010 CCI-000050 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-224066r561402_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-224067r561402_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-224068r561402_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-224069r561402_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-224070r561402_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-224071r790513_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-224072r561402_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-224073r561402_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-224074r561402_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-224075r561402_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-224076r695474_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-224077r695477_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-224078r561402_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-224079r561402_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-224080r561402_rule TSS0-US-000070 CCI-001499 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-224081r561402_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-224082r561402_rule TSS0-US-000090 CCI-001499 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-224083r561402_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-224084r561402_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-224085r561402_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-224086r561402_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-224087r561402_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-224088r561402_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-224089r561402_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-224090r561402_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-224091r561402_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-224092r561402_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-224093r561402_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-224094r561402_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-224095r561402_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-224096r561402_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-224097r561402_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-224098r561402_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-224099r695479_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-224100r561402_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-224101r561402_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-224102r561402_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-224103r561402_rule TSS0-UT-000050 CCI-001386 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-224104r561402_rule TSS0-VT-000010 CCI-001499 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-224105r561402_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-245537r768731_rule TSS0-TC-000080 CCI-000366 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-251108r804055_rule TSS0-OS-000320 CCI-002475 MEDIUM The IBM z/OS systems requiring data at rest protection must properly employ IBM DS8880 or equivalent hardware solutions 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