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: V8R10

Published: 2023-03-20

Updated At: 2023-05-04 00:34:50

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Rule	Version	CCI	Severity	Title	Description
SV-223871r877712_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-223872r877713_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-223873r877714_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-223874r877715_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-223875r877716_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-223876r877717_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-223877r877718_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-223878r877719_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-223879r877720_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-223880r877721_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-223881r877722_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-223882r877723_rule	TSS0-ES-000090	CCI-000171	HIGH	IBM z/OS SYS1.PARMLIB must be properly protected.	Without the capability to restrict which roles and individuals can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured audits may degrade the system's performance by overwhelming th
SV-223883r877725_rule	TSS0-ES-000100	CCI-000186	MEDIUM	IBM z/OS for PKI-based authentication must use ICSF or 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-223885r877726_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-223886r877727_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-223887r877728_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-223888r877729_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-223889r877730_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-223890r877731_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-223891r877732_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-223892r877733_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-223893r877734_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-223894r877735_rule	TSS0-ES-000210	CCI-000213	HIGH	CA-TSS must limit Write or greater access to SYS1.SVCLIB to system programmers only.	To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods
SV-223895r877736_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-223896r877737_rule	TSS0-ES-000230	CCI-000213	HIGH	CA-TSS must limit Write or greater access to SYS1.LPALIB to system programmers only.	To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods
SV-223897r877738_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-223898r877739_rule	TSS0-ES-000250	CCI-000213	HIGH	IBM z/OS libraries included in the system REXXLIB concatenation must be properly protected.	To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods
SV-223899r877740_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-223900r877741_rule	TSS0-ES-000270	CCI-000213	HIGH	CA-TSS must limit Write or greater access to SYS1.NUCLEUS to system programmers only.	To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods
SV-223901r877742_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-223902r877743_rule	TSS0-ES-000290	CCI-000213	MEDIUM	CA-TSS must limit WRITE or greater access to LINKLIST libraries to system programmers only.	Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileged functions include, for example, establishing accounts,
SV-223903r877744_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-223904r877745_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-223905r877746_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-223906r877747_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-223907r877748_rule	TSS0-ES-000340	CCI-000213	MEDIUM	CA-TSS must limit WRITE or greater access to the JES2 System data sets (e.g., Spool, Checkpoint, and Initialization parameters) to system programmers only.	To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods
SV-223908r877749_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-223909r877750_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-223910r877751_rule	TSS0-ES-000370	CCI-000213	MEDIUM	CA-TSS must limit access to SYSTEM DUMP data sets to system programmers only.	System DUMP data sets are used to record system data areas and virtual storage associated with system task failures. Unauthorized access could result in the compromise of the operating system environment, ACP, and customer data. Satisfies: SRG-OS-000080-
SV-223911r877752_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-223912r877753_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-223913r877754_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-223914r877755_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-223915r877756_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-223916r877757_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-223917r877758_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-223918r877759_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-223919r877760_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-223920r877761_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-223921r877762_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-223922r877763_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-223923r877764_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-223924r877765_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-223925r877766_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-223926r877767_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-223927r877768_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-223928r877769_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-223929r877770_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-223930r877771_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-223931r881331_rule	TSS0-ES-000580	CCI-000366	MEDIUM	IBM z/OS Started tasks must be properly defined to CA-TSS.	Started procedures have system generated job statements that do not contain the user, group, or password statements. To enable the started procedure to access the same protected resources that users and groups access, started procedures must have an assoc
SV-223932r877773_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-223933r877774_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-223934r877775_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-223935r877776_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-223936r877777_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-223937r877778_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-223938r877779_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-223939r877780_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-223940r877781_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-223941r877782_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-223942r877783_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-223943r877784_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-223944r877785_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-223945r877786_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-223946r877787_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-223947r877788_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-223948r877789_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-223950r877791_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-223951r877792_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-223952r877793_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-223953r877794_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-223954r877795_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-223955r877796_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-223956r877797_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-223957r877798_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-223958r877799_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-223959r877800_rule	TSS0-ES-000860	CCI-002233	MEDIUM	The CA-TSS SUBACID Control Option must 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-223960r877801_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-223961r877802_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-223962r877803_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-223963r877804_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-223964r877805_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-223965r877806_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-223966r877807_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-223967r877808_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-223968r877809_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-223969r877810_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-223970r877811_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-223971r877812_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-223972r877813_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-223973r877814_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-223974r877815_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-223975r877816_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-223976r877817_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-223977r877818_rule	TSS0-FT-000050	CCI-000202	MEDIUM	IBM z/OS FTP Control cards must be properly stored in a secure PDS file.	Configuration settings are the set of parameters that can be changed in hardware, software, or firmware components of the system that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impactin
SV-223978r877819_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-223979r877820_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-223980r877821_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-223981r877822_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-223982r877823_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-223983r877824_rule	TSS0-FT-000110	CCI-001384	MEDIUM	The IBM z/OS warning banner for the FTP server must be properly specified.	Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
SV-223984r877825_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-223985r877826_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-223986r877827_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-223987r877828_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-223988r877829_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-223989r877830_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-223990r877831_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-223991r877832_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-223992r877833_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-223993r877834_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-223994r877835_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-223995r877836_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-223996r877837_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-223997r877838_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-223998r877839_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-223999r877840_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-224000r877841_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-224001r877842_rule	TSS0-OS-000050	CCI-000131	MEDIUM	IBM z/OS must specify SMF data options to ensure appropriate activation.	Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events leading up to an outage or attack. In order to compile an accurate risk assessment and provide forensic analysis, it is essential for security
SV-224002r877843_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-224003r877844_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-224004r877845_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-224005r877846_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-224006r877847_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-224007r877848_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-224008r877849_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-224009r877850_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-224010r877851_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-224011r877852_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-224013r877853_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-224014r877854_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-224015r877855_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-224016r877856_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-224017r877857_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-224018r877858_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-224019r877859_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-224020r877860_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-224021r877861_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-224022r877862_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-224023r877863_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-224024r877864_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-224025r877865_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-224026r877866_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-224029r877867_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-224030r877868_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-224031r877869_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-224032r877870_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-224033r877871_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-224034r877872_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-224035r877873_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-224036r877874_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-224037r877875_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-224038r877876_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-224039r877877_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-224040r877878_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-224041r877879_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-224042r877880_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-224043r877881_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-224044r877882_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-224045r877883_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-224046r877884_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-224047r877885_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-224048r877886_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-224049r877887_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-224050r877888_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-224051r877889_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-224052r877890_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-224053r877891_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-224054r904400_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-224055r877893_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-224056r877896_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-224057r877897_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-224058r877898_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-224059r877899_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-224060r877900_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-224061r877901_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-224062r877902_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-224065r877903_rule	TSS0-TN-000010	CCI-000048	MEDIUM	IBM z/OS TN3270 Telnet server configuration statement MSG10 text must have the Standard Mandatory DoD Notice and Consent Banner.	Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
SV-224066r877904_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-224067r877905_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-224068r877906_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-224069r877907_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-224070r877908_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-224071r877909_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-224072r877910_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-224073r877911_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-224074r877912_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-224075r877913_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-224076r877914_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-224077r877915_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-224078r877916_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-224079r877917_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-224080r877918_rule	TSS0-US-000070	CCI-000213	MEDIUM	IBM z/OS UNIX MVS data sets with z/OS UNIX components must be properly protected.	To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods
SV-224081r877919_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-224082r877920_rule	TSS0-US-000090	CCI-000213	MEDIUM	IBM z/OS UNIX HFS permission bits and audit bits for each directory must be properly protected.	To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods
SV-224083r877921_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-224084r877922_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-224085r877923_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-224086r877924_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-224087r877925_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-224088r877926_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-224089r877927_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-224090r877928_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-224091r877929_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-224092r877930_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-224093r877931_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-224094r877932_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-224095r877933_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-224096r877934_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-224097r877935_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-224098r877936_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-224099r877939_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-224100r877940_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-224101r877941_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-224102r877942_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-224103r877943_rule	TSS0-UT-000050	CCI-001384	MEDIUM	The IBM z/OS UNIX Telnet server warning banner must be properly specified.	Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal laws, Executive Orders, directives, policies, regulations,
SV-224104r877944_rule	TSS0-VT-000010	CCI-000213	MEDIUM	IBM z/OS System data sets used to support the VTAM network must be properly secured.	To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods
SV-224105r877945_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-245537r877948_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-251108r877949_rule	TSS0-OS-000320	CCI-002476	MEDIUM	The IBM z/OS systems requiring data at rest protection must properly employ IBM DS8880 or equivalent hardware solutions for full disk encryption.	This control addresses the confidentiality and integrity of information at rest and covers user information and system information. Information at rest refers to the state of information when it is located on storage devices as specific components of info
SV-252554r816962_rule	TSS0-TC-000100	CCI-000067	MEDIUM	IBM z/OS TCP/IP AT-TLS policy must be properly configured in Policy Agent.	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-255896r877951_rule	TSS0-FT-000130	CCI-000366	MEDIUM	IBM z/OS FTP.DATA configuration statements for the FTP Server must be specified in accordance with requirements.	This requirement is intended to cover both traditional interactive logons to information systems and general accesses to information systems that occur in other types of architectural configurations (e.g., service-oriented architectures).
SV-255940r881312_rule	TSS0-IC-000010	CCI-000366	MEDIUM	IBM Integrated Crypto Service Facility (ICSF) Configuration parameters must be correctly specified.	IBM Integrated Crypto Service Facility (ICSF) product has the ability to use privileged functions and/or have access to sensitive data. Failure to properly configure parameter values could potentially the integrity of the base product which could result i
SV-255941r881315_rule	TSS0-IC-000020	CCI-000213	MEDIUM	IBM Integrated Crypto Service Facility (ICSF) install data sets are not properly protected.	IBM Integrated Crypto Service Facility (ICSF) product has the ability to use privileged functions and/or have access to sensitive data. Failure to properly restrict access to their data sets could result in violating the integrity of the base product whic
SV-255942r881318_rule	TSS0-IC-000040	CCI-000764	MEDIUM	IBM Integrated Crypto Service Facility (ICSF) Started Task name is not properly identified / defined to the system ACP.	IBM Integrated Crypto Service Facility (ICSF) requires a started task that will be restricted to certain resources, datasets and other system functions. By defining the started task as a userid to the system ACP, It allows the ACP to control the access an
SV-255943r881321_rule	TSS0-IC-000050	CCI-000764	MEDIUM	IBM Integrated Crypto Service Facility (ICSF) Started task(s) must be properly defined to the Started Task Table ACID for Top Secret.	Access to product resources should be restricted to only those individuals responsible for the application connectivity and who have a requirement to access these resources. Improper control of product resources could potentially compromise the operating
SV-255944r881324_rule	TSS0-IC-000030	CCI-001499	MEDIUM	IBM Integrated Crypto Service Facility (ICSF) STC data sets must be properly protected.	IBM Integrated Crypto Service Facility (ICSF) STC data sets have the ability to use privileged functions and/or have access to sensitive data. Failure to properly restrict access to their data sets could result in violating the integrity of the base prod

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IBM z/OS TSS Security Technical Implementation Guide

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