Check: TSS0-ES-000390
IBM z/OS TSS STIG:
TSS0-ES-000390
(in versions v8 r13 through v7 r1)
Title
CA-TSS must limit access to SYS(x).TRACE to system programmers only. (Cat II impact)
Discussion
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 that do not rely solely on the possession of a certificate for access. Successful authentication must not automatically give an entity access to an asset or security boundary. Authorization procedures and controls must be implemented to ensure each authenticated entity also has a validated and current authorization. Authorization is the process of determining whether an entity, once authenticated, is permitted to access a specific asset. Information systems use access control policies and enforcement mechanisms to implement this requirement. 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 employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system. Satisfies: SRG-OS-000080-GPOS-00048, SRG-OS-000324-GPOS-00125
Check Content
Execute a dataset list of access for SYS(x).TRACE files. If the ESM data set rule for SYS1.TRACE restricts access to systems programming personnel and started tasks that perform GTF processing, this is not a finding. If the ESM data set rule for SYS1.TRACE restricts access to others as documented and approved by ISSM, this is not a finding.
Fix Text
Configure the ESM access to SYS1.TRACE to be limited to system programmers or started tasks that perform GTF processing. Other user access can be granted as documented and approved by the ISSM.
Additional Identifiers
Rule ID: SV-223912r877753_rule
Vulnerability ID: V-223912
Group Title: SRG-OS-000080-GPOS-00048
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000213 |
The information system enforces approved authorizations for logical access to information and system resources in accordance with applicable access control policies. |
CCI-002235 |
The information system prevents non-privileged users from executing privileged functions to include disabling, circumventing, or altering implemented security safeguards/countermeasures. |