Check: TSS0540
zOS TSS STIG:
TSS0540
(in versions v6 r43 through v6 r30)
Title
The PTHRESH Control Option is not set to (2). (Cat II impact)
Discussion
The PTHRESH Control Option selects a maximum password violation threshold. If the user exceeds the specified threshold by entering the wrong password too many times, TSS suspends the ACID. The system-wide options control the default settings for determining how the ACP will function when handling requests for access to the operating system environment, ACP, and customer data. The ACP provides the ability to set a number of these fields at the subsystem level. If no setting is found, the system-wide defaults will be used. The improper setting of any of these fields, individually or in combination with another, can compromise the security of the processing environment. In addition, failure to establish standardized settings for the ACP control options introduces the possibility of exposure during migration process or contingency plan activation.
Check Content
a) Refer to the following report produced by the TSS Data Collection: - TSSCMDS.RPT(STATUS) Automated Analysis Refer to the following report produced by the TSS Data Collection: - PDI(TSS0540) b) If the PTHRESH Control Option value is set to PTHRESH(2), there is NO FINDING. c) If the PTHRESH Control Option value is NOT set to PTHRESH(2), this is a FINDING.
Fix Text
Evaluate the impact associated with implementation of the control option. Develop a plan of action to implement the control option setting as specified following and proceed with the change. PTHRESH(2)
Additional Identifiers
Rule ID: SV-211r2_rule
Vulnerability ID: V-211
Group Title: TSS0540
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000044 |
Enforce the organization-defined limit of consecutive invalid logon attempts by a user during the organization-defined time period. |
| CCI-002238 |
Automatically lock the account or node for either an organization-defined time period, until the locked account or node is released by an administrator, or delays the next logon prompt according to the organization-defined delay algorithm when the maximum number of unsuccessful logon attempts is exceeded. |
| CCI-002361 |
Automatically terminate a user session after organization-defined conditions or trigger events requiring session disconnect. |