V-224732

Discussion

CICS is a transaction-processing product that provides programmers with the facilities to develop interactive applications. Improperly defined or controlled CICS userids (i.e., region, default, and terminal users) may provide an exposure and vulnerability within the CICS environment. This could result in the compromise of the confidentiality, integrity, and availability of the CICS region, applications, and customer data.

Check Content

Refer to the following report produced by the z/OS Data Collection:

- EXAM.RPT(CICSPROC).

Refer to the following reports produced by the TSS Data Collection:

- TSSCMDS.RPT(@ACID).
- TSSCMDS.RPT(#STC).

Refer to the CICS Systems Programmer Worksheets filled out from previous vulnerability ZCIC0010.

If the following items are in effect for each CICS region ACID, this is not a finding.

A unique ACID is associated with the CICS region.
No access to interactive online facilities (e.g., TSO) other than CICS.
CICS region ACID does not have any BYPASS privilege. EXCEPT: NOSUBCHK - REQUIRED FOR CICS REGIONS TO SUBMIT BATCH PROCESSING/JOBS OF THE USER WHO IS LOGGED INTO CICS.
Ensure that each CICS region ACID is associated with a TSS CICS facility. For example:

TSS ADD(CICS region ACID) MASTFAC(CICS facility)
CICS region is defined in the STC table. For example:

TSS ADD(STC) PROCNAME(CICS region) ACID(CICS ACID)