STIGQter: STIG Summary: z/OS CL/SuperSession for TSS Security Technical Implementation Guide Version: 7 Release: 2 Benchmark Date: 01 Oct 2025:

CL/SuperSession is not properly defined to the Facility Matrix Table for Top Secret.

DISA Rule

SV-224655r1145880_rule

Vulnerability Number

V-224655

Group Title

SRG-OS-000104

Rule Version

ZCLST036

Severity

CAT II

CCI(s)

• CCI-000764 - Uniquely identify and authenticate organizational users and associate that unique identification with processes acting on behalf of those users.

Weight

10

Fix Recommendation

Define the CT/Engine started task name KLS as a Facility to TOP SECRET in the Facility Matrix Table using the following example:

*KLS CL/SUPERSESSION
FACILITY(USERxx=NAME=KLS)
FACILITY(KLS=MODE=FAIL,ACTIVE,SHRPRF)
FACILITY(KLS=PGM=KLV,NOASUBM,NOABEND,NOXDEF)
FACILITY(KLS=ID=xx,MULTIUSER,RES,LUMSG,STMSG,WARNPW,SIGN(M))
FACILITY(KLS=NOINSTDATA,NORNDPW,AUTHINIT,NOPROMPT,NOAUDIT)
FACILITY(KLS=NOTSOC,LOG(INIT,SMF,MSG,SEC9))

Check Contents

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

- TSSCMDS.RPT(FACLIST) - Preferred report containing all control option values in effect including default values.
- TSSCMDS.RPT(TSSPRMFL) - Alternate report containing only control option values explicitly coded at TSS startup.

If the CL/SuperSession Facility Matrix table is defined as stated below, this is not a finding.

*KLS CL/SUPERSESSION
FACILITY(USERxx=NAME=KLS)
FACILITY(KLS=MODE=FAIL,ACTIVE,SHRPRF)
FACILITY(KLS=PGM=KLV,NOASUBM,NOABEND,NOXDEF)
FACILITY(KLS=ID=xx,MULTIUSER,RES,LUMSG,STMSG,WARNPW,SIGN(M))
FACILITY(KLS=NOINSTDATA,NORNDPW,AUTHINIT,NOPROMPT,NOAUDIT)
FACILITY(KLS=NOTSOC,LOG(INIT,SMF,MSG,SEC9))

Vulnerability Number

V-224655

Documentable

False

Rule Version

ZCLST036

Severity Override Guidance

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

- TSSCMDS.RPT(FACLIST) - Preferred report containing all control option values in effect including default values.
- TSSCMDS.RPT(TSSPRMFL) - Alternate report containing only control option values explicitly coded at TSS startup.

If the CL/SuperSession Facility Matrix table is defined as stated below, this is not a finding.

*KLS CL/SUPERSESSION
FACILITY(USERxx=NAME=KLS)
FACILITY(KLS=MODE=FAIL,ACTIVE,SHRPRF)
FACILITY(KLS=PGM=KLV,NOASUBM,NOABEND,NOXDEF)
FACILITY(KLS=ID=xx,MULTIUSER,RES,LUMSG,STMSG,WARNPW,SIGN(M))
FACILITY(KLS=NOINSTDATA,NORNDPW,AUTHINIT,NOPROMPT,NOAUDIT)
FACILITY(KLS=NOTSOC,LOG(INIT,SMF,MSG,SEC9))

Check Content Reference

M

Target Key

4181