STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide Version: 2 Release: 6 Benchmark Date: 01 Jul 2026:

TOSS must prohibit the use of cached authentications after one day.

DISA Rule

SV-252933r958828_rule

Vulnerability Number

V-252933

Group Title

SRG-OS-000383-GPOS-00166

Rule Version

TOSS-04-010250

Severity

CAT II

CCI(s)

CCI-002007 - Prohibit the use of cached authenticators after an organization-defined time period.

Weight

Fix Recommendation

Configure the SSSD to prohibit the use of cached authentications after one day.

Add or change the following line in "/etc/sssd/sssd.conf" just below the line "[pam]."

offline_credentials_expiration = 1

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Verify that SSSD prohibits the use of cached authentications after one day.

Note: If smart card authentication is not being used on the system, this item is Not Applicable.

Check that SSSD allows cached authentications with the following command:

$ sudo grep cache_credentials /etc/sssd/sssd.conf

cache_credentials = true

If "cache_credentials" is set to "false" or missing from the configuration file, this is not a finding and no further checks are required.

If "cache_credentials" is set to "true", check that SSSD prohibits the use of cached authentications after one day with the following command:

$ sudo grep offline_credentials_expiration /etc/sssd/sssd.conf

offline_credentials_expiration = 1

If "offline_credentials_expiration" is not set to a value of "1", this is a finding.

Vulnerability Number

V-252933

Documentable

False

Rule Version

TOSS-04-010250

Severity Override Guidance

Check Content Reference

Target Key

5469