STIGQter STIGQter: STIG Summary: Red Hat Enterprise Linux 8 Security Technical Implementation Guide Version: 2 Release: 8 Benchmark Date: 01 Jul 2026:

RHEL 8 must prohibit the use of cached authentications after one day.

DISA Rule

SV-230376r1069307_rule

Vulnerability Number

V-230376

Group Title

SRG-OS-000383-GPOS-00166

Rule Version

RHEL-08-020290

Severity

CAT II

CCI(s)

Weight

10

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

Check Contents

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

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

Check that SSSD allows cached authentications with the following command:

$ sudo grep cache_credentials /etc/sssd/sssd.conf
/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
/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-230376

Documentable

False

Rule Version

RHEL-08-020290

Severity Override Guidance

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

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

Check that SSSD allows cached authentications with the following command:

$ sudo grep cache_credentials /etc/sssd/sssd.conf
/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
/etc/sssd/sssd.conf:offline_credentials_expiration = 1

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

Check Content Reference

M

Target Key

2921