V-258133

Discussion

If cached authentication information is out-of-date, the validity of the authentication information may be questionable.

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Verify that the System Security Services Daemon (SSSD) prohibits the use of cached authentications after one day.

Note: Cached authentication settings should be configured even if smart card authentication is not used on the system.

Check that SSSD allows cached authentications with the following command:

$ sudo grep -ir cache_credentials /etc/sssd/sssd.conf /etc/sssd/conf.d/

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 -ir offline_credentials_expiration /etc/sssd/sssd.conf /etc/sssd/conf.d/

offline_credentials_expiration = 1

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