Title

If Network Security Services (NSS) is being used by SLEM 5 it must prohibit the use of cached authentications after one day. (Cat II impact)

Discussion

If cached authentication information is out of date, the validity of the authentication information may be questionable.

Check Content

If NSS is used by SLEM 5, verify it prohibits the use of cached authentications after one day with the following command: Note: If NSS is not used on the operating system, this is not applicable. > sudo grep -i "memcache_timeout" /etc/sssd/sssd.conf memcache_timeout = 86400 If "memcache_timeout" has a value greater than "86400", the line is commented out, or the line is missing, this is a finding.

Fix Text

Configure NSS, if used by SLEM 5, to prohibit the use of cached authentications after one day. Add or modify the following line in the "/etc/sssd/sssd.conf" file, below the line "[nss]": memcache_timeout = 86400

Additional Identifiers

Rule ID: SV-261399r996617_rule

Vulnerability ID: V-261399

Group Title: SRG-OS-000383-GPOS-00166

Expert Comments

CCIs tied to check.

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