If Network Security Services (NSS) is being used by the SUSE operating system it must prohibit the use of cached authentications after one day.

From SLES 12 Security Technical Implementation Guide

Associated with: CCI-002007

SV-91879r3_rule If Network Security Services (NSS) is being used by the SUSE operating system it must prohibit the use of cached authentications after one day.

Vulnerability discussion

If cached authentication information is out of date, the validity of the authentication information may be questionable.

Check content

If Network Security Services (NSS) is being used by the SUSE operating system verify that it prohibits the use of cached authentications after one day. Check that cached authentications cannot be used after one day with the following command: # sudo grep -i "memcache_timeout" /etc/sssd/sssd.conf memcache_timeout = 86400 If "memcache_timeout" has a value greater than "86400", or is missing, this is a finding.

Fix text

Configure NSS, if used by the SUSE operating system, 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 "[nss]": memcache_timeout = 86400

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