If LDAP authentication is required, AIX must setup LDAP client to refresh user and group caches less than a day.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-215205	AIX7-00-001046	SV-215205r508663_rule		Medium

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If cached authentication information is out-of-date, the validity of the authentication information may be questionable.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2021-06-16

Details

Check Text ( C-16403r294066_chk )
If LDAP authentication is not required, this is Not Applicable. Verify the "/etc/security/ldap/ldap.cfg" file to see if the following two keywords have a value that is greater than "900" seconds: # grep -i usercachetimeout /etc/security/ldap/ldap.cfg usercachetimeout: 900 # grep -i groupcachetimeout /etc/security/ldap/ldap.cfg groupcachetimeout: 900 If any of the above keywords does not exist, is commented out, or any value of the above keywords are greater than "900", this is a finding.

Check Text ( C-16403r294066_chk )

If LDAP authentication is not required, this is Not Applicable.

Verify the "/etc/security/ldap/ldap.cfg" file to see if the following two keywords have a value that is greater than "900" seconds:

# grep -i usercachetimeout /etc/security/ldap/ldap.cfg
usercachetimeout: 900

# grep -i groupcachetimeout /etc/security/ldap/ldap.cfg
groupcachetimeout: 900

If any of the above keywords does not exist, is commented out, or any value of the above keywords are greater than "900", this is a finding.

Fix Text (F-16401r294067_fix)
Edit the "/etc/security/ldap/ldap.cfg" file to set the following two keywords to have value of "900": usercachetimeout groupcachetimeout Restart LDAP client using command: # /usr/sbin/restart-secldapclntd