The /etc/nsswitch.conf file must not have an extended ACL.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22330	GEN001374	SV-37334r1_rule	ECLP-1	Medium

Description
The nsswitch.conf file (or equivalent) configures the source of a variety of system security information including account, group, and host lookups. Malicious changes could prevent the system from functioning or compromise system security.

STIG	Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide	2017-03-01

Details

Check Text ( C-36025r1_chk )
Verify /etc/nsswitch.conf has no extended ACL. # ls -l /etc/nsswitch.conf If the permissions include a '+', the file has an extended ACL. If the file has an extended ACL and it has not been documented with the IAO, this is a finding.

Fix Text (F-23607r1_fix)
Remove the extended ACL from the file. # setfacl --remove-all /etc/nsswitch.conf