NIS/NIS+/yp command files must not have extended ACLs.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22318	GEN001361	SV-64503r1_rule		Medium

Description
NIS/NIS+/yp files are part of the system's identification and authentication processes and are critical to system security. ACLs on these files could result in unauthorized modification, which could compromise these processes and the system.

STIG	Date
Oracle Linux 5 Security Technical Implementation Guide	2020-02-25

Details

Check Text ( C-52919r1_chk )
Verify NIS/NIS+/yp files have no extended ACLs. # ls -lL /var/yp/* 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-55097r1_fix)
Remove the extended ACL from the file. # setfacl --remove-all /var/yp/*