All shell files must not have extended ACLs.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22366	GEN002230	SV-26013r1_rule	ECLP-1	Medium

Description
Shells with world/group-write permissions give the ability to maliciously modify the shell to obtain unauthorized access.

STIG	Date
VMware ESX 3 Server	2016-05-13

Details

Check Text ( C-27549r1_chk )
If /etc/shells exists, check the permissions of each shell referenced. # cat /etc/shells | xargs -n1 ls -lL Otherwise, check any shells found on the system. # find / -name "*sh" | xargs -n1 ls -lL If the permissions include a "+", the file has an extended ACL, this is a finding.

Fix Text (F-26219r1_fix)
Remove the extended ACL from the shell file(s).