All global initialization files must not have extended ACLs.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22356	GEN001730	SV-63867r1_rule		Medium

Description
Global initialization files are used to configure the user's shell environment upon login. Malicious modification of these files could compromise accounts upon logon.

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

Details

Check Text ( C-52407r1_chk )
Check global initialization files for extended ACLs: # ls -l /etc/bashrc /etc/csh.cshrc /etc/csh.login /etc/csh.logout /etc/environment /etc/ksh.kshrc /etc/profile /etc/suid_profile /etc/profile.d/* 2>null|grep "\+ " 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-54441r1_fix)
Remove the extended ACL from the file. # ls -l etc/bashrc /etc/csh.cshrc /etc/csh.login /etc/csh.logout /etc/environment /etc/ksh.kshrc /etc/profile /etc/suid_profile /etc/profile.d/* 2>null|grep "\+ "|sed "s/^.* \///g"|xargs setfacl --remove-all