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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22596	GEN000000-LNX00530	SV-26999r1_rule	ECLP-1	Medium

Description
The sysctl.conf file specifies the values for kernel parameters to be set on boot. These settings can affect the system's security.

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

Details

Check Text ( C-35992r3_chk )
Check the permissions of the file. # ls -lL /etc/sysctl.conf If the permissions of the file or directory contain a '+', an extended ACL is present. If the file has an extended ACL and it has not been documented with the IAO, this is a finding.

Fix Text (F-24265r1_fix)
Remove the extended ACL from the file. # setfacl --remove-all /etc/sysctl.conf