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

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000225

SV-62983r1_rule The /etc/sysctl.conf file must not have an extended ACL.

Vulnerability discussion

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

Check content

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

Remove the extended ACL from the file. # setfacl --remove-all /etc/sysctl.conf

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