The Photon operating system must restrict access to the kernel message buffer.

An XCCDF Rule

Details
Profiles

Description

Restricting access to the kernel message buffer limits access only to root. This prevents attackers from gaining additional system information as a nonprivileged user.

ID: SV-258828r958524_rule
Version: PHTN-40-000067
Severity: Medium
References: CCI-001090
Updated: about 2 months ago

Remediation Templates

Navigate to and open:

/etc/sysctl.d/zz-stig-hardening.conf

Add or update the following line:
kernel.dmesg_restrict = 1

At the command line, run the following command to load the new configuration:

# /sbin/sysctl --load /etc/sysctl.d/zz-stig-hardening.conf

Note: If the file zz-stig-hardening.conf does not exist, it must be created.

The Photon operating system must restrict access to the kernel message buffer.

Description

Remediation Templates

A Manual Procedure