Ubuntu 22.04 LTS must restrict access to the kernel message buffer.
An XCCDF Rule
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-260472r958524_rule
- Version
- UBTU-22-213010
- Severity
- Low
- References
- Updated
Remediation Templates
A Manual Procedure
Configure Ubuntu 22.04 LTS to restrict access to the kernel message buffer.
Add or modify the following line in the "/etc/sysctl.conf" file:
kernel.dmesg_restrict = 1