Ubuntu 22.04 LTS must restrict access to the kernel message buffer.
An XCCDF Rule
Description
<VulnDiscussion>Restricting access to the kernel message buffer limits access only to root. This prevents attackers from gaining additional system information as a nonprivileged user.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-260472r958524_rule
- Severity
- Low
- References
- Updated
Remediation - 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