AIX must turn off X11 forwarding for the SSH daemon.
An XCCDF Rule
Description
<VulnDiscussion>X11 forwarding over SSH allows for the secure remote execution of X11-based applications. This feature can increase the attack surface of an SSH connection and should not be enabled unless needed.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-215300r508663_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Edit the "/etc/sshd/sshd_config" file to add the following line and save the change:
X11Forwarding no
Restart the SSH daemon:
# stopsrc -s sshd
# startsrc -s sshd