Details

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.

Solution

To set the X11Forwarding setting, add or correct the following line in ‘/etc/ssh/sshd_config’:

X11Forwarding no

Supportive Information

The following resource is also helpful.

• http://iasecontent.disa.mil/stigs/zip/U_VMware_vSphere_6-0_ESXi_V1R5_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.

References

• 800-53|CM-6b.
• CAT|II
• CCI|CCI-000366
• CSCv6|3.1
• Group-ID|V-63215
• Rule-ID|SV-77705r1_rule
• STIG-ID|ESXI-06-000023
• Vuln-ID|V-63215

Source

• Tenable.com/audits