Check: ESXI-67-000023
VMware vSphere 6.7 ESXi STIG:
ESXI-67-000023
(in versions v1 r3 through v1 r1)
Title
The ESXi host SSH daemon must be configured to not allow X11 forwarding. (Cat II impact)
Discussion
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.
Check Content
From an SSH session connected to the ESXi host, or from the ESXi shell, run the following command: # grep -i "^X11Forwarding" /etc/ssh/sshd_config If there is no output or the output is not exactly "X11Forwarding no", this is a finding.
Fix Text
From an SSH session connected to the ESXi host, or from the ESXi shell, add or correct the following line in "/etc/ssh/sshd_config": X11Forwarding no
Additional Identifiers
Rule ID: SV-239278r674763_rule
Vulnerability ID: V-239278
Group Title: SRG-OS-000480-VMM-002000
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000366 |
The organization implements the security configuration settings. |
Controls
Number | Title |
---|---|
CM-6 |
Configuration Settings |