VMware vSphere ESXi 6.0 Security Technical Implementation Guide

The VMware vSphere ESXi 6.0 Security Technical Implementation Guide (V1 R5) has 108 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.

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Severity

Version

V1 · R5

CurrentPublished Fri Jan 25 2019

The SSH daemon must be configured to not allow X11 forwarding.

VMware vSphere ESXi 6.0 Security Technical Implementation Guide

Assessment Title

Rule Text

The SSH daemon must be configured to not allow X11 forwarding.

Description

Discussion Text

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.

New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.

Objective

V-63215

Rule

SV-77705r1_rule

Severity

medium

Rule Version

ESXI-06-000023

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

To verify the X11Forwarding setting, 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.

Implementation Procedure

Fix Text

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

X11Forwarding no

STIG check 23 of 108 in the VMware vSphere ESXi 6.0 STIG checklist

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