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CCE
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CCE-91233-7

Platform: cpe:/o:ubuntu:ubuntu_linux:14.04Date: (C)2017-03-14   (M)2023-07-04



Disable SSH X11 Forwarding (Scored) The X11Forwarding parameter provides the ability to tunnel X11 traffic through the connection to enable remote graphic connections.


Parameter:

[enable/disable]


Technical Mechanism:

Disable X11 forwarding unless there is an operational requirement to use X11 applications directly. There is a small risk that the remote X11 servers of users who are logged in via SSH with X11 forwarding could be compromised by other users on the X11 server. Note that even if X11 forwarding is disabled, users can always install their own forwarders. Fix: Edit the /etc/ssh/sshd_config file to set the parameter as follows: X11Forwarding no

CCSS Severity:CCSS Metrics:
CCSS Score : 7.0Attack Vector: LOCAL
Exploit Score: 1.0Attack Complexity: HIGH
Impact Score: 5.9Privileges Required: LOW
Severity: HIGHUser Interaction: NONE
Vector: AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HScope: UNCHANGED
 Confidentiality: HIGH
 Integrity: HIGH
 Availability: HIGH
  

References:
Resource IdReference
SCAP Repo OVAL Definitionoval:org.secpod.oval:def:33931


OVAL    1
oval:org.secpod.oval:def:33931
XCCDF    1
xccdf_org.secpod_benchmark_general_Ubuntu_14_04

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