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CVE-2018-14665

Publication date 25 October 2018

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.6 · Medium

Score breakdown

A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.

Read the notes from the security team

Status

Package Ubuntu Release Status
xorg 18.10 cosmic
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
xorg-hwe-16.04 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
xorg-server 18.10 cosmic
Fixed 2:1.20.1-3ubuntu2.1
18.04 LTS bionic
Fixed 2:1.19.6-1ubuntu4.2
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
xorg-server-hwe-16.04 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Fixed 2:1.19.6-1ubuntu4.1~16.04.2
14.04 LTS trusty Not in release
xorg-server-lts-utopic 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-vivid 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-wily 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
xorg-server-lts-xenial 18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

Notes

mdeslaur

xorg server is actually the xorg-server package the xorg package only contains docs introduced by: https://gitlab.freedesktop.org/xorg/xserver/commit/032b1d79b7

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
xorg-server

Severity score breakdown

Parameter Value
Base score 6.6 · Medium
Attack vector Physical
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3802-1
    • X.Org X server vulnerability
    • 26 October 2018

Other references