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Gentoo: GLSA-202201-05 Critical: X.Org X Server Security Vulnerability

gentoo
Calendar Grey October 30, 2018
Dist Gentoo Esm H88
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A vulnerability in X.Org X Server allows local users to escalate privileges.

Summary

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.

Topics%20covered

Topics Covered

security advisory Gentoo privilege escalation high risk X.Org X Server

Resolution

All X.Org X Server users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.20.3"

References

[ 1 ] CVE-2018-14665 https://nvd.nist.gov/vuln/detail/CVE-2018-14665

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201810-09
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: High
Title: X.Org X Server: Privilege escalation
Date: October 30, 2018
Bugs: #669588
ID: 201810-09

Topics%20covered

Topics Covered

security advisory Gentoo privilege escalation high risk X.Org X Server

Synopsis

A vulnerability in X.Org X Server allows local users to escalate privileges.

Background

The X Window System is a graphical windowing system based on a client/server model.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 x11-base/xorg-server < 1.20.3 >= 1.20.3

Impact

===== A local attacker can escalate privileges to root by passing crafted parameters to the X.org X server.

Workaround

There is no known workaround at this time.

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