From: Thomas Deutschmann <whissi@gentoo.org>
To: gentoo-announce@lists.gentoo.org
Subject: [gentoo-announce] [ GLSA 202105-16 ] X.Org X11 library: Denial of service
Date: Wed, 26 May 2021 10:47:02 +0200 [thread overview]
Message-ID: <5e3a482e-82a2-b11b-66df-e2d029975209@gentoo.org> (raw)
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Gentoo Linux Security Advisory GLSA 202105-16
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https://security.gentoo.org/
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Severity: Low
Title: X.Org X11 library: Denial of service
Date: May 26, 2021
Bugs: #790824
ID: 202105-16
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Synopsis
========
A vulnerability in X.Org X11 library could lead to a Denial of Service
condition.
Background
==========
X.Org is an implementation of the X Window System. The X.Org X11
library provides the X11 protocol library files.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 x11-libs/libX11 < 1.7.1 >= 1.7.1
Description
===========
It was discovered that XLookupColor() and other X.Org X11 library
functions lacked proper validation of the length of their string
parameters.
Impact
======
An attacker could emit arbitrary X protocol requests to the X server
through malicious crafted string parameters in applications linked
against X.Org X11 library.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All X.Org X11 library users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-libs/libX11-1.7.1"
References
==========
[ 1 ] CVE-2021-31535
https://nvd.nist.gov/vuln/detail/CVE-2021-31535
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202105-16
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.
License
=======
Copyright 2021 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5
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