Gentoo: GLSA-202105-16: X.Org X11 library: Denial of service | Linu...

Advisories

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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
[email protected] 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

Gentoo: GLSA-202105-16: X.Org X11 library: Denial of service

Summary

It was discovered that XLookupColor() and other X.Org X11 library functions lacked proper validation of the length of their string parameters.

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 [email protected] or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity
Severity: Low
Title: X.Org X11 library: Denial of service
Issued Date: May 26, 2021
Bugs: #790824
ID: 202105-16

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

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.

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