From: Raphael Marichez (falcogentoo.org)
Date: Sat May 05 2007 - 15:50:38 CDT

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Gentoo Linux Security Advisory GLSA 200705-06
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                                            http://security.gentoo.org/
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  Severity: High
     Title: X.Org X11 library: Multiple integer overflows
      Date: May 05, 2007
      Bugs: #172752
        ID: 200705-06

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Synopsis
========

The X.Org X11 library contains multiple integer overflows, which could
lead to the execution of arbitrary code.

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 < 1.0.3-r2 >= 1.0.3-r2

Description
===========

Multiple integer overflows have been reported in the XGetPixel()
function of the X.Org X11 library.

Impact
======

By enticing a user to open a specially crafted image, an attacker could
cause a Denial of Service or an integer overflow, potentially resulting
in the execution of arbitrary code with root privileges.

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/libX11-1.0.3-r2"

References
==========

  [ 1 ] CVE-2007-1667
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1667

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200705-06.xml

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
securitygentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 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.

http://creativecommons.org/licenses/by-sa/2.5

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