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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
security@gentoo.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