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Gentoo Linux Security Advisory                           GLSA 201006-02
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: CamlImages: User-assisted execution of arbitrary code
      Date: June 01, 2010
      Bugs: #276235, #290222
        ID: 201006-02

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Synopsis
========

Multiple integer overflows in CamlImages might result in the remote
execution of arbitrary code.

Background
==========

CamlImages is an image processing library for Objective Caml.

Affected packages
=================

    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  dev-ml/camlimages       < 3.0.2                          >= 3.0.2

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

Tielei Wang reported multiple integer overflows, possibly leading to
heap-based buffer overflows in the (1) read_png_file() and
read_png_file_as_rgb24() functions, when processing a PNG image
(CVE-2009-2295) and (2) gifread.c and jpegread.c files when processing
GIF or JPEG images (CVE-2009-2660).

Other integer overflows were also found in tiffread.c (CVE-2009-3296).

Impact
======

A remote attacker could entice a user to open a specially crafted,
overly large PNG, GIF, TIFF, or JPEG image using an application that
uses the CamlImages library, possibly resulting in the execution of
arbitrary code with the privileges of the user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All CamlImages users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose =dev-ml/camlimages-3.0.2

References
==========

  [ 1 ] CVE-2009-2295
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2295
  [ 2 ] CVE-2009-2660
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2660
  [ 3 ] CVE-2009-3296
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3296

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

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

  http://security.gentoo.org/glsa/glsa-201006-02.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
https://bugs.gentoo.org.

License
=======

Copyright 2010 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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