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Gentoo Linux Security Advisory                           GLSA 200503-17
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                                            https://security.gentoo.org/
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  Severity: Normal
     Title: libexif: Buffer overflow vulnerability
      Date: March 12, 2005
      Bugs: #84076
        ID: 200503-17

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Synopsis
=======
libexif fails to validate certain inputs, making it vulnerable to
buffer overflows.

Background
=========
libexif is a library for parsing, editing and saving EXIF data.

Affected packages
================
    -------------------------------------------------------------------
     Package             /   Vulnerable   /                 Unaffected
    -------------------------------------------------------------------
  1  media-libs/libexif      < 0.5.12-r1                  >= 0.5.12-r1

Description
==========
libexif contains a buffer overflow vulnerability in the EXIF tag
validation code. When opening an image with a specially crafted EXIF
tag, the lack of validation can cause applications linked to libexif to
crash.

Impact
=====
A specially crafted EXIF file could crash applications making use of
libexif, potentially allowing 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 libexif users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/libexif-0.5.12-r1"

References
=========
  [ 1 ] CAN-2005-0664
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0664

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

  https://security.gentoo.org/glsa/200503-17

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 2005 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/2.0/