Visit our newest sister site!
Hundreds of free aircraft flight manuals
Civilian • Historical • Military • Declassified • FREE!


TUCoPS :: Linux :: Apps A-M :: tb11444.htm

libexif: Buffer overflow



libexif: Buffer overflow
libexif: Buffer overflow




--lrZ03NoBR/3+SXJZ
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200706-09
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/ 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: Normal
     Title: libexif: Buffer overflow
      Date: June 26, 2007
      Bugs: #181922
        ID: 200706-09

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
=======
libexif does not properly handle image EXIF information, possibly
allowing for the execution of arbitrary code.

Background
=========
libexif is a library for parsing, editing and saving EXIF metadata from
images.

Affected packages
================
    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  media-libs/libexif      < 0.6.16                        >= 0.6.16

Description
==========
iDefense Labs have discovered that the exif_data_load_data_entry()
function in libexif/exif-data.c improperly handles integer data while
working with an image with many EXIF components, allowing an integer
overflow possibly leading to a heap-based buffer overflow.

Impact
=====
An attacker could entice a user of an application making use of a
vulnerable version of libexif to load a specially crafted image file,
possibly resulting in a crash of the application or the execution of
arbitrary code with the rights 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-0.6.16"

References
=========
  [ 1 ] CVE-2006-4168
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4168 

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

http://security.gentoo.org/glsa/glsa-200706-09.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 

--lrZ03NoBR/3+SXJZ
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (GNU/Linux)

iQEVAwUBRoGDejvRww8BFPxFAQI3TQf/abZeouCwhMucF//nUXenNE94dMAnBjlM
XIB3XD+3T1ygMJB56NsTXPG3FdjP3T3noZOYAK53J0ZVr7jYh59pFguzPhyPX94L
w0vo1rz49XaPTNy3HIHYMb9hpklVmG2no9DQvDtvHGsq/mZXPAgaAqa7puIvl6ut
ASgvSg72cS+yMLmw2SgKYONbPofu75x9ERsADjptwvz+k6RJAYUxMC8RXqOdmStl
f5LKLhJIGmFjHGpu5KTos2nBw/LEGlTU30gdKIOHpA9qkXOXiANYDks9K88eCCKe
KX4tF3jkBUAaWPHmD7gCfJH1U57SELmnIFmu/mO+GS2eXJhZ8LL83Q==GI7V
-----END PGP SIGNATURE-----

--lrZ03NoBR/3+SXJZ--


TUCoPS is optimized to look best in Firefox® on a widescreen monitor (1440x900 or better).
Site design & layout copyright © 1986-2014 AOH