Gentoo Logo
Gentoo Spaceship




Note: Due to technical difficulties, the Archives are currently not up to date. GMANE provides an alternative service for most mailing lists.
c.f. bug 424647
List Archive: gentoo-announce
Navigation:
Lists: gentoo-announce: < Prev By Thread Next > < Prev By Date Next >
Headers:
To: gentoo-announce@g.o
From: Raphael Marichez <falco@g.o>
Subject: [ GLSA 200706-01 ] libexif: Integer overflow vulnerability
Date: Tue, 5 Jun 2007 20:58:32 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200706-01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: Normal
     Title: libexif: Integer overflow vulnerability
      Date: June 05, 2007
      Bugs: #178081
        ID: 200706-01

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

Synopsis
========

libexif fails to handle Exif (EXchangeable Image File) data inputs,
making it vulnerable to an integer overflow.

Background
==========

libexif is a library for parsing, editing and saving Exif data.

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

    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  media-libs/libexif      < 0.6.15                        >= 0.6.15

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

Victor Stinner reported an integer overflow in the
exif_data_load_data_entry() function from file exif-data.c while
handling Exif data.

Impact
======

An attacker could entice a user to process a file with specially
crafted Exif extensions with an application making use of libexif,
which will trigger the integer overflow and potentially execute
arbitrary code or crash the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libexif users should upgrade to the latest version. Please note
that users upgrading from "<=media-libs/libexif-0.6.13" should also run
revdep-rebuild after their upgrade.

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/libexif-0.6.15"
    # revdep-rebuild --library=/usr/lib/libexif.so

References
==========

  [ 1 ] CVE-2007-2645
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2645

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

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

  http://security.gentoo.org/glsa/glsa-200706-01.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@g.o 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
Attachment:
pgpr3ZEwq0tMf.pgp (PGP signature)
Navigation:
Lists: gentoo-announce: < Prev By Thread Next > < Prev By Date Next >
Previous by thread:
[ GLSA 200705-25 ] file: Integer overflow
Next by thread:
[ GLSA 200706-02 ] Evolution: User-assisted execution of arbitrary code
Previous by date:
[ GLSA 200705-25 ] file: Integer overflow
Next by date:
[ GLSA 200706-02 ] Evolution: User-assisted execution of arbitrary code


Updated Jun 17, 2009

Summary: Archive of the gentoo-announce mailing list.

Donate to support our development efforts.

Copyright 2001-2013 Gentoo Foundation, Inc. Questions, Comments? Contact us.