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Category:   Application (Generic)  >   libungif Vendors:   libungif.sourceforge.net
(Red Hat Issues Fix for giflib) libungif NULL Pointer Dereference and Memory Access Error May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1022112
SecurityTracker URL:  http://securitytracker.com/id/1022112
CVE Reference:   CVE-2005-2974, CVE-2005-3350   (Links to External Site)
Date:  Apr 23 2009
Impact:   Denial of service via network, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 4.1.4
Description:   A vulnerability was reported in libungif. A remote user may be able to cause arbitrary code to be executed on the target system.

A remote user can create a specially crafted GIF image that, when processed by the target user, will cause the affected application to crash or potentially execute arbitrary code.

In one case, a specially crafted GIF image can trigger a NULL pointer dereference [CVE-2005-2974]. In another case, a specially crafted GIF image can trigger an out-of-bounds memory write access [CVE-2005-3350].

Applications that use libungif are affected.

Chris Evans and Daniel Eisenbud discovered these vulnerabilities.

Impact:   A remote user can create a file that, when processed, will cause the affected application to crash or execute arbitrary code.
Solution:   Red Hat has released a fix for giflib.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2009-0444.html

Vendor URL:  sourceforge.net/projects/libungif (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5

Message History:   This archive entry is a follow-up to the message listed below.
Nov 3 2005 libungif NULL Pointer Dereference and Memory Access Error May Let Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2009:0444-01] Important: giflib security update


-----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: giflib security update
Advisory ID:       RHSA-2009:0444-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2009-0444.html
Issue date:        2009-04-22
CVE Names:         CVE-2005-2974 CVE-2005-3350 
=====================================================================

1. Summary:

Updated giflib packages that fix several security issues are now available
for Red Hat Enterprise Linux 5.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

The giflib packages contain a shared library of functions for loading and
saving GIF image files. This library is API and ABI compatible with
libungif, the library that supported uncompressed GIF image files while the
Unisys LZW patent was in effect.

Several flaws were discovered in the way giflib decodes GIF images. An
attacker could create a carefully crafted GIF image that could cause an
application using giflib to crash or, possibly, execute arbitrary code when
opened by a victim. (CVE-2005-2974, CVE-2005-3350)

All users of giflib are advised to upgrade to these updated packages, which
contain backported patches to resolve these issues. All running
applications using giflib must be restarted for the update to take effect.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

494823 - CVE-2005-3350 giflib/libunfig: memory corruption via a crafted GIF
494826 - CVE-2005-2974 giflib/libunfig: NULL pointer dereference crash

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/giflib-4.1.3-7.1.el5_3.1.src.rpm

i386:
giflib-4.1.3-7.1.el5_3.1.i386.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.i386.rpm
giflib-utils-4.1.3-7.1.el5_3.1.i386.rpm

x86_64:
giflib-4.1.3-7.1.el5_3.1.i386.rpm
giflib-4.1.3-7.1.el5_3.1.x86_64.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.i386.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.x86_64.rpm
giflib-utils-4.1.3-7.1.el5_3.1.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/giflib-4.1.3-7.1.el5_3.1.src.rpm

i386:
giflib-debuginfo-4.1.3-7.1.el5_3.1.i386.rpm
giflib-devel-4.1.3-7.1.el5_3.1.i386.rpm

x86_64:
giflib-debuginfo-4.1.3-7.1.el5_3.1.i386.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.x86_64.rpm
giflib-devel-4.1.3-7.1.el5_3.1.i386.rpm
giflib-devel-4.1.3-7.1.el5_3.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/giflib-4.1.3-7.1.el5_3.1.src.rpm

i386:
giflib-4.1.3-7.1.el5_3.1.i386.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.i386.rpm
giflib-devel-4.1.3-7.1.el5_3.1.i386.rpm
giflib-utils-4.1.3-7.1.el5_3.1.i386.rpm

ia64:
giflib-4.1.3-7.1.el5_3.1.ia64.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.ia64.rpm
giflib-devel-4.1.3-7.1.el5_3.1.ia64.rpm
giflib-utils-4.1.3-7.1.el5_3.1.ia64.rpm

ppc:
giflib-4.1.3-7.1.el5_3.1.ppc.rpm
giflib-4.1.3-7.1.el5_3.1.ppc64.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.ppc.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.ppc64.rpm
giflib-devel-4.1.3-7.1.el5_3.1.ppc.rpm
giflib-devel-4.1.3-7.1.el5_3.1.ppc64.rpm
giflib-utils-4.1.3-7.1.el5_3.1.ppc.rpm

s390x:
giflib-4.1.3-7.1.el5_3.1.s390.rpm
giflib-4.1.3-7.1.el5_3.1.s390x.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.s390.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.s390x.rpm
giflib-devel-4.1.3-7.1.el5_3.1.s390.rpm
giflib-devel-4.1.3-7.1.el5_3.1.s390x.rpm
giflib-utils-4.1.3-7.1.el5_3.1.s390x.rpm

x86_64:
giflib-4.1.3-7.1.el5_3.1.i386.rpm
giflib-4.1.3-7.1.el5_3.1.x86_64.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.i386.rpm
giflib-debuginfo-4.1.3-7.1.el5_3.1.x86_64.rpm
giflib-devel-4.1.3-7.1.el5_3.1.i386.rpm
giflib-devel-4.1.3-7.1.el5_3.1.x86_64.rpm
giflib-utils-4.1.3-7.1.el5_3.1.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2974
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3350
http://www.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2009 Red Hat, Inc.
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