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Category:   Application (Generic)  >   libexif Vendors:   libexif.sourceforge.net
(Red Hat Issues Fix) libexif Infinite Recursion Bug Permits Denial of Service Attacks and Integer Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1019125
SecurityTracker URL:  http://securitytracker.com/id/1019125
CVE Reference:   CVE-2007-6351, CVE-2007-6352   (Links to External Site)
Date:  Dec 19 2007
Impact:   Denial of service via network, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in libexif. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can cause denial of service conditions.

A remote user can create a specially crafted Exif image file that, when processed by the target application, will trigger an integer overflow and execute arbitrary code on the target system. The code will run with the privileges of the target application.

A remote user can also create a specially crafted Exif image file that, when processed by the target application, will cause the target application to crash.

exiv2 is also affected.
Impact:   A remote user can create a file that, when loaded by the target application, will execute arbitrary code on the target system or cause the target application to crash.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2007-1165.html
Vendor URL:  libexif.sourceforge.net/ (Links to External Site)
Cause:   Boundary error, State error
Underlying OS:   Linux (Red Hat Enterprise)

Message History:   This archive entry is a follow-up to the message listed below.
Dec 19 2007 libexif Infinite Recursion Bug Permits Denial of Service Attacks and Integer Overflow Lets Remote Users Execute Arbitrary Code


 Source Message Contents
Date:  Wed, 19 Dec 2007 10:48:43 -0500
Subject:  [RHSA-2007:1165-01] Moderate: libexif security update


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- ---------------------------------------------------------------------
                   Red Hat Security Advisory

Synopsis:          Moderate: libexif security update
Advisory ID:       RHSA-2007:1165-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2007-1165.html
Issue date:        2007-12-19
Updated on:        2007-12-19
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-2007-6351 CVE-2007-6352 
- ---------------------------------------------------------------------

1. Summary:

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

This update has been rated as having moderate 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. Problem description:

The libexif packages contain the Exif library. Exif is an image file format
specification that enables metadata tags to be added to existing JPEG, TIFF
and RIFF files. The Exif library makes it possible to parse an Exif file
and read this metadata.

An infinite recursion flaw was found in the way libexif parses Exif image
tags. If a victim opens a carefully crafted Exif image file, it could cause
the application linked against libexif to crash. (CVE-2007-6351)

An integer overflow flaw was found in the way libexif parses Exif image
tags. If a victim opens a carefully crafted Exif image file, it could cause
the application linked against libexif to execute arbitrary code, or crash.
(CVE-2007-6352)

Users of libexif are advised to upgrade to these updated packages, which
contain backported patches to resolve these issues.

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/FAQ_58_10188

5. Bug IDs fixed (http://bugzilla.redhat.com/):

425551 - CVE-2007-6351 libexif infinite recursion flaw (DoS)
425561 - CVE-2007-6352 libexif integer overflow

6. RPMs required:

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

SRPMS:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/libexif-0.6.13-4.0.2.el5_1.1.src.rpm
405b067a3ff329fd2f73b4edfd767837  libexif-0.6.13-4.0.2.el5_1.1.src.rpm

i386:
5f5e2fdebf5c7aeb88c4d25ce887edf3  libexif-0.6.13-4.0.2.el5_1.1.i386.rpm
2ec8f0b6652c4c55b3923d2e319a6ec1  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.i386.rpm

x86_64:
5f5e2fdebf5c7aeb88c4d25ce887edf3  libexif-0.6.13-4.0.2.el5_1.1.i386.rpm
91d485dd3c59491db18592d70a25a59a  libexif-0.6.13-4.0.2.el5_1.1.x86_64.rpm
2ec8f0b6652c4c55b3923d2e319a6ec1  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.i386.rpm
0a1a7b23c17e3dddb66022e1a039cebd  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

SRPMS:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/libexif-0.6.13-4.0.2.el5_1.1.src.rpm
405b067a3ff329fd2f73b4edfd767837  libexif-0.6.13-4.0.2.el5_1.1.src.rpm

i386:
2ec8f0b6652c4c55b3923d2e319a6ec1  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.i386.rpm
eccd0c4354faa72f1aac98e074c53b4e  libexif-devel-0.6.13-4.0.2.el5_1.1.i386.rpm

x86_64:
2ec8f0b6652c4c55b3923d2e319a6ec1  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.i386.rpm
0a1a7b23c17e3dddb66022e1a039cebd  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.x86_64.rpm
eccd0c4354faa72f1aac98e074c53b4e  libexif-devel-0.6.13-4.0.2.el5_1.1.i386.rpm
a4cd77aa35f9c6e302399e094ca66fef  libexif-devel-0.6.13-4.0.2.el5_1.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

SRPMS:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/libexif-0.6.13-4.0.2.el5_1.1.src.rpm
405b067a3ff329fd2f73b4edfd767837  libexif-0.6.13-4.0.2.el5_1.1.src.rpm

i386:
5f5e2fdebf5c7aeb88c4d25ce887edf3  libexif-0.6.13-4.0.2.el5_1.1.i386.rpm
2ec8f0b6652c4c55b3923d2e319a6ec1  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.i386.rpm
eccd0c4354faa72f1aac98e074c53b4e  libexif-devel-0.6.13-4.0.2.el5_1.1.i386.rpm

ia64:
d82e96851e21bad167757e92e702904f  libexif-0.6.13-4.0.2.el5_1.1.ia64.rpm
30b855e223e1dfd41e8eb7e47bf8944b  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.ia64.rpm
5e4041135eab0541826dd5332c2114a3  libexif-devel-0.6.13-4.0.2.el5_1.1.ia64.rpm

ppc:
1045dc0f0638a436e5fb27d46a7ac953  libexif-0.6.13-4.0.2.el5_1.1.ppc.rpm
78b8320d53f0e730eb9a7403e132605a  libexif-0.6.13-4.0.2.el5_1.1.ppc64.rpm
2325b01e76dd387150789182f9966f8b  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.ppc.rpm
d1d108e272a0db54b3d59731a9c1ce55  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.ppc64.rpm
70db0f13504d616e7cc33f38b4a308ca  libexif-devel-0.6.13-4.0.2.el5_1.1.ppc.rpm
5aa61322b25614936b3e0af6dbdd0770  libexif-devel-0.6.13-4.0.2.el5_1.1.ppc64.rpm

s390x:
a4ce630587f200dac5017132df1b32bd  libexif-0.6.13-4.0.2.el5_1.1.s390.rpm
e4e24274f53f54eafdab963c6827d26e  libexif-0.6.13-4.0.2.el5_1.1.s390x.rpm
63c098ac83e4dde2e57ccefb3220bcd2  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.s390.rpm
93cc0e5e78577be2ce118c329f27ca97  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.s390x.rpm
12a3e54a8e9d55063f504c68b0aee802  libexif-devel-0.6.13-4.0.2.el5_1.1.s390.rpm
2caf7997904ed6242a03c86522bdabfc  libexif-devel-0.6.13-4.0.2.el5_1.1.s390x.rpm

x86_64:
5f5e2fdebf5c7aeb88c4d25ce887edf3  libexif-0.6.13-4.0.2.el5_1.1.i386.rpm
91d485dd3c59491db18592d70a25a59a  libexif-0.6.13-4.0.2.el5_1.1.x86_64.rpm
2ec8f0b6652c4c55b3923d2e319a6ec1  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.i386.rpm
0a1a7b23c17e3dddb66022e1a039cebd  libexif-debuginfo-0.6.13-4.0.2.el5_1.1.x86_64.rpm
eccd0c4354faa72f1aac98e074c53b4e  libexif-devel-0.6.13-4.0.2.el5_1.1.i386.rpm
a4cd77aa35f9c6e302399e094ca66fef  libexif-devel-0.6.13-4.0.2.el5_1.1.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-2007-6351
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6352
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2007 Red Hat, Inc.
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