(Red Hat Issues Fix for Mozilla Thunderbird) libpng Chunk Decompression Heap Overflow Lets Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1026701 |
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SecurityTracker URL: http://securitytracker.com/id/1026701
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CVE Reference:
CVE-2011-3026
(Links to External Site)
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Date: Feb 17 2012
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Impact:
Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Description:
A vulnerability was reported in libpng. A remote user can cause arbitrary code to be executed on the target user's system. Mozilla Thunderbird is affected.
The software does not properly verify a size value when allocating memory during chunk decompression. A remote user can create a specially crafted PNG image file that, when loaded by the target user or application, will trigger a heap overflow in png_decompress_chunk() and execute arbitrary code on the target system. The code will run with the privileges of the target user or application.
The vulnerability resides in 'pngrutil.c'.
Jueri Aedla reported this vulnerability.
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Impact:
A remote user can create a PNG image file that, when loaded by the target user or application, will execute arbitrary code on the target system.
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Solution:
Red Hat has issued a fix for Mozilla Thunderbird.
The Red Hat advisory is available at:
https://rhn.redhat.com/errata/RHSA-2012-0140.html
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Cause:
Boundary error
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Underlying OS:
Linux (Red Hat Enterprise)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Thu, 16 Feb 2012 19:21:13 +0000
Subject: [RHSA-2012:0140-01] Critical: thunderbird security update
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Critical: thunderbird security update
Advisory ID: RHSA-2012:0140-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0140.html
Issue date: 2012-02-16
CVE Names: CVE-2011-3026
=====================================================================
1. Summary:
An updated thunderbird package that fixes one security issue is now
available for Red Hat Enterprise Linux 6.
The Red Hat Security Response Team has rated this update as having critical
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
3. Description:
Mozilla Thunderbird is a standalone mail and newsgroup client.
A heap-based buffer overflow flaw was found in the way Thunderbird handled
PNG (Portable Network Graphics) images. An HTML mail message or remote
content containing a specially-crafted PNG image could cause Thunderbird to
crash or, possibly, execute arbitrary code with the privileges of the user
running Thunderbird. (CVE-2011-3026)
All Thunderbird users should upgrade to this updated package, which
corrects this issue. After installing the update, Thunderbird must be
restarted for the changes to take effect.
4. Solution:
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
5. Bugs fixed (http://bugzilla.redhat.com/):
790737 - CVE-2011-3026 libpng: Heap-buffer-overflow in png_decompress_chunk
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/thunderbird-3.1.18-2.el6_2.src.rpm
i386:
thunderbird-3.1.18-2.el6_2.i686.rpm
thunderbird-debuginfo-3.1.18-2.el6_2.i686.rpm
x86_64:
thunderbird-3.1.18-2.el6_2.x86_64.rpm
thunderbird-debuginfo-3.1.18-2.el6_2.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/thunderbird-3.1.18-2.el6_2.src.rpm
i386:
thunderbird-3.1.18-2.el6_2.i686.rpm
thunderbird-debuginfo-3.1.18-2.el6_2.i686.rpm
ppc64:
thunderbird-3.1.18-2.el6_2.ppc64.rpm
thunderbird-debuginfo-3.1.18-2.el6_2.ppc64.rpm
s390x:
thunderbird-3.1.18-2.el6_2.s390x.rpm
thunderbird-debuginfo-3.1.18-2.el6_2.s390x.rpm
x86_64:
thunderbird-3.1.18-2.el6_2.x86_64.rpm
thunderbird-debuginfo-3.1.18-2.el6_2.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/thunderbird-3.1.18-2.el6_2.src.rpm
i386:
thunderbird-3.1.18-2.el6_2.i686.rpm
thunderbird-debuginfo-3.1.18-2.el6_2.i686.rpm
x86_64:
thunderbird-3.1.18-2.el6_2.x86_64.rpm
thunderbird-debuginfo-3.1.18-2.el6_2.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://access.redhat.com/security/team/key/#package
7. References:
https://www.redhat.com/security/data/cve/CVE-2011-3026.html
https://access.redhat.com/security/updates/classification/#critical
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2012 Red Hat, Inc.
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