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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Critical: thunderbird security update
Advisory ID:       RHSA-2011:0886-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-0886.html
Issue date:        2011-06-21
CVE Names:         CVE-2011-0083 CVE-2011-0085 CVE-2011-2362 
                   CVE-2011-2363 CVE-2011-2364 CVE-2011-2365 
                   CVE-2011-2374 CVE-2011-2375 CVE-2011-2376 
                   CVE-2011-2377 
=====================================================================

1. Summary:

An updated thunderbird package that fixes several security issues is now
available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having critical
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links 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 flaw was found in the way Thunderbird handled malformed JPEG images. An
HTML mail message containing a malicious JPEG image could cause Thunderbird
to crash or, potentially, execute arbitrary code with the privileges of the
user running Thunderbird. (CVE-2011-2377)

Multiple dangling pointer flaws were found in Thunderbird. Malicious HTML
content could cause Thunderbird to crash or, potentially, execute arbitrary
code with the privileges of the user running Thunderbird. (CVE-2011-0083,
CVE-2011-0085, CVE-2011-2363)

Several flaws were found in the processing of malformed HTML content.
Malicious HTML content could cause Thunderbird to crash or, potentially,
execute arbitrary code with the privileges of the user running Thunderbird.
(CVE-2011-2364, CVE-2011-2365, CVE-2011-2374, CVE-2011-2375, CVE-2011-2376)

It was found that Thunderbird could treat two separate cookies (for web
content) as interchangeable if both were for the same domain name but one
of those domain names had a trailing "." character. This violates the
same-origin policy and could possibly lead to data being leaked to the
wrong domain. (CVE-2011-2362)

All Thunderbird users should upgrade to this updated package, which
resolves these issues. All running instances of Thunderbird must be
restarted for the update 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/):

714576 - CVE-2011-2364, CVE-2011-2365, CVE-2011-2374, CVE-2011-2375, CVE-2011-2376 Mozilla Miscellaneous memory safety hazards (MFSA 2011-19)
714581 - CVE-2011-0083 CVE-2011-0085 CVE-2011-2363 Mozilla Multiple dangling pointer vulnerabilities (MFSA 2011-23)
714583 - CVE-2011-2362 Mozilla Cookie isolation error (MFSA 2011-24)
714929 - CVE-2011-2377 Mozilla Crash caused by corrupted JPEG image (MFSA 2011-21)

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/thunderbird-3.1.11-2.el6_1.src.rpm

i386:
thunderbird-3.1.11-2.el6_1.i686.rpm
thunderbird-debuginfo-3.1.11-2.el6_1.i686.rpm

x86_64:
thunderbird-3.1.11-2.el6_1.x86_64.rpm
thunderbird-debuginfo-3.1.11-2.el6_1.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-3.1.11-2.el6_1.src.rpm

i386:
thunderbird-3.1.11-2.el6_1.i686.rpm
thunderbird-debuginfo-3.1.11-2.el6_1.i686.rpm

ppc64:
thunderbird-3.1.11-2.el6_1.ppc64.rpm
thunderbird-debuginfo-3.1.11-2.el6_1.ppc64.rpm

s390x:
thunderbird-3.1.11-2.el6_1.s390x.rpm
thunderbird-debuginfo-3.1.11-2.el6_1.s390x.rpm

x86_64:
thunderbird-3.1.11-2.el6_1.x86_64.rpm
thunderbird-debuginfo-3.1.11-2.el6_1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/thunderbird-3.1.11-2.el6_1.src.rpm

i386:
thunderbird-3.1.11-2.el6_1.i686.rpm
thunderbird-debuginfo-3.1.11-2.el6_1.i686.rpm

x86_64:
thunderbird-3.1.11-2.el6_1.x86_64.rpm
thunderbird-debuginfo-3.1.11-2.el6_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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2011-0083.html
https://www.redhat.com/security/data/cve/CVE-2011-0085.html
https://www.redhat.com/security/data/cve/CVE-2011-2362.html
https://www.redhat.com/security/data/cve/CVE-2011-2363.html
https://www.redhat.com/security/data/cve/CVE-2011-2364.html
https://www.redhat.com/security/data/cve/CVE-2011-2365.html
https://www.redhat.com/security/data/cve/CVE-2011-2374.html
https://www.redhat.com/security/data/cve/CVE-2011-2375.html
https://www.redhat.com/security/data/cve/CVE-2011-2376.html
https://www.redhat.com/security/data/cve/CVE-2011-2377.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 2011 Red Hat, Inc.
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