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

Synopsis:          Critical: thunderbird security update
Advisory ID:       RHSA-2011:1439-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-1439.html
Issue date:        2011-11-08
CVE Names:         CVE-2011-3647 CVE-2011-3648 CVE-2011-3650 
=====================================================================

1. Summary:

An updated thunderbird package that fixes multiple 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 certain add-ons. Malicious,
remote content could cause an add-on to elevate its privileges, which could
lead to arbitrary code execution with the privileges of the user running
Thunderbird. (CVE-2011-3647)

A cross-site scripting (XSS) flaw was found in the way Thunderbird handled
certain multibyte character sets. Malicious, remote content could cause
Thunderbird to run JavaScript code with the permissions of different
remote content. (CVE-2011-3648)

A flaw was found in the way Thunderbird handled large JavaScript scripts.
Malicious, remote content could cause Thunderbird to crash or, potentially,
execute arbitrary code with the privileges of the user running Thunderbird.
(CVE-2011-3650)

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/):

751931 - CVE-2011-3647 Mozilla: Security problem with loadSubScript on 1.9.2 branch (MFSA 2011-46)
751932 - CVE-2011-3648 Mozilla: Universal XSS likely with MultiByte charset (MFSA 2011-47)
751933 - CVE-2011-3650 Mozilla: crash while profiling page with many functions (MFSA 2011-49)

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/thunderbird-3.1.16-2.el6_1.src.rpm

i386:
thunderbird-3.1.16-2.el6_1.i686.rpm
thunderbird-debuginfo-3.1.16-2.el6_1.i686.rpm

x86_64:
thunderbird-3.1.16-2.el6_1.x86_64.rpm
thunderbird-debuginfo-3.1.16-2.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-3.1.16-2.el6_1.src.rpm

i386:
thunderbird-3.1.16-2.el6_1.i686.rpm
thunderbird-debuginfo-3.1.16-2.el6_1.i686.rpm

ppc64:
thunderbird-3.1.16-2.el6_1.ppc64.rpm
thunderbird-debuginfo-3.1.16-2.el6_1.ppc64.rpm

s390x:
thunderbird-3.1.16-2.el6_1.s390x.rpm
thunderbird-debuginfo-3.1.16-2.el6_1.s390x.rpm

x86_64:
thunderbird-3.1.16-2.el6_1.x86_64.rpm
thunderbird-debuginfo-3.1.16-2.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-3.1.16-2.el6_1.src.rpm

i386:
thunderbird-3.1.16-2.el6_1.i686.rpm
thunderbird-debuginfo-3.1.16-2.el6_1.i686.rpm

x86_64:
thunderbird-3.1.16-2.el6_1.x86_64.rpm
thunderbird-debuginfo-3.1.16-2.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-2011-3647.html
https://www.redhat.com/security/data/cve/CVE-2011-3648.html
https://www.redhat.com/security/data/cve/CVE-2011-3650.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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