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

Synopsis:          Critical: thunderbird security update
Advisory ID:       RHSA-2011:1343-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2011-1343.html
Issue date:        2011-09-28
CVE Names:         CVE-2011-2998 CVE-2011-2999 
=====================================================================

1. Summary:

An updated thunderbird package that fixes two security issues is now
available for Red Hat Enterprise Linux 4 and 5.

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:

RHEL Optional Productivity Applications (v. 5 server) - i386, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Description:

Mozilla Thunderbird is a standalone mail and newsgroup client.

A flaw was found in the way Thunderbird handled frame objects with certain
names. An attacker could use this flaw to cause a plug-in to grant its
content access to another site or the local file system, violating the
same-origin policy. (CVE-2011-2999)

An integer underflow flaw was found in the way Thunderbird handled large
JavaScript regular expressions. An HTML mail message containing malicious
JavaScript could cause Thunderbird to access already freed memory, causing
Thunderbird to crash or, potentially, execute arbitrary code with the
privileges of the user running Thunderbird. (CVE-2011-2998)

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/):

741904 - CVE-2011-2999 Mozilla: XSS via plugins and shadowed window.location object (MFSA 2011-38)
741924 - CVE-2011-2998 Mozilla: Integer underflow when using JavaScript RegExp (MFSA 2011-37)

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/thunderbird-1.5.0.12-44.el4.src.rpm

i386:
thunderbird-1.5.0.12-44.el4.i386.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.i386.rpm

ia64:
thunderbird-1.5.0.12-44.el4.ia64.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.ia64.rpm

ppc:
thunderbird-1.5.0.12-44.el4.ppc.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.ppc.rpm

s390:
thunderbird-1.5.0.12-44.el4.s390.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.s390.rpm

s390x:
thunderbird-1.5.0.12-44.el4.s390x.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.s390x.rpm

x86_64:
thunderbird-1.5.0.12-44.el4.x86_64.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/thunderbird-1.5.0.12-44.el4.src.rpm

i386:
thunderbird-1.5.0.12-44.el4.i386.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.i386.rpm

x86_64:
thunderbird-1.5.0.12-44.el4.x86_64.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/thunderbird-1.5.0.12-44.el4.src.rpm

i386:
thunderbird-1.5.0.12-44.el4.i386.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.i386.rpm

ia64:
thunderbird-1.5.0.12-44.el4.ia64.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.ia64.rpm

x86_64:
thunderbird-1.5.0.12-44.el4.x86_64.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/thunderbird-1.5.0.12-44.el4.src.rpm

i386:
thunderbird-1.5.0.12-44.el4.i386.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.i386.rpm

ia64:
thunderbird-1.5.0.12-44.el4.ia64.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.ia64.rpm

x86_64:
thunderbird-1.5.0.12-44.el4.x86_64.rpm
thunderbird-debuginfo-1.5.0.12-44.el4.x86_64.rpm

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/thunderbird-2.0.0.24-26.el5_7.src.rpm

i386:
thunderbird-2.0.0.24-26.el5_7.i386.rpm
thunderbird-debuginfo-2.0.0.24-26.el5_7.i386.rpm

x86_64:
thunderbird-2.0.0.24-26.el5_7.x86_64.rpm
thunderbird-debuginfo-2.0.0.24-26.el5_7.x86_64.rpm

RHEL Optional Productivity Applications (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/thunderbird-2.0.0.24-26.el5_7.src.rpm

i386:
thunderbird-2.0.0.24-26.el5_7.i386.rpm
thunderbird-debuginfo-2.0.0.24-26.el5_7.i386.rpm

x86_64:
thunderbird-2.0.0.24-26.el5_7.x86_64.rpm
thunderbird-debuginfo-2.0.0.24-26.el5_7.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-2011-2998.html
https://www.redhat.com/security/data/cve/CVE-2011-2999.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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