Issued:

2011-06-21

Updated:

2011-06-21

RHSA-2011:0887 - Critical: thunderbird security update

Synopsis

Critical: thunderbird security update

Type/Severity

Security Advisory Critical

Topic

An updated thunderbird package that fixes several 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.

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)

An integer overflow flaw was found in the way Thunderbird handled JavaScript Array objects. Malicious content could cause Thunderbird to execute JavaScript with the privileges of the user running Thunderbird. (CVE-2011-2371)

A use-after-free flaw was found in the way Thunderbird handled malformed JavaScript. Malicious content could cause Thunderbird to execute JavaScript with the privileges of the user running Thunderbird. (CVE-2011-2373)

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.

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 This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

Updated Packages

• thunderbird-1.5.0.12-39.el4.s390x.rpm
• thunderbird-2.0.0.24-18.el5_6.src.rpm
• thunderbird-2.0.0.24-18.el5_6.x86_64.rpm
• thunderbird-2.0.0.24-18.el5_6.i386.rpm
• thunderbird-1.5.0.12-39.el4.ia64.rpm
• thunderbird-1.5.0.12-39.el4.src.rpm
• thunderbird-1.5.0.12-39.el4.ppc.rpm
• thunderbird-1.5.0.12-39.el4.s390.rpm
• thunderbird-1.5.0.12-39.el4.x86_64.rpm
• thunderbird-1.5.0.12-39.el4.i386.rpm

Fixes

• This content is not included.BZ - 714576
• This content is not included.BZ - 714577
• This content is not included.BZ - 714580
• This content is not included.BZ - 714581
• This content is not included.BZ - 714583
• This content is not included.BZ - 714929

CVEs

• CVE-2011-0085
• CVE-2011-0083
• CVE-2011-2364
• CVE-2011-2365
• CVE-2011-2362
• CVE-2011-2363
• CVE-2011-2373
• CVE-2011-2371
• CVE-2011-2377
• CVE-2011-2376
• CVE-2011-2375
• CVE-2011-2374
• CVE-2011-2605

References

• https://access.redhat.com/security/updates/classification/#critical

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.