Moderate: thunderbird security update

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

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

Mozilla Thunderbird is a standalone mail and newsgroup client.

Several flaws were found in the processing of malformed HTML mail content.
An HTML mail message containing malicious content could cause Thunderbird
to crash or, potentially, execute arbitrary code as the user running
Thunderbird. (CVE-2009-0352, CVE-2009-0353, CVE-2009-0772, CVE-2009-0774,
CVE-2009-0775)

Several flaws were found in the way malformed content was processed. An
HTML mail message containing specially-crafted content could potentially
trick a Thunderbird user into surrendering sensitive information.
(CVE-2009-0355, CVE-2009-0776)

Note: JavaScript support is disabled by default in Thunderbird. None of
the above issues are exploitable unless JavaScript is enabled.

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.

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

483139 - CVE-2009-0352 Firefox layout crashes with evidence of memory corruption
483141 - CVE-2009-0353 Firefox javascript crashes with evidence of memory corruption
483143 - CVE-2009-0355 Firefox local file stealing with SessionStore
488273 - CVE-2009-0772 Firefox 2 and 3 - Layout engine crashes
488283 - CVE-2009-0774 Firefox 2 and 3 crashes in the JavaScript engine
488287 - CVE-2009-0775 Firefox XUL Linked Clones Double Free Vulnerability
488290 - CVE-2009-0776 Firefox XML data theft via RDFXMLDataSource and cross-domain redirect

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0352
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0353
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0355
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0772
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0774
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0775
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0776
http://www.redhat.com/security/updates/classification/#moderate