Moderate: thunderbird security update

Updated thunderbird packages that fix a security issue are now available
for Red Hat Enterprise Linux 4 and Red Hat Enterprise Linux 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.

Multiple flaws were found in the processing of malformed JavaScript
content. An HTML mail containing such malicious content could cause
Thunderbird to crash or, potentially, execute arbitrary code as the user
running Thunderbird. (CVE-2008-2801, CVE-2008-2802, CVE-2008-2803)

Several flaws were found in the processing of malformed HTML content. An
HTML mail containing malicious content could cause Thunderbird to crash or,
potentially, execute arbitrary code as the user running Thunderbird.
(CVE-2008-2785, CVE-2008-2798, CVE-2008-2799, CVE-2008-2811)

Several flaws were found in the way malformed HTML content was displayed.
An HTML mail containing specially-crafted content could, potentially, trick
a Thunderbird user into surrendering sensitive information. (CVE-2008-2800)

Two local file disclosure flaws were found in Thunderbird. An HTML mail
containing malicious content could cause Thunderbird to reveal the contents
of a local file to a remote attacker. (CVE-2008-2805, CVE-2008-2810)

A flaw was found in the way a malformed .properties file was processed by
Thunderbird. A malicious extension could read uninitialized memory,
possibly leaking sensitive data to the extension. (CVE-2008-2807)

A flaw was found in the way Thunderbird escaped a listing of local file
names. If a user could be tricked into listing a local directory containing
malicious file names, arbitrary JavaScript could be run with the
permissions of the user running Thunderbird. (CVE-2008-2808)

A flaw was found in the way Thunderbird displayed information about
self-signed certificates. It was possible for a self-signed certificate to
contain multiple alternate name entries, which were not all displayed to
the user, allowing them to mistakenly extend trust to an unknown site.
(CVE-2008-2809)

Note: JavaScript support is disabled by default in Thunderbird. The above
issues are not exploitable unless JavaScript is enabled.

All Thunderbird users should upgrade to these updated packages, which
contain backported patches to resolve these issues.

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/FAQ_58_10188

452204 - CVE-2008-2785 mozilla: CSS reference counter overflow (ZDI-CAN-349)
452597 - CVE-2008-2798 Firefox malformed web content flaws
452598 - CVE-2008-2799 Firefox javascript arbitrary code execution
452599 - CVE-2008-2800 Firefox XSS attacks
452600 - CVE-2008-2802 Firefox arbitrary JavaScript code execution
452602 - CVE-2008-2803 Firefox javascript arbitrary code execution
452604 - CVE-2008-2805 Firefox arbitrary file disclosure
452605 - CVE-2008-2801 Firefox arbitrary signed JAR code execution
452709 - CVE-2008-2807 Firefox .properties memory leak
452710 - CVE-2008-2808 Firefox file location escaping flaw
452711 - CVE-2008-2809 Firefox self signed certificate flaw
452712 - CVE-2008-2810 Firefox arbitrary file disclosure
453007 - CVE-2008-2811 Firefox block reflow flaw

https://www.redhat.com/security/data/cve/CVE-2008-2785.html
https://www.redhat.com/security/data/cve/CVE-2008-2798.html
https://www.redhat.com/security/data/cve/CVE-2008-2799.html
https://www.redhat.com/security/data/cve/CVE-2008-2800.html
https://www.redhat.com/security/data/cve/CVE-2008-2801.html
https://www.redhat.com/security/data/cve/CVE-2008-2802.html
https://www.redhat.com/security/data/cve/CVE-2008-2803.html
https://www.redhat.com/security/data/cve/CVE-2008-2805.html
https://www.redhat.com/security/data/cve/CVE-2008-2807.html
https://www.redhat.com/security/data/cve/CVE-2008-2808.html
https://www.redhat.com/security/data/cve/CVE-2008-2809.html
https://www.redhat.com/security/data/cve/CVE-2008-2810.html
https://www.redhat.com/security/data/cve/CVE-2008-2811.html
http://www.redhat.com/security/updates/classification/#critical