Critical: thunderbird security update

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.

Mozilla Thunderbird is a standalone mail and newsgroup client.

Several flaws were found in the processing of malformed HTML content. An
HTML mail message containing malicious content could possibly lead to
arbitrary code execution with the privileges of the user running
Thunderbird. (CVE-2011-0080)

An arbitrary memory write flaw was found in the way Thunderbird handled
out-of-memory conditions. If all memory was consumed when a user viewed a
malicious HTML mail message, it could possibly lead to arbitrary code
execution with the privileges of the user running Thunderbird.
(CVE-2011-0078)

An integer overflow flaw was found in the way Thunderbird handled the HTML
frameset tag. An HTML mail message with a frameset tag containing large
values for the "rows" and "cols" attributes could trigger this flaw,
possibly leading to arbitrary code execution with the privileges of the
user running Thunderbird. (CVE-2011-0077)

A flaw was found in the way Thunderbird handled the HTML iframe tag. An
HTML mail message with an iframe tag containing a specially-crafted source
address could trigger this flaw, possibly leading to arbitrary code
execution with the privileges of the user running Thunderbird.
(CVE-2011-0075)

A flaw was found in the way Thunderbird displayed multiple marquee
elements. A malformed HTML mail message could cause Thunderbird to execute
arbitrary code with the privileges of the user running Thunderbird.
(CVE-2011-0074)

A flaw was found in the way Thunderbird handled the nsTreeSelection
element. Malformed content could cause Thunderbird to execute arbitrary
code with the privileges of the user running Thunderbird. (CVE-2011-0073)

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 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

700603 - CVE-2011-0078 Mozilla OOM condition arbitrary memory write (MFSA 2011-12)
700613 - CVE-2011-0077 Mozilla integer overflow in frameset spec (MFSA 2011-12)
700615 - CVE-2011-0075 Mozilla crash from bad iframe source (MFSA 2011-12)
700617 - CVE-2011-0074 Mozilla crash from several marquee elements (MFSA 2011-12)
700619 - CVE-2011-0073 Mozilla dangling pointer flaw (MFSA 2011-13)
700677 - CVE-2011-0080 Mozilla memory safety issue (MFSA 2011-12)

https://www.redhat.com/security/data/cve/CVE-2011-0073.html
https://www.redhat.com/security/data/cve/CVE-2011-0074.html
https://www.redhat.com/security/data/cve/CVE-2011-0075.html
https://www.redhat.com/security/data/cve/CVE-2011-0077.html
https://www.redhat.com/security/data/cve/CVE-2011-0078.html
https://www.redhat.com/security/data/cve/CVE-2011-0080.html
https://access.redhat.com/security/updates/classification/#critical