Topic

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

The Red Hat Security Response Team has rated this update as having moderate
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.

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 with the privileges of the
user running Thunderbird. (CVE-2009-2462, CVE-2009-2463, CVE-2009-2466,
CVE-2009-3072, CVE-2009-3075, CVE-2009-3380, CVE-2009-3979, CVE-2010-0159)

A use-after-free flaw was found in Thunderbird. An attacker could use this
flaw to crash Thunderbird or, potentially, execute arbitrary code with the
privileges of the user running Thunderbird. (CVE-2009-3077)

A heap-based buffer overflow flaw was found in the Thunderbird string to
floating point conversion routines. An HTML mail message containing
malicious JavaScript could crash Thunderbird or, potentially, execute
arbitrary code with the privileges of the user running Thunderbird.
(CVE-2009-0689)

A use-after-free flaw was found in Thunderbird. Under low memory
conditions, viewing an HTML mail message containing malicious content could
result in Thunderbird executing arbitrary code with the privileges of the
user running Thunderbird. (CVE-2009-1571)

A flaw was found in the way Thunderbird created temporary file names for
downloaded files. If a local attacker knows the name of a file Thunderbird
is going to download, they can replace the contents of that file with
arbitrary contents. (CVE-2009-3274)

A flaw was found in the way Thunderbird displayed a right-to-left override
character when downloading a file. In these cases, the name displayed in
the title bar differed from the name displayed in the dialog body. An
attacker could use this flaw to trick a user into downloading a file that
has a file name or extension that is different from what the user expected.
(CVE-2009-3376)

A flaw was found in the way Thunderbird processed SOCKS5 proxy replies. A
malicious SOCKS5 server could send a specially-crafted reply that would
cause Thunderbird to crash. (CVE-2009-2470)

Descriptions in the dialogs when adding and removing PKCS #11 modules were
not informative. An attacker able to trick a user into installing a
malicious PKCS #11 module could use this flaw to install their own
Certificate Authority certificates on a user's machine, making it possible
to trick the user into believing they are viewing trusted content or,
potentially, execute arbitrary code with the privileges of the user running
Thunderbird. (CVE-2009-3076)

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
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 5.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 5.4 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 512128 - CVE-2009-2462 Mozilla Browser engine crashes
• BZ - 512131 - CVE-2009-2463 Mozilla Base64 decoding crash
• BZ - 512136 - CVE-2009-2466 Mozilla JavaScript engine crashes
• BZ - 512145 - CVE-2009-2470 Mozilla data corruption with SOCKS5 reply
• BZ - 521688 - CVE-2009-3072 Firefox 3.5.3 3.0.14 browser engine crashes
• BZ - 521691 - CVE-2009-3075 Firefox 3.5.2 3.0.14 JavaScript engine crashes
• BZ - 521692 - CVE-2009-3076 Firefox 3.0.14 Insufficient warning for PKCS11 module installation and removal
• BZ - 521693 - CVE-2009-3077 Firefox 3.5.3 3.0.14 TreeColumns dangling pointer vulnerability
• BZ - 524815 - CVE-2009-3274 Firefox: Predictable /tmp pathname use
• BZ - 530162 - CVE-2009-0689 (rejected CVE-2009-1563) Firefox heap buffer overflow in string to number conversion
• BZ - 530168 - CVE-2009-3376 Firefox download filename spoofing with RTL override
• BZ - 530567 - CVE-2009-3380 Firefox crashes with evidence of memory corruption
• BZ - 546694 - CVE-2009-3979 Mozilla crash with evidence of memory corruption
• BZ - 566047 - CVE-2010-0159 Mozilla crashes with evidence of memory corruption (MFSA 2010-01)
• BZ - 566050 - CVE-2009-1571 Mozilla incorrectly frees used memory (MFSA 2010-03)

CVEs

• CVE-2009-2462
• CVE-2009-2463
• CVE-2009-2466
• CVE-2009-2470
• CVE-2009-3076
• CVE-2009-3077
• CVE-2009-3075
• CVE-2009-3072
• CVE-2009-3380
• CVE-2009-3274
• CVE-2009-3376
• CVE-2009-0689
• CVE-2009-3979
• CVE-2009-1571
• CVE-2010-0159
• CVE-2010-0169
• CVE-2010-0171
• CVE-2010-0163
• CVE-2009-3384

References

• http://www.redhat.com/security/updates/classification/#moderate