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==========================================================================
Ubuntu Security Notice USN-1254-1
December 22, 2011

thunderbird vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS

Summary:

Multiple vulnerabilities have been fixed in Thunderbird.

Software Description:
- thunderbird: Mozilla Open Source mail and newsgroup client

Details:

It was discovered that CVE-2011-3004, which addressed possible privilege
escalation in addons, also affected Thunderbird 3.1. An attacker could
potentially exploit a user who had installed an add-on that used
loadSubscript in vulnerable ways. (CVE-2011-3647)

Yosuke Hasegawa discovered that the Mozilla browser engine mishandled
invalid sequences in the Shift-JIS encoding. It may be possible to trigger
this crash without the use of debugging APIs, which might allow malicious
websites to exploit this vulnerability. An attacker could possibly use this
flaw this to steal data or inject malicious scripts into web content.
(CVE-2011-3648)

Marc Schoenefeld discovered that using Firebug to profile a JavaScript file
with many functions would cause Firefox to crash. An attacker might be able
to exploit this without using the debugging APIs which would potentially
allow an attacker to remotely crash Thunderbird. (CVE-2011-3650)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.04:
  thunderbird                     3.1.16+build2+nobinonly-0ubuntu0.11.04.1

Ubuntu 10.10:
  thunderbird                     3.1.16+build2+nobinonly-0ubuntu0.10.10.1

Ubuntu 10.04 LTS:
  thunderbird                     3.1.16+build2+nobinonly-0ubuntu0.10.04.1

After a standard system update you need to restart Thunderbird to make all
the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1254-1
  CVE-2011-3647, CVE-2011-3648, CVE-2011-3650

Package Information:
  https://launchpad.net/ubuntu/+source/thunderbird/3.1.16+build2+nobinonly-0ubuntu0.11.04.1
  https://launchpad.net/ubuntu/+source/thunderbird/3.1.16+build2+nobinonly-0ubuntu0.10.10.1
  https://launchpad.net/ubuntu/+source/thunderbird/3.1.16+build2+nobinonly-0ubuntu0.10.04.1



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