Ubuntu Security Notice USN-1254-1
22nd December, 2011
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
Multiple vulnerabilities have been fixed in Thunderbird.
- thunderbird - Mozilla Open Source mail and newsgroup client
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.
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)
The problem can be corrected by updating your system to the following package version:
- 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
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart Thunderbird to make all
the necessary changes.