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USN-1213-1: Thunderbird vulnerabilities

28 September 2011

Multiple vulnerabilities were fixed in Thunderbird.

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Releases

Packages

  • thunderbird - Mozilla Open Source mail and newsgroup client

Details

Benjamin Smedberg, Bob Clary, Jesse Ruderman, and Josh Aas discovered
multiple memory vulnerabilities in the Gecko rendering engine. An
attacker could use these to possibly execute arbitrary code with the
privileges of the user invoking Thunderbird. (CVE-2011-2995, CVE-2011-2996)

Boris Zbarsky discovered that a frame named "location" could shadow the
window.location object unless a script in a page grabbed a reference to the
true object before the frame was created. This is in violation of the Same
Origin Policy. A malicious E-Mail could possibly use this to access the
local file system. (CVE-2011-2999)

Mark Kaplan discovered an integer underflow in the SpiderMonkey JavaScript
engine. An attacker could potentially use this to crash Thunderbird.

Ian Graham discovered that when multiple Location headers were present,
Thunderbird would use the second one resulting in a possible CRLF injection
attack. CRLF injection issues can result in a wide variety of attacks, such
as XSS (Cross-Site Scripting) vulnerabilities, browser cache poisoning, and
cookie theft. (CVE-2011-3000)

Mariusz Mlynski discovered that if the user could be convinced to hold down
the enter key, a malicious website or E-Mail could potential pop up a
download dialog and the default open action would be selected. This would
result in potentially malicious content being run with privileges of the
user invoking Thunderbird. (CVE-2011-2372)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 11.04
Ubuntu 10.10
Ubuntu 10.04

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

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