7.5 - USN-2603-1

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

- Ubuntu 15.04 - Ubuntu 14.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in Thunderbird.

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

Details:

Jesse Ruderman, Mats Palmgren, Byron Campen, and Steve Fink discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening a specially crafted message with scripting enabled, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-2708)

Atte Kettunen discovered a buffer overflow during the rendering of SVG content with certain CSS properties in some circumstances. If a user were tricked in to opening a specially crafted message with scripting enabled, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-2710)

Scott Bell discovered a use-afer-free during the processing of text when vertical text is enabled. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-2713)

Ucha Gobejishvili discovered a buffer overflow when parsing compressed XML content. If a user were tricked in to opening a specially crafted message with scripting enabled, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. (CVE-2015-2716)

Update instructions:

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

Ubuntu 15.04:
thunderbird 1:31.7.0+build1-0ubuntu0.15.04.1

Ubuntu 14.10:
thunderbird 1:31.7.0+build1-0ubuntu0.14.10.1

Ubuntu 14.04 LTS:
thunderbird 1:31.7.0+build1-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
thunderbird 1:31.7.0+build1-0ubuntu0.12.04.1

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

References:
http://www.ubuntu.com/usn/usn-2603-1
CVE-2015-2708, CVE-2015-2710, CVE-2015-2713, CVE-2015-2716

Package Information:
https://launchpad.net/ubuntu/+source/thunderbird/1:31.7.0+build1-0ubuntu0.15.04.1
https://launchpad.net/ubuntu/+source/thunderbird/1:31.7.0+build1-0ubuntu0.14.10.1
https://launchpad.net/ubuntu/+source/thunderbird/1:31.7.0+build1-0ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/thunderbird/1:31.7.0+build1-0ubuntu0.12.04.1