============================================================================
Ubuntu Security Notice USN-1551-1
August 30, 2012

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

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS

Summary:

Multiple security issues were fixed in Thunderbird.

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

Details:

Gary Kwong, Christian Holler, Jesse Ruderman, Steve Fink, Bob Clary, Andrew
Sutherland, Jason Smith, John Schoenick, Vladimir Vukicevic and Daniel
Holbert discovered memory safety issues affecting Thunderbird. If the user
were tricked into opening a specially crafted E-Mail, an attacker could
exploit these to cause a denial of service via application crash, or
potentially execute code with the privileges of the user invoking
Thunderbird. (CVE-2012-1970, CVE-2012-1971)

Abhishek Arya discovered multiple use-after-free vulnerabilities. If the
user were tricked into opening a specially crafted E-Mail, an attacker
could exploit these to cause a denial of service via application crash, or
potentially execute code with the privileges of the user invoking
Thunderbird. (CVE-2012-1972, CVE-2012-1973, CVE-2012-1974, CVE-2012-1975,
CVE-2012-1976, CVE-2012-3956, CVE-2012-3957, CVE-2012-3958, CVE-2012-3959,
CVE-2012-3960, CVE-2012-3961, CVE-2012-3962, CVE-2012-3963, CVE-2012-3964)

Mariusz Mlynsk discovered that it is possible to shadow the location object
using Object.defineProperty. This could potentially result in a cross-site
scripting (XSS) attack against plugins. With cross-site scripting
vulnerabilities, if a user were tricked into viewing a specially crafted
E-Mail, a remote attacker could exploit this to modify the contents or
steal confidential data within the same domain. (CVE-2012-1956)

Fr=C3=A9d=C3=A9ric Hoguin discovered that bitmap format images with a negative height
could potentially result in memory corruption. If the user were tricked
into opening a specially crafted image, an attacker could exploit this to
cause a denial of service via application crash, or potentially execute
code with the privileges of the user invoking Thunderbird. (CVE-2012-3966)

It was discovered that Thunderbird's WebGL implementation was vulnerable to
multiple memory safety issues. If the user were tricked into opening a
specially crafted E-Mail, an attacker could exploit these to cause a denial
of service via application crash, or potentially execute code with the
privileges of the user invoking Thunderbird. (CVE-2012-3967, CVE-2012-3968)

Arthur Gerkis discovered multiple memory safety issues in Thunderbird's
Scalable Vector Graphics (SVG) implementation. If the user were tricked
into opening a specially crafted image, an attacker could exploit these to
cause a denial of service via application crash, or potentially execute
code with the privileges of the user invoking Thunderbird. (CVE-2012-3969,
CVE-2012-3970)

Christoph Diehl discovered multiple memory safety issues in the bundled
Graphite 2 library. If the user were tricked into opening a specially
crafted E-Mail, an attacker could exploit these to cause a denial of
service via application crash, or potentially execute code with the
privileges of the user invoking Thunderbird. (CVE-2012-3971)

Nicolas Gr=C3=A9goire discovered an out-of-bounds read in the format-number
feature of XSLT. This could potentially cause inaccurate formatting of
numbers and information leakage. (CVE-2012-3972)

It was discovered that when the DOMParser is used to parse text/html data
in a Thunderbird extension, linked resources within this HTML data will be
loaded. If the data being parsed in the extension is untrusted, it could
lead to information leakage and potentially be combined with other attacks
to become exploitable. (CVE-2012-3975)

It was discovered that, in some instances, certain security checks in the
location object could be bypassed. This could allow for the loading of
restricted content and can potentially be combined with other issues to
become exploitable. (CVE-2012-3978)

Colby Russell discovered that eval in the web console can execute injected
code with chrome privileges, leading to the running of malicious code in a
privileged context. If the user were tricked into opening a specially
crafted E-Mail, an attacker could exploit this to cause a denial of service
via application crash, or potentially execute code with the privileges of
the user invoking Thunderbird. (CVE-2012-3980)

Update instructions:

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

Ubuntu 12.04 LTS:
  thunderbird                     15.0+build1-0ubuntu0.12.04.1

Ubuntu 11.10:
  thunderbird                     15.0+build1-0ubuntu0.11.10.1

Ubuntu 11.04:
  thunderbird                     15.0+build1-0ubuntu0.11.04.1

Ubuntu 10.04 LTS:
  thunderbird                     15.0+build1-0ubuntu0.10.04.1

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

References:
  http://www.ubuntu.com/usn/usn-1551-1
  CVE-2012-1956, CVE-2012-1970, CVE-2012-1971, CVE-2012-1972,
  CVE-2012-1973, CVE-2012-1974, CVE-2012-1975, CVE-2012-1976,
  CVE-2012-3956, CVE-2012-3957, CVE-2012-3958, CVE-2012-3959,
  CVE-2012-3960, CVE-2012-3961, CVE-2012-3962, CVE-2012-3963,
  CVE-2012-3964, CVE-2012-3966, CVE-2012-3967, CVE-2012-3968,
  CVE-2012-3969, CVE-2012-3970, CVE-2012-3971, CVE-2012-3972,
  CVE-2012-3975, CVE-2012-3978, CVE-2012-3980, https://launchpad.net/bugs/1042165

Package Information:
  https://launchpad.net/ubuntu/+source/thunderbird/15.0+build1-0ubuntu0.12.04.1
  https://launchpad.net/ubuntu/+source/thunderbird/15.0+build1-0ubuntu0.11.10.1
  https://launchpad.net/ubuntu/+source/thunderbird/15.0+build1-0ubuntu0.11.04.1
  https://launchpad.net/ubuntu/+source/thunderbird/15.0+build1-0ubuntu0.10.04.1