==========================================================================
Ubuntu Security Notice USN-2052-1
December 11, 2013

firefox vulnerabilities
==========================================================================

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

- Ubuntu 13.10
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

Firefox could be made to crash or run programs as your login if it
opened a malicious website.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

Ben Turner, Bobby Holley, Jesse Ruderman, Christian Holler and Christoph
Diehl discovered multiple memory safety issues in Firefox. If a user were
tricked in to opening a specially crafted website, 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
Firefox. (CVE-2013-5609, CVE-2013-5610)

Myk Melez discovered that the doorhanger notification for web app
installation could persist between page navigations. An attacker could
potentially exploit this to conduct clickjacking attacks. (CVE-2013-5611)

Masato Kinugawa discovered that pages with missing character set encoding
information can inherit character encodings across navigations from
another domain. An attacker could potentially exploit this to conduct
cross-site scripting attacks. (CVE-2013-5612)

Daniel Veditz discovered that a sandboxed iframe could use an object
element to bypass its own restrictions. (CVE-2013-5614)

Tyson Smith and Jesse Schwartzentruber discovered a use-after-free in
event listeners. 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 Firefox. (CVE-2013-5616)

A use-after-free was discovered in the table editing interface. 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 Firefox. (CVE-2013-5618)

Dan Gohman discovered that binary search algorithms in Spidermonkey
used arithmetic prone to overflow in several places. However, this
is issue not believed to be exploitable. (CVE-2013-5619)

Tyson Smith and Jesse Schwartzentruber discovered a crash when inserting
an ordered list in to a document using script. An attacker could
potentially exploit this to execute arbitrary code with the privileges
of the user invoking Firefox. (CVE-2013-6671)

Vincent Lefevre discovered that web content could access clipboard data
under certain circumstances, resulting in information disclosure.
(CVE-2013-6672)

Sijie Xia discovered that trust settings for built-in EV root certificates
were ignored under certain circumstances, removing the ability for a user
to manually untrust certificates from specific authorities.
(CVE-2013-6673)

Tyson Smith, Jesse Schwartzentruber and Atte Kettunen discovered a
use-after-free in functions for synthetic mouse movement handling. 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 Firefox. (CVE-2013-5613)

Eric Faust discovered that GetElementIC typed array stubs can be generated
outside observed typesets. An attacker could possibly exploit this to
cause undefined behaviour with a potential security impact.
(CVE-2013-5615)

Michal Zalewski discovered several issues with JPEG image handling. An
attacker could potentially exploit these to obtain sensitive information.
(CVE-2013-6629, CVE-2013-6630)

Update instructions:

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

Ubuntu 13.10:
   firefox                         26.0+build2-0ubuntu0.13.10.2

Ubuntu 13.04:
   firefox                         26.0+build2-0ubuntu0.13.04.2

Ubuntu 12.10:
   firefox                         26.0+build2-0ubuntu0.12.10.2

Ubuntu 12.04 LTS:
   firefox                         26.0+build2-0ubuntu0.12.04.2

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

References:
   http://www.ubuntu.com/usn/usn-2052-1
   CVE-2013-5609, CVE-2013-5610, CVE-2013-5611, CVE-2013-5612,
   CVE-2013-5613, CVE-2013-5614, CVE-2013-5615, CVE-2013-5616,
   CVE-2013-5618, CVE-2013-5619, CVE-2013-6629, CVE-2013-6630,
   CVE-2013-6671, CVE-2013-6672, CVE-2013-6673,https://launchpad.net/bugs/1258513

Package Information:
   https://launchpad.net/ubuntu/+source/firefox/26.0+build2-0ubuntu0.13.10.2
   https://launchpad.net/ubuntu/+source/firefox/26.0+build2-0ubuntu0.13.04.2
   https://launchpad.net/ubuntu/+source/firefox/26.0+build2-0ubuntu0.12.10.2
   https://launchpad.net/ubuntu/+source/firefox/26.0+build2-0ubuntu0.12.04.2


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