============================================================================
Ubuntu Security Notice USN-1924-2
August 06, 2013

ubufox, unity-firefox-extension update
============================================================================

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

- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

This update provides compatible packages for Firefox 23.

Software Description:
- ubufox: Ubuntu Firefox specific configuration defaults and apt support
- unity-firefox-extension: Unity Integration for Firefox

Details:

USN-1924-1 fixed vulnerabilities in Firefox. This update provides the
corresponding updates for Ubufox and Unity Firefox Extension.

Original advisory details:

 Jeff Gilbert, Henrik Skupin, Ben Turner, Christian Holler,
 Andrew McCreight, Gary Kwong, Jan Varga and Jesse Ruderman discovered
 multiple memory safety issues in Firefox. If the user were tricked in to
 opening a specially crafted page, an attacker could possibly exploit these
 to cause a denial of service via application crash, or potentially execute
 arbitrary code with the privileges of the user invoking Firefox.
 (CVE-2013-1701, CVE-2013-1702)
 
 A use-after-free bug was discovered when the DOM is modified during a
 SetBody mutation event. If the user were tricked in to opening a specially
 crafted page, an attacker could potentially exploit this to execute
 arbitrary code with the privileges of the user invoking Firefox.
 (CVE-2013-1704)
 
 A use-after-free bug was discovered when generating a CRMF request with
 certain parameters. If the user were tricked in to opening a specially
 crafted page, an attacker could potentially exploit this to execute
 arbitrary code with the privileges of the user invoking Firefox.
 (CVE-2013-1705)
 
 Aki Helin discovered a crash when decoding a WAV file in some
 circumstances. An attacker could potentially exploit this to cause a
 denial of service. (CVE-2013-1708)
 
 It was discovered that a document's URI could be set to the URI of
 a different document. An attacker could potentially exploit this to
 conduct cross-site scripting (XSS) attacks. (CVE-2013-1709)
 
 A flaw was discovered when generating a CRMF request in certain
 circumstances. An attacker could potentially exploit this to conduct
 cross-site scripting (XSS) attacks, or execute arbitrary code with the
 privileges of the user invoking Firefox. (CVE-2013-1710)
 
 Bobby Holley discovered that XBL scopes could be used to circumvent
 XrayWrappers in certain circumstances. An attacked could potentially
 exploit this to conduct cross-site scripting (XSS) attacks or cause
 undefined behaviour. (CVE-2013-1711)
 
 Cody Crews discovered that some Javascript components performed security
 checks against the wrong URI, potentially bypassing same-origin policy
 restrictions. An attacker could exploit this to conduct cross-site
 scripting (XSS) attacks or install addons from a malicious site.
 (CVE-2013-1713)
 
 Federico Lanusse discovered that web workers could bypass cross-origin
 checks when using XMLHttpRequest. An attacker could potentially exploit
 this to conduct cross-site scripting (XSS) attacks. (CVE-2013-1714)
 
 Georgi Guninski and John Schoenick discovered that Java applets could
 access local files under certain circumstances. An attacker could
 potentially exploit this to steal confidential data. (CVE-2013-1717)

Update instructions:

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

Ubuntu 13.04:
  xul-ext-ubufox                  2.7-0ubuntu0.13.04.1

Ubuntu 12.10:
  xul-ext-ubufox                  2.7-0ubuntu0.12.10.1
  xul-ext-unity                   2.4.7-0ubuntu0.2

Ubuntu 12.04 LTS:
  xul-ext-ubufox                  2.7-0ubuntu0.12.04.1

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

References:
  http://www.ubuntu.com/usn/usn-1924-2
  http://www.ubuntu.com/usn/usn-1924-1
  https://launchpad.net/bugs/1208039

Package Information:
  https://launchpad.net/ubuntu/+source/ubufox/2.7-0ubuntu0.13.04.1
  https://launchpad.net/ubuntu/+source/ubufox/2.7-0ubuntu0.12.10.1
  https://launchpad.net/ubuntu/+source/unity-firefox-extension/2.4.7-0ubuntu0.2
  https://launchpad.net/ubuntu/+source/ubufox/2.7-0ubuntu0.12.04.1