Ubuntu 1251-1: Firefox and Xulrunner vulnerabilities

    Date10 Nov 2011
    Posted ByLinuxSecurity Advisories
    Multiple vulnerabilities have been fixed in Firefox and Xulrunner.
    Ubuntu Security Notice USN-1251-1
    November 10, 2011
    firefox, xulrunner-1.9.2 vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 10.10
    - Ubuntu 10.04 LTS
    Multiple vulnerabilities have been fixed in Firefox and Xulrunner.
    Software Description:
    - firefox: Mozilla Open Source web browser
    - xulrunner-1.9.2: Mozilla Gecko runtime environment
    It was discovered that CVE-2011-3004, which addressed possible privilege
    escalation in addons, also affected Firefox 3.6. An attacker could
    potentially exploit Firefox when an add-on was installed that used
    loadSubscript in vulnerable ways. (CVE-2011-3647)
    Yosuke Hasegawa discovered that the Mozilla browser engine mishandled
    invalid sequences in the Shift-JIS encoding. A malicious website could
    possibly use this flaw this to steal data or inject malicious scripts into
    web content. (CVE-2011-3648)
    Marc Schoenefeld discovered that using Firebug to profile a JavaScript file
    with many functions would cause Firefox to crash. An attacker might be able
    to exploit this without using the debugging APIs which would potentially
    allow an attacker to remotely crash the browser. (CVE-2011-3650)
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 10.10:
      firefox                         3.6.24+build2+nobinonly-0ubuntu0.10.10.1
    Ubuntu 10.04 LTS:
      firefox                         3.6.24+build2+nobinonly-0ubuntu0.10.04.1
    After a standard system upgrade you need to restart Firefox and any
    applications that use Xulrunner to effect the necessary changes.
      CVE-2011-3647, CVE-2011-3648, CVE-2011-3650
    Package Information:
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