Ubuntu 2458-1: Firefox vulnerabilities

    Date14 Jan 2015
    CategoryUbuntu
    91
    Posted ByLinuxSecurity Advisories
    Firefox could be made to crash or run programs as your login if it opened a malicious website.
    ==========================================================================
    Ubuntu Security Notice USN-2458-1
    January 14, 2015
    
    firefox vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.10
    - Ubuntu 14.04 LTS
    - 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:
    
    Christian Holler, Patrick McManus, Christoph Diehl, Gary Kwong, Jesse
    Ruderman, Byron Campen, Terrence Cole, and Nils Ohlmeier 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-2014-8634, CVE-2014-8635)
    
    Bobby Holley discovered that some DOM objects with certain properties
    can bypass XrayWrappers in some circumstances. If a user were tricked in
    to opening a specially crafted website, an attacker could potentially
    exploit this to bypass security restrictions. (CVE-2014-8636)
    
    Michal Zalewski discovered a use of uninitialized memory when rendering
    malformed bitmap images on a canvas element. If a user were tricked in to
    opening a specially crafted website, an attacker could potentially
    exploit this to steal confidential information. (CVE-2014-8637)
    
    Muneaki Nishimura discovered that requests from navigator.sendBeacon()
    lack an origin header. If a user were tricked in to opening a specially
    crafted website, an attacker could potentially exploit this to conduct
    cross-site request forgery (XSRF) attacks. (CVE-2014-8638)
    
    Xiaofeng Zheng discovered that a web proxy returning a 407 response
    could inject cookies in to the originally requested domain. If a user
    connected to a malicious web proxy, an attacker could potentially exploit
    this to conduct session-fixation attacks. (CVE-2014-8639)
    
    Holger Fuhrmannek discovered a crash in Web Audio while manipulating
    timelines. If a user were tricked in to opening a specially crafted
    website, an attacker could potentially exploit this to cause a denial
    of service. (CVE-2014-8640)
    
    Mitchell Harper discovered a use-after-free in WebRTC. If a user were
    tricked in to opening a specially crafted website, 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-2014-8641)
    
    Brian Smith discovered that OCSP responses would fail to verify if signed
    by a delegated OCSP responder certificate with the id-pkix-ocsp-nocheck
    extension, potentially allowing a user to connect to a site with a revoked
    certificate. (CVE-2014-8642)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.10:
      firefox                         35.0+build3-0ubuntu0.14.10.2
    
    Ubuntu 14.04 LTS:
      firefox                         35.0+build3-0ubuntu0.14.04.2
    
    Ubuntu 12.04 LTS:
      firefox                         35.0+build3-0ubuntu0.12.04.2
    
    After a standard system update you need to restart Firefox to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2458-1
      CVE-2014-8634, CVE-2014-8635, CVE-2014-8636, CVE-2014-8637,
      CVE-2014-8638, CVE-2014-8639, CVE-2014-8640, CVE-2014-8641,
      CVE-2014-8642
    
    Package Information:
      https://launchpad.net/ubuntu/+source/firefox/35.0+build3-0ubuntu0.14.10.2
      https://launchpad.net/ubuntu/+source/firefox/35.0+build3-0ubuntu0.14.04.2
      https://launchpad.net/ubuntu/+source/firefox/35.0+build3-0ubuntu0.12.04.2
    
    
    
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