Ubuntu 2458-3: Firefox regression

    Date 27 Jan 2015
    81
    Posted By LinuxSecurity Advisories
    USN-2458-1 introduced a regression in Firefox
    ==========================================================================
    Ubuntu Security Notice USN-2458-3
    January 27, 2015
    
    firefox regression
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    
    Summary:
    
    USN-2458-1 introduced a regression in Firefox
    
    Software Description:
    - firefox: Mozilla Open Source web browser
    
    Details:
    
    USN-2458-1 fixed vulnerabilities in Firefox. This update introduced a
    regression which could make websites that use CSP fail to load under some
    circumstances. This update fixes the problem.
    
    We apologize for the inconvenience.
    
    Original advisory 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                         35.0.1+build1-0ubuntu0.14.10.1
    
    Ubuntu 14.04 LTS:
      firefox                         35.0.1+build1-0ubuntu0.14.04.1
    
    Ubuntu 12.04 LTS:
      firefox                         35.0.1+build1-0ubuntu0.12.04.1
    
    After a standard system update you need to restart Firefox to make
    all the necessary changes.
    
    Package Information:
      https://launchpad.net/ubuntu/+source/firefox/35.0.1+build1-0ubuntu0.14.10.1
      https://launchpad.net/ubuntu/+source/firefox/35.0.1+build1-0ubuntu0.14.04.1
      https://launchpad.net/ubuntu/+source/firefox/35.0.1+build1-0ubuntu0.12.04.1
    
    
    

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