Ubuntu 2702-1: Firefox vulnerabilities

    Date11 Aug 2015
    CategoryUbuntu
    44
    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-2702-1
    August 11, 2015
    
    firefox vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 15.04
    - 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:
    
    Gary Kwong, Christian Holler, Byron Campen, Tyson Smith, Bobby Holley,
    Chris Coulson, and Eric Rahm 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-2015-4473, CVE-2015-4474)
    
    Aki Helin discovered an out-of-bounds read when playing malformed MP3
    content in some circumstances. If a user were tricked in to opening a
    specially crafted website, an attacker could potentially exploit this to
    obtain sensitive information, cause a denial of service via application
    crash, or execute arbitrary code with the privileges of the user invoking
    Firefox. (CVE-2015-4475)
    
    A use-after-free was discovered during MediaStream playback in some
    circumstances. 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
    priviliges of the user invoking Firefox. (CVE-2015-4477)
    
    André Bargull discovered that non-configurable properties on javascript
    objects could be redefined when parsing JSON. If a user were tricked in to
    opening a specially crafted website, an attacker could potentially exploit
    this to bypass same-origin restrictions. (CVE-2015-4478)
    
    Multiple integer overflows were discovered in libstagefright. 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-2015-4479, CVE-2015-4480, CVE-2015-4493)
    
    Jukka Jylänki discovered a crash that occurs because javascript does not
    properly gate access to Atomics or SharedArrayBuffers in some
    circumstances. 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-2015-4484)
    
    Abhishek Arya discovered 2 buffer overflows in libvpx when decoding
    malformed WebM content in some circumstances. 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-2015-4485, CVE-2015-4486)
    
    Ronald Crane reported 3 security issues. If a user were tricked in to
    opening a specially crafted website, an attacker could potentially
    exploit these, in combination with another security vulnerability, to
    cause a denial of service via application crash, or execute arbitrary
    code with the privileges of the user invoking Firefox. (CVE-2015-4487,
    CVE-2015-4488, CVE-2015-4489)
    
    Christoph Kerschbaumer discovered an issue with Mozilla's implementation
    of Content Security Policy (CSP), which could allow for a more permissive
    usage in some cirucumstances. An attacker could potentially exploit this
    to conduct cross-site scripting (XSS) attacks. (CVE-2015-4490)
    
    Gustavo Grieco discovered a heap overflow in gdk-pixbuf. 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 priviliges of the user invoking
    Firefox. (CVE-2015-4491)
    
    Looben Yang discovered a use-after-free when using XMLHttpRequest with
    shared workers in some circumstances. 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 priviliges of the user invoking Firefox. (CVE-2015-4492)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 15.04:
      firefox                         40.0+build4-0ubuntu0.15.04.1
    
    Ubuntu 14.04 LTS:
      firefox                         40.0+build4-0ubuntu0.14.04.1
    
    Ubuntu 12.04 LTS:
      firefox                         40.0+build4-0ubuntu0.12.04.1
    
    After a standard system update you need to restart Firefox to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2702-1
      CVE-2015-4473, CVE-2015-4474, CVE-2015-4475, CVE-2015-4477,
      CVE-2015-4478, CVE-2015-4479, CVE-2015-4480, CVE-2015-4484,
      CVE-2015-4485, CVE-2015-4486, CVE-2015-4487, CVE-2015-4488,
      CVE-2015-4489, CVE-2015-4490, CVE-2015-4491, CVE-2015-4492,
      CVE-2015-4493
    
    Package Information:
      https://launchpad.net/ubuntu/+source/firefox/40.0+build4-0ubuntu0.15.04.1
      https://launchpad.net/ubuntu/+source/firefox/40.0+build4-0ubuntu0.14.04.1
      https://launchpad.net/ubuntu/+source/firefox/40.0+build4-0ubuntu0.12.04.1
    
    
    
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