Ubuntu 2880-1: Firefox vulnerabilities

    Date27 Jan 2016
    CategoryUbuntu
    32
    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-2880-1
    January 27, 2016
    
    firefox vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 15.10
    - 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:
    
    Bob Clary, Christian Holler, Nils Ohlmeier, Gary Kwong, Jesse Ruderman,
    Carsten Book, Randell Jesup, Nicolas Pierron, Eric Rescorla, Tyson Smith,
    and Gabor Krizsanits 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-2016-1930, CVE-2016-1931)
    
    Gustavo Grieco discovered an out-of-memory crash when loading GIF images
    in some circumstances. If a user were tricked in to opening a specially
    crafted website, an attacker could exploit this to cause a denial of
    service. (CVE-2016-1933)
    
    Aki Helin discovered a buffer overflow when rendering WebGL content 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 privileges of the user invoking Firefox. (CVE-2016-1935)
    
    It was discovered that a delay was missing when focusing the protocol
    handler dialog. If a user were tricked in to opening a specially crafted
    website, an attacker could potentially exploit this to conduct
    clickjacking attacks. (CVE-2016-1937)
    
    Hanno Böck discovered that calculations with mp_div and mp_exptmod in NSS
    produce incorrect results in some circumstances, resulting in
    cryptographic weaknesses. (CVE-2016-1938)
    
    Nicholas Hurley discovered that Firefox allows for control characters to
    be set in cookie names. An attacker could potentially exploit this to
    conduct cookie injection attacks on some web servers. (CVE-2016-1939)
    
    It was discovered that when certain invalid URLs are pasted in to the
    addressbar, the addressbar contents may be manipulated to show the
    location of arbitrary websites. An attacker could potentially exploit this
    to conduct URL spoofing attacks. (CVE-2016-1942)
    
    Ronald Crane discovered three vulnerabilities through code inspection. 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-2016-1944, CVE-2016-1945, CVE-2016-1946)
    
    François Marier discovered that Application Reputation lookups didn't
    work correctly, disabling warnings for potentially malicious downloads. An
    attacker could potentially exploit this by tricking a user in to
    downloading a malicious file. Other parts of the Safe Browsing feature
    were unaffected by this. (CVE-2016-1947)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 15.10:
      firefox                         44.0+build3-0ubuntu0.15.10.1
    
    Ubuntu 15.04:
      firefox                         44.0+build3-0ubuntu0.15.04.1
    
    Ubuntu 14.04 LTS:
      firefox                         44.0+build3-0ubuntu0.14.04.1
    
    Ubuntu 12.04 LTS:
      firefox                         44.0+build3-0ubuntu0.12.04.1
    
    After a standard system update you need to restart Firefox to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2880-1
      CVE-2016-1930, CVE-2016-1931, CVE-2016-1933, CVE-2016-1935,
      CVE-2016-1937, CVE-2016-1938, CVE-2016-1939, CVE-2016-1942,
      CVE-2016-1944, CVE-2016-1945, CVE-2016-1946, CVE-2016-1947
    
    Package Information:
      https://launchpad.net/ubuntu/+source/firefox/44.0+build3-0ubuntu0.15.10.1
      https://launchpad.net/ubuntu/+source/firefox/44.0+build3-0ubuntu0.15.04.1
      https://launchpad.net/ubuntu/+source/firefox/44.0+build3-0ubuntu0.14.04.1
      https://launchpad.net/ubuntu/+source/firefox/44.0+build3-0ubuntu0.12.04.1
    
    
    
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