Ubuntu 2973-1: Thunderbird vulnerabilities

    Date18 May 2016
    CategoryUbuntu
    34
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in Thunderbird.
    ==========================================================================
    Ubuntu Security Notice USN-2973-1
    May 19, 2016
    
    thunderbird vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    - Ubuntu 15.10
    - Ubuntu 14.04 LTS
    - Ubuntu 12.04 LTS
    
    Summary:
    
    Several security issues were fixed in Thunderbird.
    
    Software Description:
    - thunderbird: Mozilla Open Source mail and newsgroup client
    
    Details:
    
    Christian Holler, Tyson Smith, and Phil Ringalda discovered multiple
    memory safety issues in Thunderbird. If a user were tricked in to opening
    a specially crafted message, an attacker could potentially exploit these
    to cause a denial of service via application crash, or execute arbitrary
    code. (CVE-2016-2805, CVE-2016-2807)
    
    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)
    
    A use-after-free was discovered in ssl3_HandleECDHServerKeyExchange in
    NSS. A remote attacker could potentially exploit this to cause a denial of
    service via application crash, or execute arbitrary code. (CVE-2016-1978)
    
    A use-after-free was discovered in PK11_ImportDERPrivateKeyInfoAndReturnKey
    in NSS. A remote attacker could potentially exploit this to cause a denial
    of service via application crash, or execute arbitrary code.
    (CVE-2016-1979)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      thunderbird                     1:38.8.0+build1-0ubuntu0.16.04.1
    
    Ubuntu 15.10:
      thunderbird                     1:38.8.0+build1-0ubuntu0.15.10.1
    
    Ubuntu 14.04 LTS:
      thunderbird                     1:38.8.0+build1-0ubuntu0.14.04.1
    
    Ubuntu 12.04 LTS:
      thunderbird                     1:38.8.0+build1-0ubuntu0.12.04.1
    
    After a standard system update you need to restart Thunderbird to make
    all the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-2973-1
      CVE-2016-1938, CVE-2016-1978, CVE-2016-1979, CVE-2016-2805,
      CVE-2016-2807
    
    Package Information:
      https://launchpad.net/ubuntu/+source/thunderbird/1:38.8.0+build1-0ubuntu0.16.04.1
      https://launchpad.net/ubuntu/+source/thunderbird/1:38.8.0+build1-0ubuntu0.15.10.1
      https://launchpad.net/ubuntu/+source/thunderbird/1:38.8.0+build1-0ubuntu0.14.04.1
      https://launchpad.net/ubuntu/+source/thunderbird/1:38.8.0+build1-0ubuntu0.12.04.1
    
    
    
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