Ubuntu 2973-1: Thunderbird vulnerabilities

    Date18 May 2016
    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
    Several security issues were fixed in Thunderbird.
    Software Description:
    - thunderbird: Mozilla Open Source mail and newsgroup client
    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.
    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.
      CVE-2016-1938, CVE-2016-1978, CVE-2016-1979, CVE-2016-2805,
    Package Information:
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