Ubuntu 3270-1: NSS vulnerabilities

    Date27 Apr 2017
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in NSS.
    Ubuntu Security Notice USN-3270-1
    April 27, 2017
    nss vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 17.04
    - Ubuntu 16.10
    - Ubuntu 16.04 LTS
    - Ubuntu 14.04 LTS
    Several security issues were fixed in NSS.
    Software Description:
    - nss: Network Security Service library
    Karthik Bhargavan and Gaetan Leurent discovered that the DES and Triple DES
    ciphers were vulnerable to birthday attacks. A remote attacker could
    possibly use this flaw to obtain clear text data from long encrypted
    sessions. This update causes NSS to limit use of the same symmetric key.
    It was discovered that NSS incorrectly handled Base64 decoding. A remote
    attacker could use this flaw to cause NSS to crash, resulting in a denial
    of service, or possibly execute arbitrary code. (CVE-2017-5461)
    This update refreshes the NSS package to version 3.28.4 which includes
    the latest CA certificate bundle.
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 17.04:
      libnss3                         2:3.28.4-0ubuntu0.17.04.1
    Ubuntu 16.10:
      libnss3                         2:3.28.4-0ubuntu0.16.10.1
    Ubuntu 16.04 LTS:
      libnss3                         2:3.28.4-0ubuntu0.16.04.1
    Ubuntu 14.04 LTS:
      libnss3                         2:3.28.4-0ubuntu0.14.04.1
    This update uses a new upstream release, which includes additional bug
    fixes. After a standard system update you need to restart any applications
    that use NSS, such as Evolution and Chromium, to make all the necessary
      CVE-2016-2183, CVE-2017-5461
    Package Information:
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