Security update for MozillaFirefox (important)

Mozilla Firefox was updated to 38.7.0 ESR, fixing the following security
issues:

   * MFSA 2016-16/CVE-2016-1952/CVE-2016-1953: Miscellaneous memory
     safety hazards (rv:45.0 / rv:38.7)
   * MFSA 2016-17/CVE-2016-1954: Local file overwriting and potential
     privilege escalation through CSP reports
   * MFSA 2016-20/CVE-2016-1957: Memory leak in libstagefright when
     deleting an array during MP4 processing
   * MFSA 2016-21/CVE-2016-1958: Displayed page address can be overridden
   * MFSA 2016-23/CVE-2016-1960: Use-after-free in HTML5 string parser
   * MFSA 2016-24/CVE-2016-1961: Use-after-free in SetBody
   * MFSA 2016-25/CVE-2016-1962: Use-after-free when using multiple
     WebRTC data channels
   * MFSA 2016-27/CVE-2016-1964: Use-after-free during XML transformations
   * MFSA 2016-28/CVE-2016-1965: Addressbar spoofing though history
     navigation and Location protocol property
   * MFSA 2016-31/CVE-2016-1966: Memory corruption with malicious NPAPI
     plugin
   * MFSA 2016-34/CVE-2016-1974: Out-of-bounds read in HTML parser
     following a failed allocation
   * MFSA 2016-35/CVE-2016-1950: Buffer overflow during ASN.1 decoding in
     NSS
   * MFSA 2016-37/CVE-2016-1977/CVE-2016-2790/CVE-2016-2791/
     CVE-2016-2792/CVE-2016-2793/CVE-2016-2794/CVE-2016-2795/
     CVE-2016-2796/CVE-2016-2797/CVE-2016-2798/CVE-2016-2799/
     CVE-2016-2800/CVE-2016-2801/CVE-2016-2802: Font vulnerabilities in
     the Graphite 2 library.

Mozilla NSPR was updated to version 4.12, fixing following bugs:

   * Added a PR_GetEnvSecure function, which attempts to detect if the
     program is being executed with elevated privileges, and returns NULL
     if detected. It is recommended to use this function in general
     purpose library code.
   * Fixed a memory allocation bug related to the PR_*printf functions
   * Exported API PR_DuplicateEnvironment, which had already been added
     in NSPR 4.10.9
   * Several minor correctness and compatibility fixes.

Mozilla NSS was updated to fix security issues:

   * MFSA 2016-15/CVE-2016-1978: Use-after-free in NSS during SSL
     connections in low memory
   * MFSA 2016-35/CVE-2016-1950: Buffer overflow during ASN.1 decoding in
     NSS
   * MFSA 2016-36/CVE-2016-1979: Use-after-free during processing of DER
     encoded keys in NSS.