Comment 1 for bug 1078124

Changelog also showed a number of CVE issues:
libav (4:0.8.4-0ubuntu0.12.04.1)
  * Update to 0.8.4 to fix multiple security issues. (LP: #1075593)
    - CVE-2012-2772
    - CVE-2012-2775
    - CVE-2012-2776
    - CVE-2012-2777
    - CVE-2012-2779
    - CVE-2012-2784
    - CVE-2012-2786
    - CVE-2012-2787
    - CVE-2012-2788
    - CVE-2012-2789
    - CVE-2012-2790
    - CVE-2012-2793
    - CVE-2012-2794
    - CVE-2012-2796
    - CVE-2012-2798
    - CVE-2012-2800
    - CVE-2012-2801
    - CVE-2012-2802

libproxy (0.4.7-0ubuntu4.1) precise-security
  * SECURITY UPDATE: possible remote code execution via buffer overflow
    - debian/patches/CVE-2012-4504.patch: move length check to proper
      location in libproxy/url.cpp.
    - CVE-2012-4504