Univention Corporate Server 3.2 erratum 355 (security)

Firefox has been updated to the new Firefox Extended Support Release based
on Firefox 38. The previosly used ESR 31 series is no longer maintained.
This update consists of two updates for firefox-en and firefox-de.
Several vulnerabilities have been fixed with the update to Firefox ESR 38.2
* Heap-buffer-overflow (read of size 0xffffffff) when playing a m4v video
  (CVE-2015-0797)
* Heap-buffer-overflow in SVGTextFrame (CVE-2015-2710)
* Heap-use-after-free in SetBreaks (CVE-2015-2713)
* Buffer overflow xml parser (CVE-2015-2716)
* NSS incorrectly permits skipping of ServerKeyExchange (CVE-2015-2721)
* Use After Free in CanonicalizeXPCOMParticipant (CVE-2015-2722)
* Memory safety bugs fixed in Firefox ESR 31.8, Firefox 38.1, and Firefox 39.
  (CVE-2015-2724)
* Memory safety bugs fixed in Firefox 38.1 and Firefox 39. (CVE-2015-2725)
* Memory safety bugs fixed in Firefox 39. (CVE-2015-2726)
* Type Confusion mozilla::dom::indexedDB::IndexedDatabaseManager
  (CVE-2015-2728)
* ECC correctness issues (CVE-2015-2730)
* Use After Free in CanonicalizeXPCOMParticipant() with dedicated worker
  (CVE-2015-2733)
* CairoTextureClientD3D9::BorrowDrawTarget using uninitialized memory
  (CVE-2015-2734)
* Memory safety bug due to bad test in nsZipArchive.cpp (CVE-2015-2735)
* nsZipArchive::BuildFileList has memory-safety bug (CVE-2015-2736)
* rx::d3d11::SetBufferData using uninitialized memory (CVE-2015-2737)
* YCbCrImageDataDeserializer::ToDataSourceSurface using uninitialized memory
  (CVE-2015-2738)
* Memory safety problem in ArrayBufferBuilder::append (CVE-2015-2739)
* Overflow in nsXMLHttpRequest::AppendToResponseText causes memory-safety bug
  (CVE-2015-2740)
* Privilege escalation in PDF.js (CVE-2015-2743)
* NSS accepts export-length DHE keys with regular DHE cipher suites
  (CVE-2015-4000)
* out of bounds read at mozilla::AudioSink (CVE-2015-4475)
* JSON.parse with reviver allows redefining non-configurable properties
  (CVE-2015-4478)
* MPEG4 saio Chunk Integer Overflow (libstagefright) (CVE-2015-4479)
* crash in stagefright::SampleTable::isValid() with h264 mp4 (CVE-2015-4480)
* Out of bounds write in mar_read.c (CVE-2015-4482)
* crash in void js::jit::AssemblerX86Shared::lock_addl<js::jit::Imm32>
  (CVE-2015-4484)
* Heap-buffer-overflow WRITE in resize_context_buffers (CVE-2015-4485)
* Out of bounds read in decrease_ref_count (CVE-2015-4486)
* Overflow nsTSubstring::ReplacePrep causes memory-safety bugs
  in stringlibrary (CVE-2015-4487)
* StyleAnimationValue::operator= uses objects after delete on self-assignment
  (CVE-2015-4488)
* Self-assignment in nsTArray_Impl causes memory-safety bug (CVE-2015-4489)
* gdk-pixbuf heap overflow and DoS (CVE-2015-4491)
* Use After Free in XMLHttpRequest::Open() (CVE-2015-4492)
* Stagefright: heap-buffer-overflow crash
  stagefright::ESDS::parseESDescriptor (CVE-2015-4493)