Mozilla Foundation Security Advisory 2015-11

Miscellaneous memory safety hazards (rv:36.0 / rv:31.5)

February 24, 2015
Mozilla Developers and Community Members
Firefox, Firefox ESR, Firefox OS, SeaMonkey, Thunderbird
Fixed in
  • Firefox 36
  • Firefox ESR 31.5
  • Firefox OS 2.2
  • SeaMonkey 2.33
  • Thunderbird 31.5


Mozilla developers and community identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to run arbitrary code.

In general these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled, but are potentially a risk in browser or browser-like contexts.


Carsten Book, Christoph Diehl, Gary Kwong, Jan de Mooij, Liz Henry, Byron Campen, Tom Schuster, and Ryan VanderMeulen reported memory safety problems and crashes that affect Firefox ESR 31.4 and Firefox 35.

Christian Holler, Gary Kwong, Jesse Ruderman, Byron Campen, Randell Jesup, Robin Whittleton, Jon Coppeard, and Nikhil Marathe reported memory safety problems and crashes that affect Firefox 35.