Mozilla Foundation Security Advisory 2012-34

Miscellaneous memory safety hazards (rv:13.0/ rv:10.0.5)

June 5, 2012
Firefox, Firefox ESR, SeaMonkey, Thunderbird, Thunderbird ESR
Fixed in
  • Firefox 13
  • Firefox ESR 10.0.5
  • SeaMonkey 2.10
  • Thunderbird 13
  • Thunderbird ESR 10.0.5


Mozilla developers 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 and SeaMonkey products because scripting is disabled, but are potentially a risk in browser or browser-like contexts in those products.


Jesse Ruderman, Igor Bukanov, Bill McCloskey, Christian Holler, Andrew McCreight, and Brian Bondy reported memory safety problems and crashes that affect Firefox 12.

Christian Holler reported a memory safety problem that affects Firefox ESR.

Igor Bukanov, Olli Pettay, Boris Zbarsky, and Jesse Ruderman reported memory safety problems and crashes that affect Firefox ESR and Firefox 12.

Ken Russell of Google reported a bug in NVIDIA graphics drivers that they needed to work around in the Chromium WebGL implementation. Mozilla has done the same in Firefox 13 and ESR 10.0.5.