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Mozilla Foundation Security Advisory 2014-68

Use-after-free during DOM interactions with SVG

September 2, 2014
Abhishek Arya
Firefox, Firefox ESR, SeaMonkey, Thunderbird
Fixed in
  • Firefox 32
  • Firefox ESR 31.1
  • SeaMonkey 2.29
  • Thunderbird 31.1


Security researcher Abhishek Arya (Inferno) of the Google Chrome Security Team used the Address Sanitizer tool to discover a use-after-free during cycle collection. This was found in interactions with the SVG content through the document object model (DOM) with animating SVG content. This leads to a potentially exploitable crash.

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