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Mozilla Foundation Security Advisory 2015-19

Out-of-bounds read and write while rendering SVG content

February 24, 2015
Abhishek Arya
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


Security researcher Abhishek Arya (Inferno) of the Google Chrome Security Team used the Address Sanitizer tool to report an out-of-bounds read and an out-of-bounds write when rendering an improperly formatted SVG graphic. This could potentially allow the attacker to read uninitialized memory.

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.