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Mozilla Foundation Security Advisory 2014-58

Use-after-free in Web Audio due to incorrect control message ordering

Announced
July 22, 2014
Reporter
Atte Kettunen
Impact
High
Products
Firefox, Thunderbird
Fixed in
  • Firefox 31
  • Thunderbird 31

Description

Using the Address Sanitizer tool, security researcher Atte Kettunen from OUSPG discovered a use-after-free in Web Audio due to an issue with how control messages for Web Audio are ordered and processed. 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.

References