Mozilla Foundation Security Advisory 2014-87
Use-after-free during HTML5 parsing
- Announced
- December 2, 2014
- Reporter
- SkyLined
- Impact
- Critical
- Products
- Firefox, Firefox ESR, Firefox OS, SeaMonkey, Thunderbird
- Fixed in
-
- Firefox 34
- Firefox ESR 31.3
- Firefox OS 2.2
- SeaMonkey 2.31
- Thunderbird 31.3
Description
Security researcher SkyLined reported a use-after-free created by triggering the creation of a second root element while parsing HTML written to a document created with document.open(). 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.