Use-after-free interacting with text directionality
- October 14, 2014
- Firefox, Firefox ESR, Firefox OS, SeaMonkey, Thunderbird
- Fixed in
- Firefox 33
- Firefox ESR 31.2
- Firefox OS 2.2
- SeaMonkey 2.30
- Thunderbird 31.2
Security researcher regenrecht reported, via TippingPoint's Zero Day Initiative, a use-after-free during text layout when interacting with text direction. This results in a crash which can lead to arbitrary code execution.
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.