Use-after-free setting text directionality
- September 2, 2014
- Firefox, Firefox ESR, SeaMonkey, Thunderbird
- Fixed in
- Firefox 32
- Firefox ESR 24.8
- Firefox ESR 31.1
- SeaMonkey 2.29
- Thunderbird 24.8
- Thunderbird 31.1
Security researcher regenrecht reported, via TippingPoint's Zero Day Initiative, a use-after-free during text layout when interacting with the setting of text direction. This results in a use-after-free 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.