GC hazard with default compartments and frame chain restoration
- September 17, 2013
- Nils, Bobby Holley
- Firefox, SeaMonkey, Thunderbird
- Fixed in
- Firefox 24
- SeaMonkey 2.21
- Thunderbird 24
Security researcher Nils reported a potentially exploitable use-after-free in an early test version of Firefox 25. Mozilla developer Bobby Holley found that the cause was an older garbage collection bug that a more recent change made easier to trigger.
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.