Mozilla Foundation Security Advisory 2012-80
Crash with invalid cast when using instanceof operator
- Announced
- October 9, 2012
- Reporter
- Ms2ger
- Impact
- Critical
- Products
- Firefox, SeaMonkey, Thunderbird
- Fixed in
-
- Firefox 16
- SeaMonkey 2.13
- Thunderbird 16
Description
Mozilla community member Ms2ger reported a crash due to an invalid cast when using the instanceof operator on certain types of JavaScript objects. This can lead to a potentially exploitable crash.
In general these flaws cannot be exploited through email in the Thunderbird and SeaMonkey products because scripting is disabled, but are potentially a risk in browser or browser-like contexts in those products.