PreserveWrapper has inconsistent behavior
- June 25, 2013
- Boris Zbarsky
- Firefox, Firefox ESR, SeaMonkey, Thunderbird, Thunderbird ESR
- Fixed in
- Firefox 22
- Firefox ESR 17.0.7
- SeaMonkey 2.19
- Thunderbird 17.0.7
- Thunderbird ESR 17.0.7
Mozilla developer Boris Zbarsky found that when
PreserveWrapper was used in cases where a wrapper is not set, the
preserved-wrapper flag on the wrapper cache is cleared. This could
potentially lead to an 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.