Buffer overflow while decoding WebM video
- September 22, 2015
- Atte Kettunen
- Firefox, Firefox ESR, SeaMonkey, Thunderbird
- Fixed in
- Firefox 41
- Firefox ESR 38.3
- SeaMonkey 2.38
- Thunderbird 38.3
Using the Address Sanitizer tool, security researcher Atte Kettunen discovered a buffer overflow in the nestegg library when decoding a WebM format video with maliciously formatted headers. This leads to a potentially exploitable crash.
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.