The mozilla::dom::TextTrack::AddCue function in Mozilla Firefox before 29.0 and SeaMonkey before 2.26 does not properly perform garbage collection for Text Track Manager variables, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and heap memory corruption) via a crafted VIDEO element in an HTML document.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 29.0 (excluding) |
| Seamonkey | Mozilla | * | 2.26 (excluding) |
| Firefox | Ubuntu | lucid | * |
| Firefox | Ubuntu | precise | * |
| Firefox | Ubuntu | quantal | * |
| Firefox | Ubuntu | saucy | * |
| Firefox | Ubuntu | trusty | * |
| Firefox | Ubuntu | upstream | * |