The Web workers implementation in Mozilla Firefox before 27.0 and SeaMonkey before 2.24 allows remote attackers to execute arbitrary code via vectors involving termination of a worker process that has performed a cross-thread object-passing operation in conjunction with use of asm.js.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 27.0 (excluding) |
| Seamonkey | Mozilla | * | 2.24 (excluding) |
| Firefox | Ubuntu | lucid | * |
| Firefox | Ubuntu | precise | * |
| Firefox | Ubuntu | quantal | * |
| Firefox | Ubuntu | saucy | * |
| Firefox | Ubuntu | upstream | * |