updater.exe in Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 on Windows allows local users to write to arbitrary files by conducting a junction attack and waiting for an update operation by the Mozilla Maintenance Service.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | 38.0 (including) | 38.0 (including) |
| Firefox | Mozilla | 38.0.1 (including) | 38.0.1 (including) |
| Firefox | Mozilla | 38.0.5 (including) | 38.0.5 (including) |
| Firefox | Mozilla | 38.1.0 (including) | 38.1.0 (including) |
| Firefox | Mozilla | 38.1.1 (including) | 38.1.1 (including) |
| Firefox | Mozilla | 38.2.0 (including) | 38.2.0 (including) |
| Firefox | Mozilla | 38.2.1 (including) | 38.2.1 (including) |
| Firefox | Ubuntu | upstream | * |