If Firefox is installed to a user-writable directory, the Mozilla Maintenance Service would execute updater.exe from the install location…
mozilla·CWE-427·Published 2020-10-01
If Firefox is installed to a user-writable directory, the Mozilla Maintenance Service would execute updater.exe from the install location with system privileges. Although the Mozilla Maintenance Service does ensure that updater.exe is signed by Mozilla, the version could have been rolled back to a previous version which would have allowed exploitation of an older bug and arbitrary code execution with System Privileges. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 80, Thunderbird < 78.2, Thunderbird < 68.12, Firefox ESR < 68.12, and Firefox ESR < 78.2.
If Firefox is installed to a user-writable directory, the Mozilla Maintenance Service would execute updater.exe from the install location with system privileges. Although the Mozilla Maintenance Service does ensure that updater.exe is signed by Mozilla, the version could have been rolled back to a previous version which would have allowed exploitation of an older bug and arbitrary code execution with System Privileges. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 80, Thunderbird < 78.2, Thunderbird < 68.12, Firefox ESR < 68.12, and Firefox ESR < 78.2.
Si Firefox está instalado en un directorio escribible por el usuario, el Servicio de Mantenimiento de Mozilla ejecutará el archivo updater.exe desde la ubicación de instalación con privilegios del sistema. Aunque el Servicio de Mantenimiento de Mozilla garantiza que el archivo updater.exe esté firmado por Mozilla, la versión podría haberse revertido a una versión anterior, lo que podría haber permitido una explotación de un error anterior y una ejecución de código arbitrario con Privilegios System. *Nota: este problema solo afectó a los sistemas operativos Windows. Otros sistemas operativos no están afectados.*. Esta vulnerabilidad afecta a Firefox versiones anteriores a 80, Thunderbird versiones anteriores a 78.2, Thunderbird versiones anteriores a 68.12, Firefox ESR versiones anteriores a 68.12 y Firefox ESR versiones anteriores a 78.2
| Version | Type | Source | Base | Exp | Impact | Vector |
|---|---|---|---|---|---|---|
| 2.0 | Primary | NVD | 9.3 | 8.6 | 10.0 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
| 3.1 | Primary | NVD | 8.8 | 2.8 | 5.9 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |