The Mozilla Windows updater can be called by a non-privileged user to delete an arbitrary local file by passing a special path to the callback parameter through the Mozilla Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 45.8 and Firefox < 52.
Weakness
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 52.0 (excluding) |
| Firefox | Ubuntu | upstream | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/122.html
- https://cwe.mitre.org/data/definitions/233.html
- https://cwe.mitre.org/data/definitions/58.html
References
- http://www.securityfocus.com/bid/96696
- http://www.securitytracker.com/id/1037966
- https://bugzilla.mozilla.org/show_bug.cgi?id=1321814
- https://www.mozilla.org/security/advisories/mfsa2017-05/
- https://www.mozilla.org/security/advisories/mfsa2017-06/
- http://www.securityfocus.com/bid/96696
- http://www.securitytracker.com/id/1037966
- https://bugzilla.mozilla.org/show_bug.cgi?id=1321814
- https://www.mozilla.org/security/advisories/mfsa2017-05/
- https://www.mozilla.org/security/advisories/mfsa2017-06/