Mozilla Firefox 4.x through 6, Thunderbird before 7.0, and SeaMonkey before 2.4 do not prevent manual add-on installation in response to the holding of the Enter key, which allows user-assisted remote attackers to bypass intended access restrictions via a crafted web site that triggers an unspecified internal error.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | 4.0 (including) | 4.0 (including) |
| Firefox | Mozilla | 4.0-beta1 (including) | 4.0-beta1 (including) |
| Firefox | Mozilla | 4.0-beta10 (including) | 4.0-beta10 (including) |
| Firefox | Mozilla | 4.0-beta11 (including) | 4.0-beta11 (including) |
| Firefox | Mozilla | 4.0-beta12 (including) | 4.0-beta12 (including) |
| Firefox | Mozilla | 4.0-beta2 (including) | 4.0-beta2 (including) |
| Firefox | Mozilla | 4.0-beta3 (including) | 4.0-beta3 (including) |
| Firefox | Mozilla | 4.0-beta4 (including) | 4.0-beta4 (including) |
| Firefox | Mozilla | 4.0-beta5 (including) | 4.0-beta5 (including) |
| Firefox | Mozilla | 4.0-beta6 (including) | 4.0-beta6 (including) |
| Firefox | Mozilla | 4.0-beta7 (including) | 4.0-beta7 (including) |
| Firefox | Mozilla | 4.0-beta8 (including) | 4.0-beta8 (including) |
| Firefox | Mozilla | 4.0-beta9 (including) | 4.0-beta9 (including) |
| Firefox | Mozilla | 4.0.1 (including) | 4.0.1 (including) |
| Firefox | Mozilla | 5.0 (including) | 5.0 (including) |
| Firefox | Mozilla | 6.0 (including) | 6.0 (including) |