Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 10.x before 10.0.12 and 17.x before 17.0.2, and SeaMonkey before 2.15 allow remote attackers to spoof the address bar via vectors involving authentication information in the userinfo field of a URL, in conjunction with a 204 (aka No Content) HTTP status code.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 18.0 (excluding) |
| Firefox_esr | Mozilla | 10.0 (including) | 10.0.12 (excluding) |
| Firefox_esr | Mozilla | 17.0 (including) | 17.0.2 (excluding) |
| Seamonkey | Mozilla | * | 2.15 (excluding) |
| Thunderbird | Mozilla | * | 17.0.2 (excluding) |
| Thunderbird_esr | Mozilla | 10.0 (including) | 10.0.12 (excluding) |
| Thunderbird_esr | Mozilla | 17.0 (including) | 17.0.2 (excluding) |