Mozilla Firefox before 3.0.15 and 3.5.x before 3.5.4, and SeaMonkey before 2.0, does not properly handle a right-to-left override (aka RLO or U+202E) Unicode character in a download filename, which allows remote attackers to spoof file extensions via a crafted filename, as demonstrated by displaying a non-executable extension for an executable file.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Seamonkey | Mozilla | 1.1.10 | 1.1.10 |
| Seamonkey | Mozilla | 1.0.3 | 1.0.3 |
| Firefox | Mozilla | 3.5.3 | 3.5.3 |
| Seamonkey | Mozilla | 1.1.8 | 1.1.8 |
| Firefox | Mozilla | 3.0.7 | 3.0.7 |
| Seamonkey | Mozilla | 1.0.1 | 1.0.1 |
| Seamonkey | Mozilla | 1.1.7 | 1.1.7 |
| Firefox | Mozilla | 3.0.9 | 3.0.9 |
| Seamonkey | Mozilla | 1.0.6 | 1.0.6 |
| Seamonkey | Mozilla | 1.0.9 | 1.0.9 |
| Seamonkey | Mozilla | 1.1.3 | 1.1.3 |
| Seamonkey | Mozilla | 1.0 | 1.0 |
| Firefox | Mozilla | 3.0.8 | 3.0.8 |
| Seamonkey | Mozilla | 1.1.17 | 1.1.17 |
| Seamonkey | Mozilla | 1.1.5 | 1.1.5 |
| Seamonkey | Mozilla | 1.0.7 | 1.0.7 |
| Seamonkey | Mozilla | 1.0 | 1.0 |
| Firefox | Mozilla | 3.0.4 | 3.0.4 |
| Seamonkey | Mozilla | 1.1 | 1.1 |
| Firefox | Mozilla | 3.0.5 | 3.0.5 |
| Seamonkey | Mozilla | 1.0 | 1.0 |
| Seamonkey | Mozilla | 1.1.12 | 1.1.12 |
| Firefox | Mozilla | 3.5.1 | 3.5.1 |
| Seamonkey | Mozilla | 1.1 | 1.1 |
| Firefox | Mozilla | 3.5.2 | 3.5.2 |
| Seamonkey | Mozilla | 1.1.14 | 1.1.14 |
| Seamonkey | Mozilla | 1.1.2 | 1.1.2 |
| Firefox | Mozilla | 3.0.10 | 3.0.10 |
| Seamonkey | Mozilla | 1.0.2 | 1.0.2 |
| Seamonkey | Mozilla | 1.0.8 | 1.0.8 |
| Seamonkey | Mozilla | * | 1.5.0.10 |
| Seamonkey | Mozilla | 1.1.11 | 1.1.11 |
| Firefox | Mozilla | 3.0.12 | 3.0.12 |
| Seamonkey | Mozilla | 1.5.0.9 | 1.5.0.9 |
| Firefox | Mozilla | 3.0.3 | 3.0.3 |
| Seamonkey | Mozilla | 1.1 | 1.1 |
| Seamonkey | Mozilla | 1.1.1 | 1.1.1 |
| Seamonkey | Mozilla | 1.5.0.8 | 1.5.0.8 |
| Seamonkey | Mozilla | 1.0.5 | 1.0.5 |
| Seamonkey | Mozilla | 1.1.15 | 1.1.15 |
| Firefox | Mozilla | 3.0.6 | 3.0.6 |
| Seamonkey | Mozilla | 1.1.6 | 1.1.6 |
| Seamonkey | Mozilla | 1.1.16 | 1.1.16 |
| Firefox | Mozilla | 3.0.1 | 3.0.1 |
| Firefox | Mozilla | 3.0.2 | 3.0.2 |
| Seamonkey | Mozilla | 1.0.4 | 1.0.4 |
| Seamonkey | Mozilla | 1.1.9 | 1.1.9 |
| Seamonkey | Mozilla | 1.1.13 | 1.1.13 |
| Firefox | Mozilla | 3.0 | 3.0 |
| Firefox | Mozilla | 3.0.13 | 3.0.13 |
| Seamonkey | Mozilla | 1.1.4 | 1.1.4 |
| Firefox | Mozilla | 3.0.11 | 3.0.11 |