The Internationalized Domain Name (IDN) display algorithm in Mozilla Firefox before 22.0 does not properly handle the .com, .name, and .net top-level domains, which allows remote attackers to spoof the address bar via unspecified homograph characters.
| Software | From | Fixed in |
|---|---|---|
| mozilla / firefox | 19.0 | 19.0.x |
| mozilla / firefox | 19.0.2 | 19.0.2.x |
| mozilla / firefox | 20.0.1 | 20.0.1.x |
| mozilla / firefox | 19.0.1 | 19.0.1.x |
| mozilla / firefox | 20.0 | 20.0.x |
| mozilla / firefox | - | 21.0.x |