Mozilla Network Security Services (NSS) before 3.12.3, Firefox before 3.0.13, Thunderbird before 2.0.0.23, and SeaMonkey before 1.1.18 do not properly handle a 0 character in a domain name in the subjects Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority. NOTE: this was originally reported for Firefox before 3.5.
The product does not validate, or incorrectly validates, a certificate.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 3.0.13 (excluding) |
| Network_security_services | Mozilla | * | 3.12.3 (excluding) |
| Seamonkey | Mozilla | * | 1.1.18 (excluding) |
| Thunderbird | Mozilla | * | 2.0.0.23 (excluding) |