| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 3.0.13 | 3.0.13 |
| network security services | < 3.12.3 | 3.12.3 |
| seamonkey | < 1.1.18 | 1.1.18 |
| thunderbird | < 2.0.0.23 | 2.0.0.23 |
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 subject's 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.
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