CVE-2009-2408

Name of the Vulnerable Software and Affected Versions Mozilla Network Security Services (NSS) versions prior to 3.12.3 Firefox versions prior to 3.0.13 Thunderbird versions prior to 2.0.0.23 SeaMonkey versions prior to 1.1.18

Description The issue arises from improper handling of a '0' character in a domain name within the subject's Common Name (CN) field of an X.509 certificate. This allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.

Recommendations For Mozilla Network Security Services (NSS) versions prior to 3.12.3, update to version 3.12.3 or later. For Firefox versions prior to 3.0.13, update to version 3.0.13 or later. For Thunderbird versions prior to 2.0.0.23, update to version 2.0.0.23 or later. For SeaMonkey versions prior to 1.1.18, update to version 1.1.18 or later.