Endpoint Vulnerability

Trust settings for built-in roots ignored during EV certificate validation

Description

Firefox user Sijie Xia reported that if a user explicitly removes the trust for extended validation (EV) capable root certificates in the certificate manager, the change is not properly used when validating EV certificates, causing the setting to be ignored. This removes the ability of users to explicitly untrust root certificates from specific certificate authorities.

Affected Products

Thunderbird

References

CVE-2013-6673,