Red Hat, Fedora Servers Compromised
An anonymous reader writes "In an email sent to the fedora-announce mailing list, it has been revealed that both Fedora and Red Hat servers have been compromised. As a result Fedora is changing their package signing key. Red Hat has released a security advisory and a script to detect potentially compromised openssh packages."
In the Redhat announcement, we can infer the passphrase and signing key were compromised, because the attacker signed invalid openssh packages.
Incorrect. The signing key used by Red Hat is inside a hardware security token.
So even though it was possible to use the token to sign packages as soon as access to the token has been removed for the intruder, he is unable to sign any more packages.
Mark Cox of the Red Hat security team explained this setup in a blog post some time ago at http://www.awe.com/mark/blog/200701300906.html.