ProFTPD.org Compromised, Backdoor Distributed

Orome1 writes "A warning has been issued by the developers of ProFTPD, the popular FTP server software, about a compromise of the main distribution server of the software project that resulted in attackers exchanging the offered source files for ProFTPD 1.3.3c with a version containing a backdoor. It is thought that the attackers took advantage of an unpatched security flaw in the FTP daemon in order to gain access to the server."

Comments

Dumb comment.

[Anonymous Coward]

And how, exactly, would the attackers sign the distribution files with the same private key the project uses?