Ubuntu Security Notice 885-1 – It was discovered that the Transmission web interface was vulnerable to cross-site request forgery (CSRF) attacks. If a user were tricked into opening a specially crafted web page in a browser while Transmission was running, an attacker could trigger commands in Transmission. This issue affected Ubuntu 9.04. Dan Rosenberg discovered that Transmission did not properly perform input validation when processing torrent files. If a user were tricked into opening a crafted torrent file, an attacker could overwrite files via directory traversal.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/85132/USN-885-1.txt
Source: https://packetstormsecurity.com/files/85132/Ubuntu-Security-Notice-885-1.html