The remote host is missing an update to lpr-ppd announced via advisory DSA 275-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20275-1

A buffer overflow has been discovered in lpr, a BSD lpr/lpd line printer spooling system. This problem can be exploited by a local user to gain root privileges, even if the printer system is set up properly. For the stable distribution (woody) this problem has been fixed in version 0.72-2.1. The old stable distribution (potato) does not contain lpr-ppd packages. For the stable distribution (sid) this problem has been fixed in version 0.72-3. We recommend that you upgrade your lpr-ppd package immediately.