The remote host is missing an update to mydns announced via advisory DSA 963-1. NISCC reported that MyDNS, a DNS server using an SQL database for data storage, can be tricked into an infinite loop by a remote attacker and hence cause a denial of service condition. The old stable distribution (woody) does not contain mydns packages.

For the stable distribution (sarge) this problem has been fixed in version 1.0.0-4sarge1. For the unstable distribution (sid) this problem has been fixed in version 1.1.0+pre-3. We recommend that you upgrade your mydns package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20963-1