The remote host is missing an update to bind9 announced via advisory DSA 1254-1. It was discovered that the Bind name server daemon is vulnerable to denial of service by triggering an assertion through a crafted DNS query. This only affects installations which use the DNSSEC extentions.

For the stable distribution (sarge) this problem has been fixed in version 9.2.4-1sarge2. For the upcoming stable distribution (etch) this problem will be fixed soon. For the unstable distribution (sid) this problem has been fixed in version 9.3.4-1. We recommend that you upgrade your bind9 package. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201254-1