The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834 http://www.vuxml.org/freebsd/8015600f-2c80-11e0-9cc1-00163e5bf4f9.html

The following package is affected: maradns CVE-2011-0520 The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and probably other versions allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a long DNS hostname with a large number of labels, which triggers a heap-based buffer overflow.