The remote host is missing an update to htdig announced via advisory DSA 080-1.
Nergal reported a vulnerability in the htsearch program which is distributed as part of the ht://Dig package, a indexing and searching system for small domains or intranets. Using former versions it was able to pass the parameter `-c' to the cgi program in order to use a different configuration file. A malicious user could point htsearch to a file like `/dev/zero' and let the server run in an endless loop, trying to read config parameters. If the user has write permission on the server he can point the program to it and retrive any file readable by the webserver user id. This problem has been fixed in version of 3.1.5-2.1 for Debian GNU/Linux 2.2. We recommend that you upgrade your htdig package immediately.