The version of htdig that was shipped in Debian GNU/Linux 2.1 has a problem with calling external programs to handle non-HTML documents: it calls the external program with the document as a parameter, but does not check for shell escapes. This can be exploited by creating files with filenames that include shell escapes to run arbitraty commands on the machine that runs htdig. Debian security homepage here.
The version of htdig that was shipped in Debian GNU/Linux 2.1 has a problem with calling external programs to handle non-HTML documents: it calls the external program with the document as a parameter, but does not check for shell escapes. This can be exploited by creating files with filenames that include shell escapes to run arbitraty commands on the machine that runs htdig. Debian security homepage here.