Imagemap CGI which is written by C language is distributed with OmniHTTPd Pro2.04(shareware) and Ver1.01 (freeware), it has a security hole by the buffer overflow. Any instructions can be executed on the victim host by using this buffer overflow bug.
23049799fe2224b9687d2345582b6e2e023c1ecd39d0e9ef35a33a70b0a2fc7d