Internet Bug Bounty: Read beyond bounds in mod_isapi.c [zhbug_httpd_41]

Greetings. I have found a read-beyond-bounds bug in httpd that arises from an apparent logic error. The bug is in /modules/arch/win32/modisapi.c, on lines 979 and/or 983, which use the length of the path to the ISAPI DLL |strlenr-filename| to index into the string specified by the ISAPI DLL itsel...