Nmap Development mailing list archives
--script-updatedb causes unhandled exception
From: jah <jah () zadkiel plus com>
Date: Sat, 26 Jul 2008 16:22:06 +0100
Hello, I crashed nmap trying to update scripts/script.db. I noticed, whilst stepping through a debug build, that between opening and closing script.db, nothing was being written to it. The following loop was never entered for each script processed: while (lua_next(L, -2) != 0) { lua_pushvalue(L, -3); // string.lower lua_insert(L, -2); // put below category string lua_call(L, 1, 1); // lowered string on stack fprintf(scriptdb, "Entry{ category = \"%s\", filename = \"%s\" }\n", lua_tostring(L, -1), filebase); lua_pop(L, 1); } Hence, nothing to write to the db. I tried while (lua_next(L, -3) != 0) and this seems to fix that issue and results in a proper script.db. I've attached a patch, but I'm not sure whether it is the proper fix... Regards, jah
--- nse_init.cc.orig 2008-07-26 16:09:37.031250000 +0100 +++ nse_init.cc 2008-07-26 15:40:26.390625000 +0100 @@ -381,7 +381,7 @@ lua_getglobal(L, "string"); lua_getfield(L, -1, "lower"); lua_replace(L, -2); lua_pushnil(L); - while (lua_next(L, -2) != 0) + while (lua_next(L, -3) != 0) { lua_pushvalue(L, -3); // string.lower lua_insert(L, -2); // put below category string
_______________________________________________ Sent through the nmap-dev mailing list http://cgi.insecure.org/mailman/listinfo/nmap-dev Archived at http://SecLists.Org
Current thread:
- --script-updatedb causes unhandled exception jah (Jul 26)
- Re: --script-updatedb causes unhandled exception Patrick Donnelly (Jul 26)