phlyLabs phlyMail Lite 4.03.04 Open Redirect

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phlyLabs phlyMail Lite 4.03.04 (go param) Open Redirect Vulnerability  
  
  
Vendor: phlyLabs  
Product web page: http://www.phlymail.com  
Affected version: Lite 4.03.04  
  
Summary: phlyMail offers you an interface in the browser to have access  
to your emails, contacts, appointments, tasks, files and bookmakrs from  
anyhwere, where you have internet access. This can be your home, workplace,  
train station, abroad, offroad, in the woods or your own backyard.  
  
Desc: Input passed via the 'go' parameter in 'derefer.php' script is not  
properly verified before being used to redirect users. This can be exploited  
to redirect a user to an arbitrary website e.g. when a user clicks a specially  
crafted link to the affected script hosted on a trusted domain.  
  
  
-----------------------------------------------------------------------  
/frontend/derefer.php:  
----------------------  
  
33: if (!isset($_REQUEST['go'])) exit;  
34: $go = preg_replace('!\r|\n|\t!', '', $_REQUEST['go']);  
35: if (strlen($go) == 0) exit;  
36: if (!preg_match('!^(http://|https://|ftp://)!', $go) && $go{0} != '/') $go = 'http://'.$go;  
37:  
38: header('Location: '.$go);  
39: exit;  
  
-----------------------------------------------------------------------  
  
  
Tested on: Microsoft Windows 7 Ultimate SP1 (EN)  
Apache 2.4.2 (Win32)  
PHP 5.4.4  
MySQL 5.5.25a  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2013-5123  
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2013-5123.php  
  
  
13.01.2013  
  
--  
  
http://localhost/frontend/derefer.php?go=zeroscience.mk  
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