phlyLabs phlyMail Lite 4.03.04 (go param) Open Redirect Vulnerability

Risk: Low
Local: No
Remote: Yes
CWE: CWE-601

phlyLabs phlyMail Lite 4.03.04 (go param) Open Redirect Vulnerability Vendor: phlyLabs Product web page: 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: 13.01.2013 -- http://localhost/frontend/derefer.php?


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