-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advisory ID: SYSS-2015-070 Product: perfact::mpa Manufacturer: PerFact Innovation GmbH & Co. KG Affected Version(s): Custom versions using PerFact DB_Utils (Toolkit) < v3.2 Tested Version(s): Custom version with PerFact DB_Utils (Toolkit) < v3.2 Vulnerability Type: Cross-Site Scripting (CWE-79) Risk Level: Medium Solution Status: Fixed Manufacturer Notification: 2015-12-18 Solution Date: 2016-01-18 Public Disclosure: 2016-02-29 CVE Reference: Not yet assigned Authors of Advisory: Matthias Deeg and Sven Freund (SySS GmbH) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Overview: The software solution perfact::mpa is a software architecture that, for instance, is used to build web applications for the secure and reliable remote maintenance of machines via the Internet (see [1]). According to the manufacturer, remote control software built with perfact::mpa impresses through the following features: * location-independent and central monitoring, * maintenance and error management, * authorized remote access, and * integrated documentation of incidents and services. Due to improper input validation, the web application perfact::mpa is vulnerable to reflected cross-site scripting attacks. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Vulnerability Details: SySS GmbH found out that the request new user and translation functionalities of the web application perfact::mpa are prone to reflected cross-site scripting attacks. This cross-site scripting vulnerability allows an attacker to send a manipulated link to his victim in order to execute arbitrary JavaScript code in the context of his victim's web browser. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Proof of Concept (PoC): 1) NewAppUserReq (request new user functionality) The following URL is an example of an attack vector exploiting a reflected cross-site scripting vulnerability via the parameter "no_user_name" of the request new user functionality: https://<HOST>/<PATH>/MPA2/MPA2/Open/NewAppUserReq/index_html?no_user=1 &no_user_name=<script>alert("SySS XSS!")</script> 2) i18n_wrapper_call (translation functionality) The following URL is an example for an attack vector exploiting a reflected cross-site scripting vulnerability via the parameter "content" of the translation functionality (i18n_wrapper_call): https://<HOST>/<PATH>/i18n_wrapper_call ?content=%3Cscript%3Ealert%28%22SySS%20XSS!%22%29%3C/script%3E ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Solution: According to information by the PerFact Innovation GmbH & Co. KG, the described security issue has been fixed in PerFact DB_Utils (toolkit) software version 3.2. Please contact the manufacturer for further information or support. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclosure Timeline: 2015-12-18: Vulnerability reported to manufacturer 2016-01-18: Response from manufacturer with detailed information about the reported security vulnerability and its solution status 2016-02-05: E-mail to manufacturer according two open questions 2016-02-05: Response from manufacturer with further information 2016-02-29: Public release of security advisory ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ References: [1] Product Web Site for perfact::mpa http://perfact.de/mpa/index_html [2] SySS Security Advisory SYSS-2015-070 https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2015-070.txt [3] SySS Responsible Disclosure Policy https://www.syss.de/en/responsible-disclosure-policy/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Credits: This security vulnerability was found by Matthias Deeg and Sven Freund of the SySS GmbH. E-Mail: matthias.deeg (at) syss.de Public Key: https://www.syss.de/fileadmin/dokumente/Materialien/PGPKeys/Matthias_Deeg.asc Key fingerprint = D1F0 A035 F06C E675 CDB9 0514 D9A4 BF6A 34AD 4DAB E-Mail: sven.freund (at) syss.de Public Key: https://www.syss.de/fileadmin/dokumente/Materialien/PGPKeys/Sven_Freund.asc Key fingerprint = DCDB 7627 C1E3 9CE8 62DF 2666 8A5F A853 415D 46DC ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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----- iQIcBAEBCgAGBQJW0/AIAAoJENmkv2o0rU2ri/gP/1YJoIZoLGropW6R8kxpz0l0 GB8oM+PXC2KEI101suBNI5ezLvPuonAFjobq0w5ChfEj7EEfsiAVUZ5Ftdk2mgqG UvrpMXm3UU5nxXjniqxK/23BgH0yazQv/c1Fp+gqGwp7UIFazt2x6eLGowcbJ3Df 4ePJmm6MFOlvoh457ePmZ81QwZFgHgrwVnr3Hhk4myblxZvXdJRnK+rRYuiPq4Ga 4wxoU3L2OjvDunFAKKUhCWk5+cAC+U/uwELH7rYko5M9eoz6FGBoXZBGamsQlyRh ACoL6GJCkfMykwvDJEQ2hZywFnuW43uIlasndmNKDP1p3I7UHcFNTf9ogx33+RVr 9WsvCk0wZaOTvP95wHle2WJx2jrcbetG3m2CPVkVAOZEYaoXGVzqmjK/SabsIooV EfcMjJUCRyiyytyAbjR4MzjpTkQ7CqR4ylzPFY7tIjZmA1aAg/1Ocv8KY7W5Fv// D8PZtZj25+lWmaSwuVneV9n+gR43oIAc42//Xb4pcbF77hYd6aS3616KEsJ69ea/ P2wvOcqN1KxfvyBPc1DcSj01/IsHlqgdQiZQqh8eHNGxZBW5HTUeUcJ/xD4Undxn ZE5CH23m/5RIwXVb2TL2jzmTaV8LcESxOVidIaKA6ux3gNpRLs+ZdDBX6UXH4l3P leR6vzI/DeTs2+gbilYm =5GI9 -----END PGP SIGNATURE-----