TC-SA-2013-01: Reflected Cross-Site-Scripting (XSS) vulnerability in e107 CMS v1.0.2
Published: 2013/04/03 Version 1.0 Affected Products: e107 version 1.0.2 (others not tested) http://www.e107.org References: TC-SA-2013-01 www.tele-consulting.com/advisories/TC-SA-2013-01.txt (used for updates) CVE-2013-2750 - Reflected Cross-Site-Scripting (XSS) vulnerability in e107 CMS v1.0.2 Summary: "e107 is a free (open-source) content management system allowing you to easily manage and publish your content. Developers can save time in building websites and powerful online applications. Users can avoid programming completely!" (www.e107.org) The content_preset.php Script in e107 CMS is vulnerable to reflected Cross-Site-Scripting (XSS) attacks. Malicious code is not sanitized when using "%00" in conjuction with "%0d%0a" within GET-Parameter. Effect: Under certain circumstances it is possible that attackers may inject arbitrary script code e. g. to steal authentication data. Vulnerable Scripts: /e107_plugins/content/handlers/content_preset.php Examples: http://[host]/e107_plugins/content/handlers/content_preset.php? %3c%00script%0d%0a>alert('reflexted%20XSS')</script> Possible Solutions: Use e107 v1.0.3 (contains updated content_preset.php) Affected products: e107 1.0.2 (older releases have not been tested) Disclosure Timeline: 2013/02/18 vendor contacted via email 2013/02/18 initial response 2013/03/04 proposed fix by vendor 2013/03/08 second proposed fix by vendor 2013/03/13 fix confirmed 2013/03/14 vendor released update 1.0.3 2013/04/03 Public disclosure Credits Simon Bieber (sbie...@tele-consulting.com) Tele-Consulting security networking training GmbH www.tele-consulting.com Disclaimer: All information is provided without warranty. The intent is to provide information to secure infrastructure and/or systems, not to be able to attack or damage. Therefore Tele-Consulting shall not be liable for any direct or indirect damages that might be caused by using this information.