169 Citrix NFuse prior 1.6 launch.asp getLastError() Cross Site Scripting CGI 2004/09/08 Marc Ruef marc dot ruef at computec dot ch http://www.computec.ch computec.ch Marc Ruef marc dot ruef at computec dot ch http://www.computec.ch computec.ch 2004/11/14 2.0 Corrected the plugin structure and added the accuracy values in 1.1. Improved the pattern matching and introduced the plugin changelog in 2.0 tcp 80 open|send GET /launch.asp?NFuse_Application=>atk HTTP/1.0\n\n|sleep|close|pattern_exists HTTP/#.# ### ** 99 Check is inspired by the Nessus plugin. Eric Detoisien eric dot detoisien at global-secure dot fr http://www.global-secure.fr Global Secure 2002/03/27 http://www.securityfocus.com/archive/1/264399 Citrix NFuse 1.51 and 1.6 Citrix NFuse newer than 1.6 Cross Site Scripting The remote host is running a Citrix NFuse Server prior 1.6. There is a bug in getLastError() which makes it vulnerable to cross site scripting attacks. An attacker may use this bug to run arbitrary web code in the context of the web site. You should install or upgrade the software to the latest version. See http://www.citrix.com for more details. Change the default directory of the affected suite to make it harder to run pre-defined and automated attacks against the vulnerability. A solution named Appgate is able to secure Citrix NFuse and MetaFrame. See http://www.appgate.com/knowledge_center/2_White_Papers_and_Other_Documentation/Gerald_Matt_GSEC.pdf for more details. Also limit unwanted connections and communications with firewalling if possible. Approx. 1 hour Yes http://www.securityfocus.com/bid/4372/exploit/ Yes Yes Medium 7 8 7 7 Medium High Risk Nessus is able to do the same check. The possibilities of exploiting this kind of vulnerabilities is well-known and well documented. 2002-0504 4372 9257 http://www.securiteam.com/securitynews/5XP061F4UE.html 14626 8659 Hacking Exposed: Network Security Secrets & Solutions, Stuart McClure, Joel Scambray and George Kurtz, February 25, 2003, 4th Edition, McGraw-Hill Osborne Media, ISBN 0072227427 http://archives.neohapsis.com/archives/bugtraq/2002-03/0334.html