Watchguard Server Center v11.7.4 Multiple Non-Persistent Cross-Site
Scripting Vulnerabilities

RCE Security Advisory
http://www.rcesecurity.com


1. ADVISORY INFORMATION
-----------------------
Product:        Watchguard Server Center
Vendor URL:     www.watchguard.com
Type:           Cross-Site Scripting [CWE-79]
Date found:     2013-09-11
Date published: 2013-10-21
CVSSv2 Score:   3,5 (AV:N/AC:M/Au:S/C:N/I:P/A:N))
CVE:            CVE-2013-5702


2. CREDITS
----------
These vulnerabilities were discovered and researched by Julien Ahrens
from RCE Security.


3. VERSIONS AFFECTED
--------------------
Watchguard Server Center v11.7.4 Update #1
and other older versions may be affected too.


4. VULNERABILITY DESCRIPTION
----------------------------
Multiple Non-Persistent Cross-Site Scripting vulnerabilities have been
identified in the Watchguard Server Center v11.7.4 Update #1.

Due to improper input - validation of the following GET parameters, an
attacker could temporarily inject arbitrary code with required
authenticated user interaction into the context of the Watchguard Server
Center / current browser session. Successful exploitation of these
vulnerabilities allows for example cookie theft, session hijacking or
client side context manipulation.

Vulnerable modules and parameters:
+/log/device?sn=random&cluster_id=<XSS>&l_t=tr&name=random
+/log/device?sn=random&cluster_id=random&l_t=tr&name=<XSS>
+/log/log_html_distribution?sn=random&cluster_id=random&name=<XSS>


5. PROOF-OF-CONCEPT (CODE / EXPLOIT)
------------------------------------
https://192.168.0.1:4130/log/device?sn=random&cluster_id=&l_t=tr&name=<script>alert('rcesecurity.com')</script>


6. SOLUTION
-----------
Update to Watchguard Server Center v11.8 which fixes these issues


7. REPORT TIMELINE
------------------
2013-09-05: Discovery of the vulnerability
2013-09-05: MITRE assigns CVE-2013-5702 for this issue
2013-09-11: RCE Security sends vulnerability details to Watchguard via mail
            with disclosure date set to 26. September 2013
2013-09-12: Watchguard ACKs all reported flaws, assigns bug ids: #76179 and
            #76363 and shows possible mitigation factors
2013-09-26: RCE Security provides a PoC bypassing the mitigation factors and
            extends disclosure date to 17. October 2013
2013-09-30: RCE Security asks for status update
2013-10-10: Watchguard releases v11.8 which fixes all reported
            vulnerabilities
2013-10-21: Responsible Disclosure


8. REFERENCES
-------------
http://www.rcesecurity.com/2013/10/cve-2013-5702-watchguard-server-center-v11-7-4-multiple-xss-vulnerabilities/
http://watchguardsecuritycenter.com/2013/10/17/xtm-11-8-secfixes/