Document Title:
===============
Astaro Gateway v8.1 - Input Validation Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=193


Release Date:
=============
2011-12-26


Vulnerability Laboratory ID (VL-ID):
====================================
193


Common Vulnerability Scoring System:
====================================
3.5


Product & Service Introduction:
===============================
Das Astaro Security Gateway 8.101 wurde speziell für den Schutz großer Unternehmen konzipiert. 
Basierend auf hochwertigen Intel-kompatiblen Serversystemen, einschließlich Dual IntelTM Xeon-Multi-Core-Prozessoren 
sowie redundanten Highspeed-Festplatten, bietet es selbst für die herausforderndsten Umgebungen optimale Performance 
und Zuverlässigkeit. Dieser Abschnitt beschreibt detailliert die verfügbaren Sicherheitsanwendungen, technischen 
Einzelheiten und Einsatzszenarien.

(Copy of the Vendor Homepage: https://www.astaro.com/de-de/produkte/hardware-appliance/astaro-security-gateway-625)


Abstract Advisory Information:
==============================
Vulnerability-Lab Team discovered a persistent Cross Site Scripting issue on Astaro Security Gateway.


Vulnerability Disclosure Timeline:
==================================
2011-06-13:	Vendor Notification
2011-06-15:	Vendor Response/Feedback
2011-12-27:	Public or Non-Public Disclosure
2012-01-11:	Vendor Fix/Patch


Discovery Status:
=================
Published


Affected Product(s):
====================
Sophos
Product: Astaro Security Gateway 8.101


Exploitation Technique:
=======================
Local


Severity Level:
===============
Low


Technical Details & Description:
================================
A persistent cross site scripting vulnerability is detected on Astaro Security Gateway v8.101.
The vulnerability allows a local privileged interface user account to implement malicious persistent script code.
The bug is located in the preview function of the certificate delete popup box.

Vulnerable Module(s):
				[+] Certificate - Delete Preview Popup Box

Picture(s):
			../1.png


Proof of Concept (PoC):
=======================
The vulnerability can be exploited by remote attackers with high required user inter action or local high privileged user accounts.
For demonstration or reproduce ...

Site-2-Site VPN - Certificate Management Preview

<div style="left: 300px; top: 220px; z-index: 2000; visibility: visible;" class="iPopUp" id="iPopup_2"><div 
class="iPopUpTitle">Please confirm:</div><div class="iPopUpText"><p>&#8203;&#8203;&#8203;&#8203;&#8203;Are you sure that you want to delete the X509 certificate 
with private key object '>"<INCLUDED PERSISTENT SCRIPTCODE HERE!!!">'?</p></iframe></p></div><table border="0" 
cellpadding="0" cellspacing="0"><tbody><tr><td style="padding: 2px;"><div id="btnDefault_iPopup_2" class="button" style="width: 
auto; cursor: pointer; color: black; font-weight: bold;"><div class="button_left"></div><div class="button_center" style="width: 
auto;"><span style="font-weight: normal;">OK</span></div><div class="button_right"></div></div></td>&#8203;&#8203;&#8203;&#8203;&#8203;<td style="padding: 
2px;"><div class="button" style="width: auto; cursor: pointer; color: black;"><div class="button_left"></div><div 
class="button_center" style="width: auto;"><span style="font-weight: normal;">Cancel</span></div><div 
class="button_right"></div></div></td></tr></tbody></table></div>

	../index.dat


Solution - Fix & Patch:
=======================
Update to Application Version 8.301 - Astaro
Provided Information by Mr. Markus Hennig (Markus.Hennig@sophos.com)  [2012-01-10]
Reference: FULL DISCLOSURE MAILINGLIST  &  SECUNIA


Security Risk:
==============
The security risk of the persistent cross site scripting vulnerability is estimated as medium(-).


Credits & Authors:
==================
Vulnerability Research Laboratory - N/A  Anonymous


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=========================
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