Re: Astaro Security Gateway v8.1 - Input Validation Vulnerability

[Markus Hennig <Markus.Hennig () Sophos com>]

Hi all,

Astaro hereby confirms the described vulnerability.

In spite of the text below it is not remote exploitable, but needs a valid administration account to access the web 
configuration interface called "WebAdmin".
Within WebAdmin a privilege escalation is the worst case scenario which can happen. The user with higher privileges has 
to open a preview window of a XSS manipulated object.

Because every  access and all object modifications are logged with username and IP and because the issue is not remote 
exploitable we will fix it within the regular Up2Date schedule with release of version 8.301.

I apologize for the late reaction due to missing reproduction information.
Please don't hesitate to contact us under cert () astaro com.

Thx,
Markus Hennig


Markus Hennig | markus.hennig () sophos com | CTO, Network Security
www.astaro.com | www.sophos.com
Amalienbadstr. 41/Bau 52 | 76227 Karlsruhe | Germany
Phone +49-721-255-160 | Fax -200 

OpenPGP Fingerprint  on http://pgp.mit.edu:11371/ EFC1 436B E930 14C1 60B1 B795 CD7C A519 8193 1A44

Astaro GmbH & Co. KG - a Sophos company, Commercial Register: Mannheim HRA 702710
Headquarter Location: Karlsruhe, Represented by the General Partner Astaro Verwaltungs GmbH
Commercial Register: Mannheim HRB 708248
Executive Board: Gert Hansen, Markus Hennig, Jan Hichert, Günter Junk, Dr. Frank Nellissen


Free Home Use Firewall - a fully equipped software version of the Astaro Security Gateway, available at no cost for 
home users - no strings attached
http://www.astaro.com/landingpages/en-worldwide-homeuse



 
 


-----Original Message-----
From: full-disclosure-bounces () lists grok org uk [mailto:full-disclosure-bounces () lists grok org uk] On Behalf Of 
research () vulnerability-lab com
Sent: Freitag, 6. Januar 2012 03:03
To: submissions () packetstormsecurity org; full-disclosure () lists grok org uk
Subject: [Full-disclosure] Astaro Security Gateway v8.1 - Input Validation Vulnerability

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


Date:
=====
2011-12-2


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


VL-ID:
=====
193


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


Report-Timeline:
================
2011-12-27:     Public or Non-Public Disclosure


Status:
========
Published


Affected Products:
==================
Astaro Security Gateway v8.1


Exploitation-Technique:
=======================
Remote


Severity:
=========
Medium


Details:
========
A persistent cross site scripting vulnerability is detected on Astaro Security Gateway v8.101.
The vulnerability allows an privileged 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

Pictures:
                        ../1.png


Proof of Concept:
=================
The vulnerability can be exploited by remote attackers or privileged restricted 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


Risk:
=====
The security risk of the persistent vulnerability is estimated as medium.


Credits:
========
Vulnerability Research Laboratory


Disclaimer:
===========
The information provided in this advisory is provided as it is without any warranty. Vulnerability-Lab disclaims all 
warranties, 
either expressed or implied, including the warranties of merchantability and capability for a particular purpose. 
Vulnerability-
Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss 
of business 
profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such 
damages. Some 
states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing 
limitation 
may not apply. Any modified copy or reproduction, including partially usages, of this file requires authorization from 
Vulnerability-
Lab. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, 
including the use of 
other media, are reserved by Vulnerability-Lab or its suppliers.

                                                Copyright © 2011|Vulnerability-Lab

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