Re: [Full-disclosure] Astaro Security Gateway v8.1 - Input Validation Vulnerability

[Markus Hennig <Markus.Hennig@xxxxxxxxxx>]

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@xxxxxxxxxxx

Thx,
Markus Hennig


Markus Hennig | markus.hennig@xxxxxxxxxx | 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@xxxxxxxxxxxxxxxxx 
[mailto:full-disclosure-bounces@xxxxxxxxxxxxxxxxx] On Behalf Of 
research@xxxxxxxxxxxxxxxxxxxxx
Sent: Freitag, 6. Januar 2012 03:03
To: submissions@xxxxxxxxxxxxxxxxxxxxxxx; full-disclosure@xxxxxxxxxxxxxxxxx
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 
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Lab or its suppliers are not liable in any case of damage, including direct, 
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or incidental damages so the foregoing limitation 
may not apply. Any modified copy or reproduction, including partially usages, 
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Lab. Permission to electronically redistribute this alert in its unmodified 
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other media, are reserved by Vulnerability-Lab or its suppliers.

                                                Copyright © 
2011|Vulnerability-Lab

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