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NETGEAR ProSafe SSL VPN Concentrator Input Validation Hole Permits Cross-Site Scripting Attacks
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SecurityTracker Alert ID: 1018817 |
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SecurityTracker URL: http://securitytracker.com/id/1018817
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CVE Reference:
CVE-2007-5562
(Links to External Site)
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Updated: Mar 19 2008
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Original Entry Date: Oct 15 2007
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Impact:
Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
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Exploit Included: Yes
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Version(s): SSL312
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Description:
A vulnerability was reported in the NETGEAR ProSafe SSL VPN Concentrator 25. A remote user can conduct cross-site scripting attacks.
The web interface does not properly filter HTML code from user-supplied input before displaying the input. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the NETGEAR Router software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
The vendor was notified on October 9, 2007.
A demonstration exploit request is provided:
/cgi-bin/welcome/XYZ?err=<script>alert('XSS');</script>"
SkyOut reported this vulnerability.
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Impact:
A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the NETGEAR Router software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
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Solution:
No solution was available at the time of this entry.
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Vendor URL: www.netgear.com/ (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
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Message History:
None.
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Source Message Contents
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Date: Sat, 13 Oct 2007 23:20:55 +0200
Subject: [Full-disclosure] Netgear SSL312 XSS vulnerability
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-----------------------------
|| WWW.SMASH-THE-STACK.NET ||
-----------------------------
|| ADVISORY: NETGEAR SSL312 XSS VULNERABILITY
_____________________
|| 0x00: ABOUT ME
|| 0x01: DATELINE
|| 0x02: INFORMATION
|| 0x03: EXPLOITATION
|| 0x04: RISK LEVEL
____________________________________________________________
____________________________________________________________
_________________
|| 0x00: ABOUT ME
Author: SkyOut
Date: October 2007
Contact: skyout[-at-]smash-the-stack[-dot-]net
Website: www.smash-the-stack.net
_________________
|| 0x01: DATELINE
2007-10-08: Bug found
2007-10-09: Phone call with Netgear Germany
2007-10-09: Email with notification sent to Netgear Germany
2007-10-12: Still no reaction from Netgear Germany
2007-10-13: Advisory released
____________________
|| 0x02: INFORMATION
In the product "Netgear SSL312 PROSAFE SSL VPN-Concentrator 25",
which is a VPN router for smaller to medium business companies and
priced about 400 Euro, a bug occurs in the login page due to the
fact of an unfiltered variable. It is possible to execute JavaScript
code on the webinterface. It may be possible, that other products
of this series are vulnerable to this bug, too (not tested!).
_____________________
|| 0x03: EXPLOITATION
To exploit this bug no exploit is needed, all can be done trough
the webinterface of the router in five simple steps:
STEP 1:
Go to the webinterface of the router, located at "/cgi-bin/welcome"
by default.
STEP 2:
Wihout giving any further parameters click LOGIN.
STEP 3:
An error page will occurr with a variable (default is "err") in the
URL. Example: "/cgi-bin/welcome/XYZ?err="
STEP 4:
Manipulate the URL and put your script code into the variable.
Demo: "/cgi-bin/welcome/XYZ?err=<script>alert('XSS');</script>"
STEP 5:
Click ENTER and the demo popup will show up. The script code has been
successfully executed.
___________________
|| 0x04: RISK LEVEL
I would consider this a smaller bug, that can only be used in very
specific situations. A successfull exploitation of this bug could
lead to Session Hijacking.
<!> Happy Hacking <!>
____________________________________________________________
____________________________________________________________
THE END
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
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