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Cisco WebVPN Cross-Site Scripting Vulnerability
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Secunia Advisory:
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SA20644
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Release Date:
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2006-06-14
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Last Update:
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2006-06-20
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Popularity:
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7,797 views
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Critical:
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Less critical
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Impact:
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Cross Site Scripting
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Where:
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From remote
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Solution Status:
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Unpatched
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| OS: | Cisco Adaptive Security Appliance (ASA) 7.x
Cisco VPN 3000 Concentrator
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| CVE reference: | CVE-2006-3073
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Description:
A vulnerability has been reported in Cisco WebVPN, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input passed in the URL isn't properly sanitised before being returned to the user in the "dnserror.html" and the "connecterror.html" pages. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
Successful exploitation requires that clientless mode of the WebVPN feature is enabled.
The vulnerability has been reported in the following products:
* Cisco VPN 3000 Series Concentrators
* Cisco ASA 5500 Series Adaptive Security Appliances (ASA).
Solution:
Filter malicious characters and character sequences in a proxy or firewall with URL filtering capabilities.
Provided and/or discovered by:
The vendor credits Michal Zalewski and two other users.
Changelog:
2006-06-20: Added CVE reference.
Original Advisory:
http://lists.grok.org.uk/pipermail/full-disclosure/2006-June/046708.html
Cisco:
http://www.cisco.com/warp/public/707/cisco-sr-20060613-webvpn-xss.shtml
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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