bugtraq - RE: Cisco Clean Access Agent (Perfigo) bypass

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Date: Sun, 21 Aug 2005 09:57:14 -0400
From: "Dario Ciccarone (dciccaro)" <dciccaro@...co.com>
To: <llhansen-bugtraq@...ms.edu>, <bugtraq@...urityfocus.com>
Subject: RE: Cisco Clean Access Agent (Perfigo) bypass

 
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Hi there,

	This post is to confirm that the Cisco Systems PSIRT is actively
researching into this issue. We will be providing a more thorough answer
on Monday, August 22, 2005.

	Attached: a cleartext, PGP signed version of this same email.

	Thanks,
	Dario

Quidquid latine dictum sit, altum viditur

Dario Ciccarone
CCIE #10395 
Product Security Incident Response Team (PSIRT)
Cisco Systems, Inc.
dciccaro@...co.com
 

> -----Original Message-----
> From: llhansen-bugtraq@...ms.edu [mailto:llhansen-bugtraq@...ms.edu] 
> Sent: Friday, August 19, 2005 12:30 PM
> To: bugtraq@...urityfocus.com
> Subject: Cisco Clean Access Agent (Perfigo) bypass
> 
> Description: 
> Cisco Clean Access is an easily deployed software solution 
> that can automatically detect, isolate, and clean infected or 
> vulnerable devices that attempt to access your network. It 
> identifies whether networked devices such as laptops, 
> personal digital assistants, even game consoles are compliant 
> with your network's security policies and repairs any 
> vulnerabilities before permitting access to the network. 
> 
> Vendor site:
> http://www.cisco.com/en/US/products/ps6128/
> 
> Affected versions: 
> This works in at least 3.5.3.1 and 3.5.4.
> 
> Discovery Date: 
> 2005-08-12
> 
> Report Date: 
> 2005-08-19
> 
> Severity:
> Medium
> 
> Vulnerability: 
> End users can bypass the "mandatory" installation of the 
> Clean Access Agent by changing the User-Agent string of their 
> browser. This allows them to connect to the network without 
> the host-based checks being run. If configured, remote checks 
> are still run.
> 
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