bugtraq - Re: SSL VPNs and security

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Message-ID: <44899F1B.11633.1A9489E@localhost>
Date: Fri, 09 Jun 2006 16:17:31 +0200
From: "Amit Klein (AKsecurity)" <aksecurity@...pop.com>
To: bugtraq@...urityfocus.com, Michal Zalewski <lcamtuf@...ne.ids.pl>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: SSL VPNs and security


On 8 Jun 2006 at 22:48, Michal Zalewski wrote:

> "Web VPN" or "SSL VPN" is a term used to denote methods for accessing
> company's internal applications with a bare WWW browser, with the use of
> browser-based SSO authentication and SSL tunneling. As opposed to IPSec,
> no additional software or configuration is required, and hence, corporate
> users can use pretty much any computer they can put their hands on.


> 
>   - Application cookies set by other applications. If passed to the
>     browser (as some SSL VPNs do), these cookies are separated by the use
>     of "path" parameter alone, which does not necessarily establish a
>     browser security domain boundary. This is equivalent to the attacker
>     obtaining user credentials to these applications.
> 

Yes, the path field (in Set-Cookie) doesn't buy you much, see a detailed discussion in 
"Path Insecurity":
http://www.webappsec.org/lists/websecurity/archive/2006-03/msg00000.html

-Amit

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