Windows Remote Desktop Protocol Private Key Disclosure - Secunia Advisories - Vulnerability Intelligence

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Windows Remote Desktop Protocol Private Key Disclosure
Secunia Advisory:	SA15605	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2005-06-06
Popularity:	24,168 views

Critical:	Less critical
Impact:	Hijacking
Where:	From remote
Solution Status:	Unpatched

OS:	Microsoft Windows 2000 Advanced Server Microsoft Windows 2000 Datacenter Server Microsoft Windows 2000 Server Microsoft Windows Server 2003 Datacenter Edition Microsoft Windows Server 2003 Enterprise Edition Microsoft Windows Server 2003 Standard Edition Microsoft Windows Server 2003 Web Edition Microsoft Windows XP Home Edition Microsoft Windows XP Professional

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Description: Massimiliano Montoro has reported a security issue in Microsoft Windows, which can be exploited by malicious people to conduct MitM (Man-in-the-Middle) attacks. The problem is that the private key used for signing a terminal server's public key is hard-coded into the mstlsapi.dll library. This can be exploited to calculate a valid signature, which can be used for performing MitM attacks. Successful exploitation requires that a malicious person is able to intercept traffic between the terminal client and terminal server. NOTE: Functionality for exploiting this has reportedly been included in Cain & Abel 2.7. Solution: Connect only to terminal services over trusted networks. Provided and/or discovered by: Massimiliano Montoro Original Advisory: Massimiliano Montoro: http://www.oxid.it/downloads/rdp-gbu.pdf

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