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SChannel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 lacks the required extended master-secret binding support to ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation, which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a "triple handshake attack," aka "Schannel TLS Triple Handshake Vulnerability."

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Microsoft Windows Schannel TLS三次握手漏洞

Microsoft Windows是美国微软（Microsoft）公司发布的一系列操作系统。Microsoft Schannel（全称Secure Channel，安全通道）是其中的一个安全支持提供程序（SSP），它可实现安全套接字层（SSL）和传输层安全（TLS） Internet标准身份验证协议，并提供身份验证服务以便在客户端和服务器之间提供安全的通信。 Microsoft Windows的Schannel中存在欺骗漏洞，该漏洞源于TLS协议的支持版本中存在缺陷。攻击者可利用该漏洞实施中间人攻击，在任

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