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MS15-031 - Important: Vulnerability in Schannel Could Allow Security Feature Bypass...

By Guest Microsoft Security
March 10, 2015 in Microsoft Support & Discussions

https://freepchelp.forum/topic/203584-ms15-031-important-vulnerability-in-schannel-could-allow-security-feature-bypass/

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Guest Microsoft Security

Posted March 10, 2015

Severity Rating: Important

Revision Note: V1.0 (March 10, 2015): Bulletin published.

Summary: This security update resolves a vulnerability in Microsoft Windows that facilitates exploitation of the publicly disclosed FREAK technique, an industry-wide issue that is not specific to Windows operating systems. The vulnerability could allow a man-in-the-middle (MiTM) attacker to force the downgrading of the key length of an RSA key to EXPORT-grade length in a TLS connection. Any Windows system using Schannel to connect to a remote TLS server with an exploitable cipher suite is affected.