MS KB3155527: Update to Cipher Suites for FalseStart

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

The remote Windows host is affected by a cipher downgrade
vulnerability.

Description :

The remote Windows host is affected by a cipher downgrade
vulnerability in FalseStart due to allowing TLS clients to send
application data before receiving and verifying the server 'Finished'
message. A man-in-the-middle attacker can exploit this to force a TLS
client to encrypt the first flight of application_data records using
an attacker's chosen cipher suite from the client's list.

See also :

https://technet.microsoft.com/en-us/library/security/3155527

Solution :

Microsoft has released a set of patches for Windows 2012, 8.1,
2012 R2, and 10.

Risk factor :

Medium / CVSS Base Score : 5.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N)

Family: Windows

Nessus Plugin ID: 91045 ()

Bugtraq ID:

CVE ID:

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