MS14-066: Vulnerability in Schannel Could Allow Remote Code Execution (2992611) (uncredentialed check)

This script is Copyright (C) 2014-2017 Tenable Network Security, Inc.


Synopsis :

The remote Windows host is affected by a remote code execution
vulnerability.

Description :

The remote Windows host is affected by a remote code execution
vulnerability due to improper processing of packets by the Secure
Channel (Schannel) security package. An attacker can exploit this
issue by sending specially crafted packets to a Windows server.

Note that this plugin sends a client Certificate TLS handshake message
followed by a CertificateVerify message. Some Windows hosts will close
the connection upon receiving a client certificate for which it did
not ask for with a CertificateRequest message. In this case, the
plugin cannot proceed to detect the vulnerability as the
CertificateVerify message cannot be sent.

See also :

https://technet.microsoft.com/library/security/ms14-066

Solution :

Microsoft has released a set of patches for Windows 2003, Vista, 2008,
7, 2008 R2, 8, 2012, 8.1, and 2012 R2.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.7
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Windows

Nessus Plugin ID: 79638 ()

Bugtraq ID: 70954

CVE ID: CVE-2014-6321

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