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

high Nessus Plugin ID 79638

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.

Solution

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

See Also

http://www.nessus.org/u?64e97902

Plugin Details

Severity: High

ID: 79638

File Name: ms14-066.nbin

Version: 1.210

Type: remote

Agent: windows

Family: Windows

Published: 12/1/2014

Updated: 3/19/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2014-6321

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SSL/Supported

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/11/2014

Vulnerability Publication Date: 11/11/2014

Exploitable With

Core Impact

Reference Information

CVE: CVE-2014-6321

BID: 70954

CERT: 505120

MSFT: MS14-066

MSKB: 2992611