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MS16-100: Security Update for Secure Boot (3179577)

medium Nessus Plugin ID 92822

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Synopsis

The remote Windows host is affected by a security bypass vulnerability.

Description

The remote Windows host is missing a security update. It is, therefore, affected by a security bypass vulnerability in Secure Boot due to improper handling of malicious boot managers. An attacker with administrative privileges can exploit this vulnerability to bypass code integrity checks and load test-signed executables and drivers.

Solution

Microsoft has released a set of patches for Windows 2012, 8.1, RT 8.1, 2012 R2, and 10. Alternatively, as a workaround, configure BitLocker to use Trusted Platform Module (TPM)+PIN protection or disable Secure Boot integrity protection of BitLocker per the vendor advisory.

See Also

https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-100

Plugin Details

Severity: Medium

ID: 92822

File Name: smb_nt_ms16-100.nasl

Version: 1.10

Type: local

Agent: windows

Published: 8/9/2016

Updated: 11/14/2019

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2016-3320

CVSS v3

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 4.3

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

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

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 8/9/2016

Vulnerability Publication Date: 8/9/2016

Reference Information

CVE: CVE-2016-3320

BID: 92304

IAVB: 2016-B-0122

MSFT: MS16-100

MSKB: 3172729