MS KB3123479: Deprecation of SHA-1 Hashing Algorithm for Microsoft Root Certificate Program

medium Nessus Plugin ID 87875


The remote Windows host is missing an update that improves cryptography and digital certificate handling.


The remote Windows host is missing Microsoft KB3123479, an update that restricts the use of certificates with SHA1 hashes, this restriction being limited to certificates issued under roots in the Microsoft root certificate program. This update increases the difficulty of carrying out some spoofing, phishing, and man-in-the-middle attacks.


Microsoft has released a set of patches for Windows 7, 2008 R2, 8, 2012, 8.1, 2012 R2, and 10.

See Also

Plugin Details

Severity: Medium

ID: 87875

File Name: smb_kb3097617.nasl

Version: 1.11

Type: local

Agent: windows

Family: Windows

Published: 1/12/2016

Updated: 6/3/2021

Supported Sensors: Nessus Agent

Risk Information

CVSS Score Rationale: No cve available. score based on analysis of the vendor advisory.


Risk Factor: Medium

Base Score: 4

Vector: AV:N/AC:H/Au:N/C:P/I:P/A:N

CVSS Score Source: manual


Risk Factor: Medium

Base Score: 4.8

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

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/Registry/Enumerated, SMB/WindowsVersion

Patch Publication Date: 1/12/2016

Vulnerability Publication Date: 1/12/2016

Reference Information

IAVB: 2016-B-0018-S

MSKB: 3123479