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: $Revision: 1.8 $

Type: local

Agent: windows

Family: Windows

Published: 2016/01/12

Modified: 2017/11/21

Dependencies: 93962, 13855

Risk Information

Risk Factor: Medium


Base Score: 4

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


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: 2016/01/12

Vulnerability Publication Date: 2016/01/12

Reference Information

IAVB: 2016-B-0018

MSKB: 3123479