Critical Patches Issued for Microsoft Products, October 13, 2020

ITS Advisory Number: 
2020-138 - UPDATED
Date(s) Issued: 
Tuesday, October 13, 2020
Date Updated: 
Monday, October 19, 2020
Subject: 
Critical Patches Issued for Microsoft Products, October 13, 2020
Overview: 

Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

 

ORIGINAL THREAT INTELLIGENCE:

There are no reports of these vulnerabilities being exploited in the wild.

 

October 19 - UPDATED THREAT INTELLIGENCE:

A publicly available Proof-of-Concept has been publish by Adam Zabrocki for CVE-2020-16898 which enables for remote code executable on Window's TCP/IP stack. This proof of concept is exclusive to IPv6 traffic.

 

Systems Affected: 
  • Microsoft Windows
  • Microsoft Office and Microsoft Office Services and Web Apps
  • Microsoft JET Database Engine
  • Azure Functions
  • Azure Sphere
  • Open Source Software
  • Microsoft Exchange Server
  • Visual Studio
  • PowerShellGet
  • Microsoft .NET Framework
  • Microsoft Dynamics
  • Adobe Flash Player
  • Microsoft Windows Codecs Library
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
Medium
BUSINESS
Large and medium business entities: 
High
Small business entities: 
Medium
Home Users: 
Low
Description: 

Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution.

 

A full list of all vulnerabilities can be found at the links provided in the references portion of this advisory.

Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.

Actions: 
  • After appropriate testing, immediately apply the patches or mitigations provided by Microsoft to vulnerable systems
  • Run all software as a non-privileged user (one without administrative rights) to diminish the effects of a successful attack.
  • Remind all users not to visit untrusted websites or follow links provided by unknown or untrusted sources.
  • Inform and educate users regarding threats posed by hypertext links contained in emails or attachments especially from untrusted sources.
  • Apply the Principle of Least Privilege to all systems and services.