Critical Patches Issued for Microsoft Products, June 09, 2020

ITS Advisory Number: 
2020-079-UPDATED
Date(s) Issued: 
Tuesday, June 9, 2020
Date Updated: 
Monday, June 15, 2020
Subject: 
Critical Patches Issued for Microsoft Products, June 09, 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.

 

June 15 - UPDATED THREAT INTELLIGENCE:

These updates also included patches for SMBleed (CVE-2020-1206) and SMBLost (CVE-2020-1301). SMBLost is a remote code execution vulnerability in SMB v1. SMBleed is an information disclosure vulnerability which could allow an attacker to read uninitialized kernel memory. A PoC is also available on Github for chaining SMBleed with SMBGhost (CVE-2020-0796) without authentication to achieve remote code execution. CISA indicated cyber actors are actively targeted unpatched systems with the PoC.

 

Systems Affected: 
  • Microsoft Windows
  • Microsoft Edge (EdgeHTML-based)
  • Microsoft Edge (Chromium-based) in IE Mode
  • Microsoft ChakraCore
  • Internet Explorer
  • Microsoft Office and Microsoft Office Services and Web Apps
  • Windows Defender
  • Microsoft Dynamics
  • Visual Studio
  • Azure DevOps
  • HoloLens
  • Adobe Flash Player
  • Microsoft Apps for Android
  • Windows App Store
  • System Center
  • Android App
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 link below.

 

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 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.