x
Limited Time Offer: Save up to 20% on a new CIS SecureSuite Membership | Learn more
×
Why CIS Solutions Join CIS Resources
CIS WorkBench Sign-in CIS WorkBench Sign In CIS Hardened Images CIS Hardened Images Support CIS Support


Why CIS

Who We Are

CIS is an independent, nonprofit organization with a mission to create confidence in the connected world



About Us Leadership Principles Testimonials

Solutions

secure your organization
Secure Your Organization


secure specific platforms
Secure Specific Platforms


cis securesuite CIS SecureSuite® Learn More      Apply Now  
u s state local tribal and territorial governments
U.S. State, Local, Tribal & Territorial Governments


View All Products & Services  

Join CIS

Get Involved

Join CIS as a member, partner, or volunteer - or explore our career opportunities



CIS SecureSuite® Membership Multi-State ISAC (MS-ISAC®) Elections Infrastructure ISAC (EI-ISAC®) CIS CyberMarket® Vendors CIS Communities Careers

Resources

resources
Resources


learn
Learn


filter by topic
Filter by Topic


View All Resources  
CIS Logo Show Search Expand Menu

Critical Patches Issued for Microsoft Products, August 10, 2021

MS-ISAC ADVISORY NUMBER:

2021-102

DATE(S) ISSUED:

08/10/2021

OVERVIEW:

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

THREAT INTELLIGENCE:

There are currently no reports of this vulnerability being exploited in the wild.

SYSTEMS AFFECTED:

  • .NET Core & Visual Studio
  • ASP .NET
  • Azure
  • Azure Sphere
  • Microsoft Azure Active Directory Connect
  • Microsoft Dynamics
  • Microsoft Graphics Component
  • Microsoft Office
  • Microsoft Office SharePoint
  • Microsoft Office Word
  • Microsoft Scripting Engine
  • Microsoft Windows Codecs Library
  • Remote Desktop Client
  • Windows Bluetooth Service
  • Windows Cryptographic Services
  • Windows Defender
  • Windows Event Tracing
  • Windows Media
  • Windows MSHTML Platform
  • Windows NTLM
  • Windows Print Spooler Components
  • Windows Services for NFS ONCRPC XDR Driver
  • Windows Storage Spaces Controller
  • Windows TCP/IP
  • Windows Update
  • Windows Update Assistant
  • Windows User Profile Service
RISK: Government:
  • Large and medium government entities: HIGH
  • Small government entities: MEDIUM
Businesses:
  • Large and medium business entities: HIGH
  • Small business entities: MEDIUM
Home Users: LOW

TECHNICAL SUMMARY:

Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for arbitrary code execution. A full list of all vulnerabilities can be found at the link below: https://msrc.microsoft.com/update-guide 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.

RECOMMENDATIONS:

We recommend the following actions be taken:
  • Apply appropriate patches or appropriate mitigations provided by Microsoft to vulnerable systems immediately after appropriate testing.
  • 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.

REFERENCES:

Microsoft: https://msrc.microsoft.com/update-guide https://msrc.microsoft.com/update-guide/releaseNote/2021-Aug  

Get Email Updates When Cyber Threats Like This Arise

Arrow Subscribe to Advisories

Information Hub : Advisories


CONTROL: 1 --- ADVISORY CONTROL: 0
CONTROL: 2 --- ADVISORY CONTROL: 0
CONTROL: 3 --- ADVISORY CONTROL: 0
CONTROL: 4 --- ADVISORY CONTROL: 0