Critical Patches Issued for Microsoft Products

Critical Patches Issued for Microsoft Products

A cybersecurity advisory was issued today, Jan. 14, 2020, regarding critical patches that are now available for Microsoft products. Multiple vulnerabilities in Microsoft products could allow for remote code execution, which could potentially lead to the loss or theft of data. These patches address the vulnerabilities that have been found to prevent a potential breach.

What It Is:
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.

Read the original Microsoft references below for more information:

Security Update Guide
Security Update Summary

Threat Intelligence:
Critical vulnerability CVE-2020-0601 included in this rollup addresses a certificate validation vulnerability in the cryptographic library crypt32.dll that could allow for remote code execution.

Systems Affected:

• .NET Core 3.0, 3.1
• ASP.NET Core 2.1, 3.0, 3.1
• Dynamics 365 Field Service
• Internet Explorer 10, 11, 9
• Microsoft .NET Framework 3.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8
• Microsoft Excel 2010, 2013, 2013 RT, 2016
• Microsoft Office 2010, 2013, 2016, 2019
• Office 365
• Office Online Server
• One Drive for Android
• Windows 10, 7, 8.1
• Windows RT 8.1
• Windows Server 2008 R2, 2008, 2012, 2012 R2, 2016, 2019
• Windows Server, version 1803, 1903, 1909

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

What It Means:
If you and/or your business utilize the Microsoft products mentioned above, you will need to apply the appropriate patches or appropriate mitigations provided by Microsoft to vulnerable systems following proper testing.

Technical Summary:
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 here.

What To Do:
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.

Negative Consequences of Lost or Stolen Data:
The loss or theft of proprietary data can have severe impacts, particularly if the compromise becomes public and sensitive information is exposed. Possible impacts include:

• Temporary or permanent loss of sensitive or proprietary information.
• Disruption to regular operations.
• Financial losses incurred to restore systems and files.
• Potential harm to an organization’s reputation.

Should your agency or business need assistance with issues arising from vulnerabilities in Microsoft products including updates and/or patches, Dox can help. Please contact Dox if there is anything we can do to assist in securing your agency, business, or organization.

Thank you for your time and stay safe online.