Microsoft Patch Tuesday – 11/8/22

Fortify Security Team
Nov 8, 2022

Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote 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: Six zero-day vulnerabilities addressed in this advisory were reported by Microsoft as currently being exploited in the wild.

  • CVE-2022-41128 (Windows Scripting Languages Remote Code Execution)
  • CVE-2022-41091 (Windows Mark of the Web Security Feature Bypass Vulnerability)
  • CVE-2022-41073 (Windows Print Spooler Elevation of Privilege Vulnerability)
  • CVE-2022-41125 (Windows CNG Key Isolation Service Elevation of Privilege Vulnerability)
  • CVE-2022-41040 (Microsoft Exchange Server Elevation of Privilege)
  • CVE-2022-41082 (Microsoft Exchange Server Remote Code Execution Vulnerability)

SYSTEMS AFFECTED:

  • .NET Framework
  • AMD CPU Branch
  • Azure
  • Azure Real Time Operating System
  • Linux Kernel
  • Microsoft Dynamics
  • Microsoft Exchange Server
  • Microsoft Graphics Component
  • Microsoft Office
  • Microsoft Office Excel
  • Microsoft Office SharePoint
  • Microsoft Office Word
  • Network Policy Server (NPS)
  • Open Source Software
  • Role: Windows Hyper-V
  • SysInternals
  • Visual Studio
  • Windows Advanced Local Procedure Call
  • Windows ALPC
  • Windows Bind Filter Driver
  • Windows BitLocker
  • Windows CNG Key Isolation Service
  • Windows Devices Human Interface
  • Windows Digital Media
  • Windows DWM Core Library
  • Windows Extensible File Allocation
  • Windows Group Policy Preference Client
  • Windows HTTP.sys
  • Windows Kerberos
  • Windows Mark of the Web (MOTW)
  • Windows Netlogon
  • Windows Network Address Translation (NAT)
  • Windows ODBC Driver
  • Windows Overlay Filter
  • Windows Point-to-Point Tunneling Protocol
  • Windows Print Spooler Components
  • Windows Resilient File System (ReFS)
  • Windows Scripting
  • Windows Win32K

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 remote code execution.

A full list of all vulnerabilities can be found at the link below:

https://learn.cisecurity.org/e/799323/update-guide/47xtl1/565334712?h=ScVl1ZxVlChNYywTMZJbshYjdopsMlWP8iDq_jbBmHE

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. (M1051: Update Software)
    • Safeguard 7.1: Establish and Maintain a Vulnerability Management Process: Establish and maintain a documented vulnerability management process for enterprise assets. Review and update documentation annually, or when significant enterprise changes occur that could impact this Safeguard.
    • Safeguard 7.4: Perform Automated Application Patch Management: Perform application updates on enterprise assets through automated patch management on a monthly, or more frequent, basis.
  • Apply the Principle of Least Privilege to all systems and services, and run all software as a non-privileged user (one without administrative rights) to diminish the effects of a successful attack. (M1026: Privileged Account Management)
    • Safeguard 4.7: Manage Default Accounts on Enterprise Assets and Software: Manage default accounts on enterprise assets and software, such as root, administrator, and other pre-configured vendor accounts. Example implementations can include: disabling default accounts or making them unusable.
    • Safeguard 5.4: Restrict Administrator Privileges to Dedicated Administrator Accounts: Restrict administrator privileges to dedicated administrator accounts on enterprise assets. Conduct general computing activities, such as internet browsing, email, and productivity suite use, from the user’s primary, non-privileged account.
  • Remind all users not to visit untrusted websites or follow links/open files provided by unknown or untrusted sources. (M1017: User Training)
    • Safeguard 14.1: Establish and Maintain a Security Awareness Program: Establish and maintain a security awareness program. The purpose of a security awareness program is to educate the enterprise’s workforce on how to interact with enterprise assets and data in a secure manner. Conduct training at hire and, at a minimum, annually. Review and update content annually, or when significant enterprise changes occur that could impact this Safeguard.
    • Safeguard 14.2: Train Workforce Members to Recognize Social Engineering Attacks: Train workforce members to recognize social engineering attacks, such as phishing, pre-texting, and tailgating.
  • Use capabilities to prevent suspicious behavior patterns from occurring on endpoint systems. This could include suspicious process, file, API call, etc. behavior. (M1040 : Behavior Prevention on Endpoint)
    • Safeguard 13.2 : Deploy a Host-Based Intrusion Detection Solution: Deploy a host-based intrusion detection solution on enterprise assets, where appropriate and/or supported.
    • Safeguard 13.7 : Deploy a Host-Based Intrusion Prevention Solution: Deploy a host-based intrusion prevention solution on enterprise assets, where appropriate and/or supported. Example implementations include use of an Endpoint Detection and Response (EDR) client or host-based IPS agent.

REFERENCES:

Microsoft:
https://msrc.microsoft.com/update-guide/
https://msrc.microsoft.com/update-guide/releaseNote/2022-Nov

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