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Zscaler Security Advisories

Security Advisory - September 12, 2023

Zscaler protects against 3 new vulnerabilities for Windows

Zscaler, working with Microsoft through their MAPP program, has proactively deployed protection for the following 3 vulnerabilities included in the September 2023 Microsoft security bulletins. Zscaler will continue to monitor exploits associated with all vulnerabilities in the September release and deploy additional protections, as necessary.

CVE-2023-38144 – Windows Common Log File System Driver Elevation of Privilege Vulnerability

Severity: Important

Affected Software

  • Windows Server 2012 R2 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012
  • Windows Server 2008 R2 for x64based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2008 R2 for x64based Systems Service Pack 1
  • Windows Server 2008 for x64based Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for x64based Systems Service Pack 2
  • Windows Server 2008 for 32bit Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for 32bit Systems Service Pack 2
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2016
  • Windows 10 Version 1607 for x64based Systems
  • Windows 10 Version 1607 for 32bit Systems
  • Windows 10 for x64based Systems
  • Windows 10 for 32bit Systems
  • Windows 10 Version 22H2 for 32bit Systems
  • Windows 10 Version 22H2 for ARM64based Systems
  • Windows 10 Version 22H2 for x64based Systems
  • Windows 11 Version 22H2 for x64based Systems
  • Windows 11 Version 22H2 for ARM64based Systems
  • Windows 10 Version 21H2 for x64based Systems
  • Windows 10 Version 21H2 for ARM64based Systems
  • Windows 10 Version 21H2 for 32bit Systems
  • Windows 11 version 21H2 for ARM64based Systems
  • Windows 11 version 21H2 for x64based Systems
  • Windows Server 2022 (Server Core installation)
  • Windows Server 2022
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2019
  • Windows 10 Version 1809 for ARM64based Systems
  • Windows 10 Version 1809 for x64based Systems
  • Windows 10 Version 1809 for 32bit Systems

CVE-2023-36802 – Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability

Severity: Important

Affected Software

  • Windows 10 Version 22H2 for 32bit Systems
  • Windows 10 Version 22H2 for ARM64based Systems
  • Windows 10 Version 22H2 for x64based Systems
  • Windows 11 Version 22H2 for x64based Systems
  • Windows 11 Version 22H2 for ARM64based Systems
  • Windows 10 Version 21H2 for x64based Systems
  • Windows 10 Version 21H2 for ARM64based Systems
  • Windows 10 Version 21H2 for 32bit Systems
  • Windows 11 version 21H2 for ARM64based Systems
  • Windows 11 version 21H2 for x64based Systems
  • Windows Server 2022 (Server Core installation)
  • Windows Server 2022
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2019
  • Windows 10 Version 1809 for ARM64based Systems
  • Windows 10 Version 1809 for x64based Systems
  • Windows 10 Version 1809 for 32bit Systems

CVE-2023-38143 – Windows Common Log File System Driver Elevation of Privilege Vulnerability

Severity: Important

Affected Software

  • Windows Server 2012 R2 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012
  • Windows Server 2008 R2 for x64based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2008 R2 for x64based Systems Service Pack 1
  • Windows Server 2008 for x64based Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for x64based Systems Service Pack 2
  • Windows Server 2008 for 32bit Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for 32bit Systems Service Pack 2
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2016
  • Windows 10 Version 1607 for x64based Systems
  • Windows 10 Version 1607 for 32bit Systems
  • Windows 10 for x64based Systems
  • Windows 10 for 32bit Systems
  • Windows 10 Version 22H2 for 32bit Systems
  • Windows 10 Version 22H2 for ARM64based Systems
  • Windows 10 Version 22H2 for x64based Systems
  • Windows 11 Version 22H2 for x64based Systems
  • Windows 11 Version 22H2 for ARM64based Systems
  • Windows 10 Version 21H2 for x64based Systems
  • Windows 10 Version 21H2 for ARM64based Systems
  • Windows 10 Version 21H2 for 32bit Systems
  • Windows 11 version 21H2 for ARM64based Systems
  • Windows 11 version 21H2 for x64based Systems
  • Windows Server 2022 (Server Core installation)
  • Windows Server 2022
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2019
  • Windows 10 Version 1809 for ARM64based Systems
  • Windows 10 Version 1809 for x64based Systems
  • Windows 10 Version 1809 for 32bit Systems