Junglewise Threat Intelligence

CVE-2022-37969: Microsoft Windows Common Log File System (CLFS) Driver Privilege Escalation Vulnerability

CVE-2022-37969 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-09-14

Technologies: Microsoft Windows Server 2008, Microsoft Windows 11, Microsoft Windows, Microsoft Windows 10, Microsoft Windows 8.1, Microsoft Windows Server 2019, Microsoft Windows Server 2016, Microsoft Windows 7, Microsoft Windows Server 2022, Microsoft Windows Server 2012. Vendors: Microsoft.

Executive brief

An out-of-bounds write vulnerability in the Microsoft Windows Common Log File System (CLFS) driver allows a local attacker to gain SYSTEM privileges. The flaw exists in how the driver handles objects in memory, leading to an elevation of privilege.

Affected products

  • Microsoft Windows 10 versions up to (excluding) 10.0.10240.19444
  • Microsoft Windows 11 versions up to (excluding) 10.0.22000.978
  • Microsoft Windows Server 2022 versions up to (excluding) 10.0.20348.1006
  • Microsoft Windows 7 SP1
  • Microsoft Windows 8.1
  • Microsoft Windows Server 2008 SP2, R2 SP1
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2019

Timeline

  • 2022-09-14: disclosed
  • 2022-09-14: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-09-14: patched: Microsoft released security updates to address this vulnerability.

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