Junglewise Threat Intelligence

CVE-2022-24521: Microsoft Windows CLFS Driver Privilege Escalation Vulnerability

CVE-2022-24521 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-04-13

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

Executive brief

The Microsoft Windows Common Log File System (CLFS) Driver contains an elevation of privilege vulnerability, likely due to an out-of-bounds write. An attacker who successfully exploits this vulnerability could gain SYSTEM privileges on the affected host.

Affected products

  • Microsoft Windows 10 up to (excluding) 10.0.10240.19265, 10.0.14393.5066, 10.0.18363.2212, 10.0.19042.1645, 10.0.19043.1645, 10.0.19044.1645
  • Microsoft Windows 11 up to (excluding) 10.0.22000.613
  • Microsoft Windows Server 2022 up to (excluding) 10.0.20348.643
  • 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

  • 2022-04-13: disclosed
  • 2022-04-13: patched
  • 2022-04-13: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-04-13: exploited

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