CVE-2023-28252: Microsoft Windows Common Log File System (CLFS) Driver Privilege Escalation Vulnerability

CVE-2023-28252 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2023-04-11

An out-of-bounds write vulnerability in the Microsoft Windows Common Log File System (CLFS) driver allows a local attacker to gain elevated privileges. The flaw stems from a heap-based buffer overflow that can be exploited to execute code with SYSTEM privileges.

Technologies: Microsoft Windows. Vendors: Microsoft.

Quick answers

Is CVE-2023-28252 exploited in the wild?
Yes. CVE-2023-28252 is known to be exploited in the wild, first recorded on 11 April 2023. Treat it as urgent.
How severe is CVE-2023-28252?
Critical severity, with a CVSS score of 7.8, published 11 April 2023.
Which products and versions are affected?
Microsoft Windows 10 1507, 1607, 1809, 20H2, 21H2, 22H2; Microsoft Windows 11 21H2, 22H2; Microsoft Windows Server 2008 SP2, R2 SP1; Microsoft Windows Server 2012 Gold, R2; and 3 more.
Is there a fix for CVE-2023-28252?
A patch was published on 2023-04-11. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2023-28252 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2023-28252?
Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Microsoft Windows 10 1507, 1607, 1809, 20H2, 21H2, 22H2
  • Microsoft Windows 11 21H2, 22H2
  • Microsoft Windows Server 2008 SP2, R2 SP1
  • Microsoft Windows Server 2012 Gold, R2
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2022

Timeline

  • 2023-04-11: disclosed
  • 2023-04-11: advisory
  • 2023-04-11: patched
  • 2023-04-11: kev added: Added to CISA KEV catalog on the same day as publication.
  • 2023-04-11: exploited: Reported as exploited in the wild at the time of disclosure.

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