Attacker Value
Very High
(1 user assessed)
Exploitability
Unknown
(1 user assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
4

CVE-2023-28252

Disclosure Date: April 11, 2023
Exploited in the Wild
Add MITRE ATT&CK tactics and techniques that apply to this CVE.
Privilege Escalation
Techniques
Validation
Validated

Description

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Add Assessment

3
Ratings
Technical Analysis

This was discovered because of zero-day exploitation perpetrated by a skilled adversary — final payload was Nokoyawa ransomware in at least one case, as Kaspersky details here. We’ve seen a sustained burst of driver exploitation by a range of threat actors the past two years. The trend continues.

Patched in April 2023 Patch Tuesday, so grab those updates quickly as always!

CVSS V3 Severity and Metrics
Base Score:
7.8 High
Impact Score:
5.9
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

  • microsoft

Products

  • windows 10 1507,
  • windows 10 1607,
  • windows 10 1809,
  • windows 10 20h2,
  • windows 10 21h2,
  • windows 10 22h2,
  • windows 11 21h2,
  • windows 11 22h2,
  • windows server 2008 -,
  • windows server 2008 r2,
  • windows server 2012 -,
  • windows server 2012 r2,
  • windows server 2016 -,
  • windows server 2019 -,
  • windows server 2022 -

Additional Info

Technical Analysis