PT-2023-2243 · Microsoft · Windows Common Log File System Driver+1

Boris Larin + 3 · Published 2023-04-11 · Updated 2026-02-07 · CVE-2023-28252

Positive Technologies · (AI Summary)

CVSS v3.1

7.8

High

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Windows Common Log File System Driver (affected versions not specified)

Description The issue is related to an elevation-of-privilege vulnerability in the Windows Common Log File System (CLFS) Driver. This vulnerability allows attackers to affect the system. It has been exploited in the wild, with ransomware operators using it to target victims. The vulnerability is associated with a buffer overflow in memory, which can be exploited to elevate privileges. There have been reports of this vulnerability being used by ransomware groups, including Nokoyawa, in attacks on small and medium-sized businesses in various regions.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

LPE

Heap Based Buffer Overflow

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-119

CWE-787

Related Identifiers

BDU:2023-01998

CVE-2023-28252

Affected Products

Windows

Windows Common Log File System Driver

References · 80

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/cve_2023_28252_clfs_driver.rb · Exploit
• 🔥 https://github.com/fortra/CVE-2023-28252 · Exploit
• 🔥 https://github.com/duck-sec/CVE-2023-28252-Compiled-exe · Exploit
• 🔥 https://github.com/byt3n33dl3/CLFS · Exploit
• 🔥 https://github.com/pxcs/CLFS · Exploit
• 🔥 https://github.com/bkstephen/Compiled-PoC-Binary-For-CVE-2023-28252 · Exploit
• 🔥 http://packetstormsecurity.com/files/174668/Windows-Common-Log-File-System-Driver-clfs.sys-Privilege-Escalation.html · Exploit
• 🔥❌ https://github.com/Malwareman007/CVE-2023-28252 · Exploit, Deleted
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28252 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-01998 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-28252 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-28252 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2023-28252 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-28252 · Security Note
• https://osv.dev/vulnerability/CVE-2023-28252 · Vendor Advisory