PT-2021-3301 · Microsoft · Windows Common Log File System Driver+1

Published 2021-06-08 · Updated 2024-07-03 · CVE-2021-31954

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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 a buffer overflow in the dynamic memory of the Windows Common Log File System (CLFS) driver, which can allow an attacker to elevate their privileges. This is an elevation-of-privilege vulnerability that affects the system.

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

LPE

Improper Privilege Management

Heap Based Buffer Overflow

Weakness Enumeration

CWE-269

CWE-122

Related Identifiers

BDU:2021-03075

CVE-2021-31954

ZDI-21-668

Affected Products

Windows

Windows Common Log File System Driver

References · 13

• https://zerodayinitiative.com/advisories/ZDI-21-668 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/666164 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-31954 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03075 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31954 · Security Note
• https://osv.dev/vulnerability/CVE-2021-31954 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-31954 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31954 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31954 · Vendor Advisory
• https://t.me/cvenotify/15899 · Telegram Post
• https://t.me/cvenotify/16097 · Telegram Post
• https://t.me/cvenotify/15915 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021060810 · Note