PT-2021-6321 · Microsoft · Windows

Abdelhamid Naceri · Published 2021-12-14 · Updated 2024-08-01 · CVE-2021-43237

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 (affected versions not specified)

Description The issue is related to an elevation-of-privilege vulnerability in Windows Setup. It is caused by incorrect link resolution before accessing a file, which can allow an attacker to elevate their privileges. This vulnerability can be exploited to affect the system.

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

LPE

Link Following

Weakness Enumeration

CWE-59

Related Identifiers

BDU:2022-01313

CVE-2021-43237

ZDI-22-018

Affected Products

Windows

References · 11

• https://bdu.fstec.ru/vul/2022-01313 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-43237 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-43237 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-22-018 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-43237 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43237 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43237 · Security Note
• https://osv.dev/vulnerability/CVE-2021-43237 · Vendor Advisory
• https://t.me/cibsecurity/34008 · Telegram Post
• https://t.me/cvenotify/28381 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021121475 · Note