PT-2021-3150 · Microsoft · Windows Graphics+1

Lucas Leong + 1 · Published 2021-03-03 · Updated 2023-08-02 · CVE-2021-31188

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 Graphics Component (affected versions not specified)

Description The issue is related to the incorrect handling of Font Entry objects, which can allow an attacker to elevate their privileges. This can affect the system, potentially leading to information disclosure due to a use-after-free vulnerability in the win32kfull component.

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

LPE

Use After Free

Improper Privilege Management

Weakness Enumeration

CWE-416

CWE-269

CWE-264

Related Identifiers

BDU:2021-02820

CVE-2021-31188

ZDI-21-577

Affected Products

Windows

Windows Graphics

References · 11

• https://zerodayinitiative.com/advisories/ZDI-21-577 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-31188 · Security Note
• https://osv.dev/vulnerability/CVE-2021-31188 · Vendor Advisory
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31188 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31188 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-31188 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31188 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-02820 · Security Note
• https://t.me/cvenotify/14403 · Telegram Post
• https://t.me/cvenotify/14404 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021051116 · Note