PT-2023-1520 · Microsoft · Windows+1

Marcin Wiazowski · Published 2023-02-14 · Updated 2024-05-29 · CVE-2023-21822

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 a use-after-free error in the win32kfull driver of the Windows operating system, which can be exploited to execute arbitrary code with system privileges. This vulnerability is associated with the improper handling of memory after it has been freed. Successful exploitation can allow an attacker to gain SYSTEM privileges, enabling them to establish a foothold in the system after initial access is obtained through other means.

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

LPE

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2023-00963

CVE-2023-21822

ZDI-23-163

Affected Products

Windows

Windows Graphics

References · 13

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21822 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21822 · Security Note
• https://osv.dev/vulnerability/CVE-2023-21822 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-00963 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-23-163 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2023-21822 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-21822 · Security Note
• https://twitter.com/0xor0ne/status/1722328386280849899 · Twitter Post
• https://t.me/cybersecuritytechnologies/8843 · Telegram Post
• https://twitter.com/akaclandestine/status/1690660019459502080 · Twitter Post
• https://zerodayinitiative.com/blog/2023/8/1/exploiting-a-flaw-in-bitmap-handling-in-windows-user-mode-printer-drivers · Note
• https://t.me/cibsecurity/58171 · Telegram Post
• https://twitter.com/ksg93rd/status/1690788985298157568 · Twitter Post