CVE Vulnerabilities

CVE-2021-34498

Use After Free

Published: Jul 14, 2021 | Modified: Nov 21, 2024
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

Windows GDI Elevation of Privilege Vulnerability

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Windows_10 Microsoft - (including) - (including)
Windows_10 Microsoft 20h2 (including) 20h2 (including)
Windows_10 Microsoft 21h1 (including) 21h1 (including)
Windows_10 Microsoft 1607 (including) 1607 (including)
Windows_10 Microsoft 1809 (including) 1809 (including)
Windows_10 Microsoft 1909 (including) 1909 (including)
Windows_10 Microsoft 2004 (including) 2004 (including)
Windows_7 Microsoft –sp1 (including) –sp1 (including)
Windows_8.1 Microsoft - (including) - (including)
Windows_rt_8.1 Microsoft - (including) - (including)
Windows_server_2008 Microsoft –sp2 (including) –sp2 (including)
Windows_server_2008 Microsoft r2-sp1 (including) r2-sp1 (including)
Windows_server_2012 Microsoft - (including) - (including)
Windows_server_2012 Microsoft r2 (including) r2 (including)
Windows_server_2016 Microsoft - (including) - (including)
Windows_server_2016 Microsoft 20h2 (including) 20h2 (including)
Windows_server_2016 Microsoft 2004 (including) 2004 (including)
Windows_server_2019 Microsoft - (including) - (including)

Potential Mitigations

References