Privilege escalation in Microsoft Windows Secure kernel mode

1) Improper access control

EUVDB-ID: #VU95525

Risk: Low

CVSSv4.0: 5.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-21302

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper access restrictions within the Virtualization Based Security (VBS) implementation. A local privileged user can circumvent some features of VBS and exfiltrate data protected by VBS, leading to privilege escalation.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Windows: 10 20H2 10.0.19042.610 - 11

Windows Server: 2016 10.0.14393.10 - 2022 23H2

CPE2.3

• cpe:2.3:o:microsoft:windows:10_20H2:10.0.19042.2965:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows:10_21H1:10.0.19043.2364:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows:10_21H2:10.0.19044.4651:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows:10_22H2:10.0.19045.4651:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows:10_1507:10.0.10240.20710:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows:10_1607:10.0.14393.7159:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows:10_1803:10.0.17134.2208:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows:10_1809:10.0.17763.6054:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows:10_1903:10.0.18362.1256:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows:10_1909:10.0.18363.2274:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2016:10.0.14393.7159:*:*:*:*:*:*

External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21302

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.