Privilege escalation in Microsoft Windows CNG Key Isolation Service



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2024-30031
CWE-ID CWE-416
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU89476

Risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-30031

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows CNG Key Isolation Service. A local user can win a race condition and gain elevated privileges on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: before 10 21H2 10.0.19044.4412, 10 22H2 10.0.19045.4412, 10 1507 10.0.10240.20651, 10 1607 10.0.14393.6981, 10 1809 10.0.17763.5820, 11 21H2 10.0.22000.2960, 11 22H2 10.0.22621.3593, 11 23H2 10.0.22631.3593

Windows Server: before 2008 R2 6.1.7601.27117, 2008 6.0.6003.22668, 2012 R2 6.3.9600.21972, 2012 6.2.9200.24868, 2016 10.0.14393.6981, 2022 10.0.20348.2458, 2022 10.0.20348.2461

CPE2.3 External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-30031


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.



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