Multiple vulnerabilities in Microsoft Windows Defender Credential Guard

Published: 2022-08-15

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-35822 CVE-2022-34711
CWE-ID	CWE-254 CWE-119
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Security features bypass

EUVDB-ID: #VU66503

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-35822

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a local user to bypass implemented security restrictions.

the vulnerability exists due to unspecified error in Windows Defender Credential Guard. A local user can bypass Kerberos protection.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 - 11 21H2

Windows Server: 2016 - 2022 20H2

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-35822

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.

2) Buffer overflow

EUVDB-ID: #VU66502