#VU78220 Security features bypass in Windows Server - CVE-2023-35348

Vulnerability identifier: #VU78220

Vulnerability risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-35348

CWE-ID: CWE-254

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

Description

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to security features bypass in Active Directory Federation Service. A local administrator can craft a long-lived assertion using the Windows Hello for Business Key from the victim's device.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2016 10.0.14393.10, 2019 10.0.17763.1 - 2019 2004, 2022 10.0.20348.202

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External links
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35348

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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.