Vulnerability identifier: #VU68136

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-34689

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in the Windows CryptoAPI. A remote attacker can manipulate an existing public x.509 certificate, spoof page content and and perform actions such as authentication or code signing as the targeted certificate.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2003 - 2022 20H2

Windows: 10 - 10 S, 11 - 11 21H2, 7 - 7 SP1, 8.1 - 8.1 RT, 8 - 8 RT, 2000, XP, Vista

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-34689

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.