Vulnerability identifier: #VU59408

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-21843

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in Windows IKE Extension. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1809 10.0.17763.1, 10 1909 10.0.18363.476, 10 20H2 10.0.19042.572, 10, 10 1607 10.0.14393.10, 7, 8.1 - 8.1 RT, 10 21H1 10.0.19043.985, 11 21H2 10.0.22000.194, 10 21H2 10.0.19044.1288, 10 S, 10 1507 10.0.10240.16405, 10 Mobile, 10 2004 10.0.19041.264, 10 1903 10.0.18362.116, 10 1803 10.0.17134.48, 10 1709 10.0.16299.19, 10 1703 10.0.15063.138, 10 1511 10.0.10586.3, 10 Gold

Windows Server: 2008 R2 - 2022 10.0.20348.202

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21843

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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.