Vulnerability identifier: #VU28879

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1259

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

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

Vendor: Microsoft

Description

This vulnerability allows a remote attacker to bypass security rescritions feature.

The vulnerability exists due to the Windows Host Guardian Service improperly handles hashes recorded and logged. A remote authenticated attacker can change existing event log types to a type the parsers do not interpret and append their own hash without triggering an alert. 

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2016 - 2019 2004

Windows: 10 - 10 2004

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External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1259

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.