Vulnerability identifier: #VU63688

Vulnerability risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-26349

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
3rd Gen AMD EPYC Processors
Hardware solutions / Firmware

Vendor:

Description

The vulnerability allows an attacker to compromise the guest OS.

The vulnerability exists due to failure to assign a new report ID to an imported guest. This can result in an SEV-SNP guest VM being tricked into trusting a dishonest Migration Agent (MA).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028

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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.