Vulnerability identifier: #VU94741

Vulnerability risk: Low

CVSSv3.1: 2.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-31346

CWE-ID: CWE-665

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
3rd Gen AMD EPYC Processors
Hardware solutions / Firmware
4th Gen AMD EPYC Processors
Hardware solutions / Firmware

Vendor: AMD

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to improper initialization in SEV Firmware. A local user can run a specially crafted application to access stale data from other guests.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

3rd Gen AMD EPYC Processors: All versions

4th Gen AMD EPYC Processors: All versions

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External links
http://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3007

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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.