#VU84027 Input validation error in AMD products - CVE-2023-20526

Vulnerability identifier: #VU84027

Vulnerability risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-20526

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
1st Gen AMD EPYC Processors
Hardware solutions / Firmware
2nd Gen AMD EPYC Processors
Hardware solutions / Firmware
3rd Gen AMD EPYC Processors
Hardware solutions / Firmware

Vendor: AMD

Description

The vulnerability allows an attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied input in the ASP Bootloader. An attacker with physical access to device can read contents of ASP memory.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

1st Gen AMD EPYC Processors: before NaplesPI 1.0.0.H

2nd Gen AMD EPYC Processors: before RomePI 1.0.0.D

3rd Gen AMD EPYC Processors: before MilanPI 1.0.0.5

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External links
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3002.html

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Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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