Multiple vulnerabilities in AMD products

Published: 2021-05-17 | Updated: 2022-03-22

Risk	Low
Patch available	NO
Number of vulnerabilities	2
CVE-ID	CVE-2020-12967 CVE-2021-26311
CWE-ID	CWE-94
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	AMD EPYC Embedded Processors Hardware solutions / Firmware 3rd Gen AMD EPYC Processors Hardware solutions / Firmware 2nd Gen AMD EPYC Processors Hardware solutions / Firmware 1st Gen AMD EPYC Processors Hardware solutions / Firmware
Vendor	AMD

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Code Injection

EUVDB-ID: #VU53292

Risk: Low

CVSSv3.1: 6.6 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2020-12967

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to the lack of nested page table protection in the AMD SEV/SEV-ES feature. A remote administrator can execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

AMD EPYC Embedded Processors: All versions

3rd Gen AMD EPYC Processors: All versions

2nd Gen AMD EPYC Processors: All versions

1st Gen AMD EPYC Processors: All versions

External links

http://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1004

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

2) Code Injection

EUVDB-ID: #VU53293