Speculative information disclosure on some AMD processors

1) Division by zero

EUVDB-ID: #VU79239

Risk: Low

CVSSv3.1: 3.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2023-20588

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

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

The vulnerability exists due to a divide by zero error that can return speculative data. A local user can gain access to potentially sensitive information.

Mitigation

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

Vulnerable software versions

AMD EPYC 7001 Processors: All versions

AMD Athlon 3000 Series Processors with Radeon Graphics: All versions

AMD Ryzen 3000 Series Processors with Radeon Graphics: All versions

AMD Athlon PRO 3000 Series Processors with Radeon Vega Graphics: All versions

AMD Ryzen PRO 3000 Series Processors with Radeon Vega Graphics: All versions

External links

http://www.amd.com/en/resources/product-security/bulletin/amd-sb-7007.html

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.