Improper input validation in Amd 1st Gen Epyc™ Processors
CVE-2021-46756
Insufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious Uapp or ABL to send malformed or invalid syscall to the bootloader resulting in a potential denial…
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.006 (46.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Amd 1st Gen Epyc™ Processors — versions various
- Amd 2nd Gen Epyc™ Processors — versions various
- Amd 2nd Gen Ryzen™ Threadripper™ Processors “Colfax” — versions various
- Amd 3rd Gen Epyc™ Processors — versions various
- Amd 3rd Gen Ryzen™ Threadripper™ Processors “Castle Peak” Hedt — versions various
- Amd Ryzen™ 5000 Series Desktop Processors “Vermeer” Am4 — versions various
- Amd Athlon™ 3000 Series Mobile Processors With Radeon™ Graphics “Dali”/”dali” Ulp — versions various
- Amd Athlon™ 3000 Series Mobile Processors With Radeon™ Graphics “Pollock” — versions various
- Amd Epyc_7232p
- Amd Epyc_7232p_firmware — versions romepi_1.0.0.e
Weakness classification (CWE)
References
- psirt@amd.com (vendor-advisory, Vendor Advisory)
- psirt@amd.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-46756?
- CVE-2021-46756 is a critical-severity vulnerability in Amd 1st Gen Epyc™ Processors, classified under Improper Input Validation. CVSS score: 9.1/10. Published 2023-05-09.
- How severe is CVE-2021-46756?
- Critical severity. CVSS v3 base score is 9.1 out of 10.