CVE-2021-46754
Insufficient input validation in the ASP (AMD Secure Processor) bootloader may allow an attacker with a compromised Uapp or ABL to coerce the bootloader into exposing sensitive information to the SMU (System Management Unit) resulting in a potential…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.56%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Insufficient input validation in the ASP (AMD Secure Processor) bootloader may allow an attacker with a compromised Uapp or ABL to coerce the bootloader into exposing sensitive information to the SMU (System Management Unit) resulting in a potential loss of confidentiality and integrity.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 0.56% probability · 45th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- amd/ryzen 5300g firmware · amd/ryzen 5300ge firmware · amd/ryzen 5500 firmware · amd/ryzen 5600 firmware · amd/ryzen 5600g firmware · amd/ryzen 5600ge firmware · amd/ryzen 5600x firmware · amd/ryzen 5700g firmware · amd/ryzen 5700ge firmware · amd/ryzen 5700x firmware · amd/ryzen 5800 firmware · amd/ryzen 5800x3d firmware · amd/ryzen 5800x firmware · amd/ryzen 5900 firmware · amd/ryzen 5900x firmware · amd/ryzen 5945wx firmware · amd/ryzen 5950x firmware · amd/ryzen 5955wx firmware · amd/ryzen 5965wx firmware · amd/ryzen 5975wx firmware · +36 more
- Source
- psirt@amd.com
References
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001Vendor Advisory
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001Vendor Advisory
- https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.