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CVE-2021-46759

MEDIUMCVSS 6.1/10EPSS 0.28%

Last modified

CVE-2021-46759 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Improper syscall input validation in AMD TEE (Trusted Execution Environment) may allow an attacker with physical access and control of a Uapp that runs under the bootloader to reveal the contents of the ASP (AMD Secure Processor) bootloader accessible memory to a serial port, resulting in a potential loss of integrity. . EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

Improper syscall input validation in AMD TEE (Trusted Execution Environment) may allow an attacker with physical access and control of a Uapp that runs under the bootloader to reveal the contents of the ASP (AMD Secure Processor) bootloader accessible memory to a serial port, resulting in a potential loss of integrity.

Metrics

CVSS 3.1
6.1/10

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability
0.28%

20.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
AmdRyzen 5300g Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5300g Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5300ge Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5300ge Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5500 Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5500 Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5600 Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5600 Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5600g Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5600g Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5600ge Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5600ge Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5600x Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5600x Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5700g Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5700g Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5700ge Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5700ge Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5700x Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5700x Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5800 Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5800 Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5800x3d Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5800x3d Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5800x Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5800x Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5900 Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5900 Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5900x Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5900x Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5945wx Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5945wx Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5950x Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5950x Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5955wx Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5955wx Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5965wx Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5965wx Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5975wx Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5975wx Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 5995wx Firmwarecezannepi-fp6_1.0.0.8
AmdRyzen 5995wx Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3100 Firmwarecomboam4pi_1.0.0.9
AmdRyzen 3100 Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3100 Firmwarecomboam4v2_pi_1.2.0.8
AmdRyzen 3100 Firmwarepicassopi-fp5_1.0.0.e
AmdRyzen 3100 Firmwarerenoirpi-fp6_1.0.0.8
AmdRyzen 3300x Firmwarecomboam4pi_1.0.0.9
AmdRyzen 3300x Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3300x Firmwarecomboam4v2_pi_1.2.0.8

Showing 50 of 189 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-46759?
Improper syscall input validation in AMD TEE (Trusted Execution Environment) may allow an attacker with physical access and control of a Uapp that runs under the bootloader to reveal the contents of the ASP (AMD Secure Processor) bootloader accessible memory to a serial port, resulting in a potential loss of integrity.
How severe is CVE-2021-46759?
CVE-2021-46759 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2021-46759?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST