Strix
26.1K

CVE-2021-46792

MEDIUMCVSS 5.9/10EPSS 0.40%

Last modified

CVE-2021-46792 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious BIOS to create a race condition causing the ASP bootloader to perform out-of-bounds SRAM reads upon an S3 resume event potentially leading to a denial of service. . EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious BIOS to create a race condition causing the ASP bootloader to perform out-of-bounds SRAM reads upon an S3 resume event potentially leading to a denial of service.

Metrics

CVSS 3.1
5.9/10

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

EPSS Probability
0.40%

31.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
AmdRyzen 5300g Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5300ge Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5500 Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5600 Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5600g Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5600ge Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5600x Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5700g Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5700ge Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5700x Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5800 Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5800x3d Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5800x Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5900 Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5900x Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5945wx Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5950x Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5955wx Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5965wx Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5975wx Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 5995wx Firmwarecezannepi-fp6_1.0.0.6
AmdRyzen 3100 Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3100 Firmwarepicasso_pi-fp5_1.0.0.4
AmdRyzen 3100 Firmwarerenoirpi-fp6_1.0.0.7
AmdRyzen 3300x Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3300x Firmwarepicasso_pi-fp5_1.0.0.4
AmdRyzen 3300x Firmwarerenoirpi-fp6_1.0.0.7
AmdRyzen 3500 Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3500 Firmwarepicasso_pi-fp5_1.0.0.4
AmdRyzen 3500 Firmwarerenoirpi-fp6_1.0.0.7
AmdRyzen 3500x Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3500x Firmwarepicasso_pi-fp5_1.0.0.4
AmdRyzen 3500x Firmwarerenoirpi-fp6_1.0.0.7
AmdRyzen 3600 Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3600 Firmwarepicasso_pi-fp5_1.0.0.4
AmdRyzen 3600 Firmwarerenoirpi-fp6_1.0.0.7
AmdRyzen 3600x Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3600x Firmwarepicasso_pi-fp5_1.0.0.4
AmdRyzen 3600x Firmwarerenoirpi-fp6_1.0.0.7
AmdRyzen 3600xt Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3600xt Firmwarepicasso_pi-fp5_1.0.0.4
AmdRyzen 3600xt Firmwarerenoirpi-fp6_1.0.0.7
AmdRyzen 3800x Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3800x Firmwarepicasso_pi-fp5_1.0.0.4
AmdRyzen 3800x Firmwarerenoirpi-fp6_1.0.0.7
AmdRyzen 3800xt Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3800xt Firmwarepicasso_pi-fp5_1.0.0.4
AmdRyzen 3800xt Firmwarerenoirpi-fp6_1.0.0.7
AmdRyzen 3900 Firmwarecomboam4v2_pi_1.2.0.5
AmdRyzen 3900 Firmwarepicasso_pi-fp5_1.0.0.4

Showing 50 of 99 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-46792?
Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious BIOS to create a race condition causing the ASP bootloader to perform out-of-bounds SRAM reads upon an S3 resume event potentially leading to a denial of service.
How severe is CVE-2021-46792?
CVE-2021-46792 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.
How do I fix CVE-2021-46792?
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.

Are you affected by CVE-2021-46792?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST