Strix
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CVE-2023-20520

CRITICALCVSS 9.8/10EPSS 0.79%

Last modified

CVE-2023-20520 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code execution. . EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code execution.

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
0.79%

51.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
AmdEpyc 72f3 Firmwaremilanpi_1.0.0.5
AmdEpyc 7313 Firmwaremilanpi_1.0.0.5
AmdEpyc 7313p Firmwaremilanpi_1.0.0.5
AmdEpyc 7343 Firmwaremilanpi_1.0.0.5
AmdEpyc 7373x Firmwaremilanpi_1.0.0.5
AmdEpyc 73f3 Firmwaremilanpi_1.0.0.5
AmdEpyc 7413 Firmwaremilanpi_1.0.0.5
AmdEpyc 7443 Firmwaremilanpi_1.0.0.5
AmdEpyc 7443p Firmwaremilanpi_1.0.0.5
AmdEpyc 7453 Firmwaremilanpi_1.0.0.5
AmdEpyc 7473x Firmwaremilanpi_1.0.0.5
AmdEpyc 74f3 Firmwaremilanpi_1.0.0.5
AmdEpyc 7513 Firmwaremilanpi_1.0.0.5
AmdEpyc 7543 Firmwaremilanpi_1.0.0.5
AmdEpyc 7543p Firmwaremilanpi_1.0.0.5
AmdEpyc 7573x Firmwaremilanpi_1.0.0.5
AmdEpyc 75f3 Firmwaremilanpi_1.0.0.5
AmdEpyc 7643 Firmwaremilanpi_1.0.0.5
AmdEpyc 7663 Firmwaremilanpi_1.0.0.5
AmdEpyc 7713 Firmwaremilanpi_1.0.0.5
AmdEpyc 7713p Firmwaremilanpi_1.0.0.5
AmdEpyc 7763 Firmwaremilanpi_1.0.0.5
AmdEpyc 7773x Firmwaremilanpi_1.0.0.5
AmdEpyc 7232p Firmwareromepi_1.0.0.d
AmdEpyc 7252 Firmwareromepi_1.0.0.d
AmdEpyc 7262 Firmwareromepi_1.0.0.d
AmdEpyc 7272 Firmwareromepi_1.0.0.d
AmdEpyc 7282 Firmwareromepi_1.0.0.d
AmdEpyc 7302 Firmwareromepi_1.0.0.d
AmdEpyc 7302p Firmwareromepi_1.0.0.d
AmdEpyc 7352 Firmwareromepi_1.0.0.d
AmdEpyc 7402 Firmwareromepi_1.0.0.d
AmdEpyc 7402p Firmwareromepi_1.0.0.d
AmdEpyc 7452 Firmwareromepi_1.0.0.d
AmdEpyc 7502 Firmwareromepi_1.0.0.d
AmdEpyc 7502p Firmwareromepi_1.0.0.d
AmdEpyc 7532 Firmwareromepi_1.0.0.d
AmdEpyc 7542 Firmwareromepi_1.0.0.d
AmdEpyc 7552 Firmwareromepi_1.0.0.d
AmdEpyc 7642 Firmwareromepi_1.0.0.d
AmdEpyc 7662 Firmwareromepi_1.0.0.d
AmdEpyc 7702 Firmwareromepi_1.0.0.d
AmdEpyc 7702p Firmwareromepi_1.0.0.d
AmdEpyc 7742 Firmwareromepi_1.0.0.d
AmdEpyc 7f32 Firmwareromepi_1.0.0.d
AmdEpyc 7f52 Firmwareromepi_1.0.0.d
AmdEpyc 7f72 Firmwareromepi_1.0.0.d
AmdEpyc 7h12 Firmwareromepi_1.0.0.d
AmdEpyc 7251 Firmwarenaplespi_1.0.0.h
AmdEpyc 7261 Firmwarenaplespi_1.0.0.h

Showing 50 of 63 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-20520?
Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing a stack-based buffer overrun potentially leading to arbitrary code execution.
How severe is CVE-2023-20520?
CVE-2023-20520 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.
How do I fix CVE-2023-20520?
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-2023-20520?

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

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Source: NVD / NIST