Strix
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CVE-2021-26370

HIGHCVSS 7.1/10EPSS 0.22%

Last modified

CVE-2021-26370 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary bootloader memory with SPI ROM contents resulting in a loss of integrity and availability.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary bootloader memory with SPI ROM contents resulting in a loss of integrity and availability.

Metrics

CVSS 3.1
7.1/10

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

EPSS Probability
0.22%

12.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
AmdEpyc 7763 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7713p Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7713 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7663 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7643 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 75f3 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7543p Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7543 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7513 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7453 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 74f3 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7443p Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7443 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7413 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 73f3 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7343 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7313p Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7313 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 72f3 Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7773x Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7473x Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7573x Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7373x Firmware< milanpi-sp3_1.0.0.4
AmdEpyc 7002 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7232p Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7252 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7262 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7272 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7282 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7302 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7302p Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7352 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7402 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7402p Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7452 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7502 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7502p Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7532 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7542 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7552 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7642 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7662 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7702 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7702p Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7742 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7f72 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7f52 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7f32 Firmware< romepi-sp3_1.0.0.c
AmdEpyc 7h12 Firmware< romepi-sp3_1.0.0.c

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-26370?
Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary bootloader memory with SPI ROM contents resulting in a loss of integrity and availability.
How severe is CVE-2021-26370?
CVE-2021-26370 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26370?
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-2021-26370?

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

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Source: NVD / NIST