CVE-2021-43619

Public Exploit

Description

Trusted Firmware M 1.4.x through 1.4.1 has a buffer overflow issue in the Firmware Update partition. In the IPC model, a psa_fwu_write caller from SPE or NSPE can overwrite stack memory locations.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.17%
Vendor Advisory arm.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://developer.arm.com/support/arm-security-updates vendor advisory
https://www.trustedfirmware.org product
https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/ third party advisory patch
https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/fwu_write_vulnerability.html exploit third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-43619?
CVE-2021-43619 has been scored as a high severity vulnerability.
How to fix CVE-2021-43619?
To fix CVE-2021-43619, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-43619 being actively exploited in the wild?
It is possible that CVE-2021-43619 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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