Vulnerability Details : CVE-2021-43619
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.
Vulnerability category: Overflow
Products affected by CVE-2021-43619
- cpe:2.3:o:arm:trusted_firmware-m:1.4.0:*:*:*:*:*:*:*
- cpe:2.3:o:arm:trusted_firmware-m:1.4.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43619
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43619
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2021-43619
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-43619
-
https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/fwu_write_vulnerability.html
Advisory TFMV-5 — Trusted Firmware-M v1.5.0+a09adda4 documentationExploit;Patch;Third Party Advisory
-
https://developer.arm.com/support/arm-security-updates
Arm Security Updates – Arm DeveloperVendor Advisory
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https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/
trusted-firmware-m.git - Trusted Firmware for M profile Arm CPUsPatch;Third Party Advisory
-
https://www.trustedfirmware.org
Trusted Firmware - Open Source Secure World Software - Trusted FirmwareProduct
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