CVE-2021-43619

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Trusted Firmware M versiones 1.4.x hasta 1.4.1, presenta un problema de desbordamiento de búfer en la partición de actualización de firmware. En el modelo IPC, un llamador psa_fwu_write desde SPE o NSPE puede sobrescribir ubicaciones de memoria de la pila.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-11-15 CVE Reserved
2022-03-01 CVE Published
2024-05-23 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (4)

URL	Tag	Source
https://www.trustedfirmware.org	Product

URL	Date	SRC
https://tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/fwu_write_vulnerability.html	2024-08-04

URL	Date	SRC
https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git	2022-03-09

URL	Date	SRC
https://developer.arm.com/support/arm-security-updates	2022-03-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Arm Search vendor "Arm"		Trusted Firmware-m Search vendor "Arm" for product "Trusted Firmware-m"				1.4.0 Search vendor "Arm" for product "Trusted Firmware-m" and version "1.4.0"		-		Affected
Arm Search vendor "Arm"		Trusted Firmware-m Search vendor "Arm" for product "Trusted Firmware-m"				1.4.1 Search vendor "Arm" for product "Trusted Firmware-m" and version "1.4.1"		-		Affected