CVE-2021-43393

Severity Score

6.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

STMicroelectronics STSAFE-J 1.1.4, J-SAFE3 1.2.5, and J-SIGN sometimes allow attackers to abuse signature verification. This is associated with the ECDSA signature algorithm on the Java Card J-SAFE3 and STSAFE-J platforms exposing a 3.0.4 Java Card API. It is exploitable for STSAFE-J in closed configuration and J-SIGN (when signature verification is activated) but not for J-SAFE3 EPASS BAC and EAC products. It might also impact other products based on the J-SAFE-3 Java Card platform.

STMicroelectronics STSAFE-J 1.1.4, J-SAFE3 1.2.5, y J-SIGN a veces permiten a atacantes abusar de la verificación de firmas. Esto está asociado con el algoritmo de firma ECDSA en las plataformas Java Card J-SAFE3 y STSAFE-J que exponen una API Java Card versión 3.0.4. Es explotable para STSAFE-J en configuración cerrada y J-SIGN (cuando la verificación de firmas está activada) pero no para los productos J-SAFE3 EPASS BAC y EAC. También podría afectar a otros productos basados en la plataforma J-SAFE-3 Java Card

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-11-04 CVE Reserved
2022-03-04 CVE Published
2023-09-25 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-347: Improper Verification of Cryptographic Signature

CAPEC

References (2)

URL	Tag	Source
https://www.cert.ssi.gouv.fr/avis/CERTFR-2022-AVI-169	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://community.st.com/s/toparticles	2022-03-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
St Search vendor "St"	Stsafe-j Firmware Search vendor "St" for product "Stsafe-j Firmware"	1.1.4 Search vendor "St" for product "Stsafe-j Firmware" and version "1.1.4"	-	Affected	in	St Search vendor "St"	Stsafe-j Search vendor "St" for product "Stsafe-j"	-	-	Safe
St Search vendor "St"	J-safe3 Firmware Search vendor "St" for product "J-safe3 Firmware"	1.2.5 Search vendor "St" for product "J-safe3 Firmware" and version "1.2.5"	-	Affected	in	St Search vendor "St"	J-safe3 Search vendor "St" for product "J-safe3"	-	-	Safe