CVE-2021-43393

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.

CVSS v3 6.2 MEDIUM
CVSS v2.0 1.9 LOW

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

1.9^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:M/Au:N/C:N/I:P/A:N

Exploitability : 3.4 / Impact : 2.9

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://community.st.com/s/toparticles	Vendor Advisory
https://www.cert.ssi.gouv.fr/avis/CERTFR-2022-AVI-169/	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:st:stsafe-j_firmware:1.1.4:*:*:*:*:*:*:*

cpe:2.3:h:st:stsafe-j:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:st:j-safe3_firmware:1.2.5:*:*:*:*:*:*:*

cpe:2.3:h:st:j-safe3:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2022-03-04 13:15

Updated : 2024-02-28 19:09

NVD link : CVE-2021-43393

Mitre link : CVE-2021-43393

CVE.ORG link : CVE-2021-43393

JSON object : View

Products Affected

st

j-safe3
j-safe3_firmware
stsafe-j_firmware
stsafe-j

CWE

CWE-347

Improper Verification of Cryptographic Signature

{"id": "CVE-2021-43393", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 1.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "LOW", "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.5}]}, "published": "2022-03-04T13:15:08.240", "references": [{"url": "https://community.st.com/s/toparticles", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.cert.ssi.gouv.fr/avis/CERTFR-2022-AVI-169/", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-347"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "STMicroelectronics STSAFE-J 1.1.4, J-SAFE3 1.2.5, y J-SIGN a veces permiten a atacantes abusar de la verificaci\u00f3n de firmas. Esto est\u00e1 asociado con el algoritmo de firma ECDSA en las plataformas Java Card J-SAFE3 y STSAFE-J que exponen una API Java Card versi\u00f3n 3.0.4. Es explotable para STSAFE-J en configuraci\u00f3n cerrada y J-SIGN (cuando la verificaci\u00f3n de firmas est\u00e1 activada) pero no para los productos J-SAFE3 EPASS BAC y EAC. Tambi\u00e9n podr\u00eda afectar a otros productos basados en la plataforma J-SAFE-3 Java Card"}], "lastModified": "2022-03-10T15:05:00.993", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:st:stsafe-j_firmware:1.1.4:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BC8F50AF-97F7-47B1-BDE2-AC15446F1768"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:st:stsafe-j:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "80AB60B5-F0C0-46A8-B05A-0C11F35EE49E"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:st:j-safe3_firmware:1.2.5:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BC735EDA-3D15-4623-A29E-0D717D35E9BF"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:st:j-safe3:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "7C03B714-DC65-404C-8052-86E9CE1BE561"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}