Vulnerability Details : 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.
Products affected by CVE-2021-43393
- cpe:2.3:o:st:stsafe-j_firmware:1.1.4:*:*:*:*:*:*:*
- cpe:2.3:o:st:j-safe3_firmware:1.2.5:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43393
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43393
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
1.9
|
LOW | AV:L/AC:M/Au:N/C:N/I:P/A:N |
3.4
|
2.9
|
NIST | |
6.2
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
2.5
|
3.6
|
NIST |
CWE ids for CVE-2021-43393
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The product does not verify, or incorrectly verifies, the cryptographic signature for data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-43393
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https://www.cert.ssi.gouv.fr/avis/CERTFR-2022-AVI-169/
Multiples vulnérabilités dans les produits STMicroelectronics – CERT-FRThird Party Advisory
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https://community.st.com/s/toparticles
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