CVE-2021-43393

Description

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.

Category

6.2
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory st.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://community.st.com/s/toparticles vendor advisory
https://www.cert.ssi.gouv.fr/avis/CERTFR-2022-AVI-169/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-43393?
CVE-2021-43393 has been scored as a medium severity vulnerability.
How to fix CVE-2021-43393?
To fix CVE-2021-43393, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-43393 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-43393 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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