Vulnerability · Published Mar 4, 2022 · Assigned by mitre

CVE-2021-43393

Medium 6.2

In plain English

A medium-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities).

Severity (CVSS NVD)6.2Medium

Exploit odds (30 days)0.2%top 95.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://community.st.com/s/toparticles x_refsource_MISC
https://www.cert.ssi.gouv.fr/avis/CERTFR-2022-AVI-169/ x_refsource_MISC