Medium severity · published Mar 4, 2022
CVE-2021-43392
STMicroelectronics STSAFE-J 1.1.4, J-SAFE3 1.2.5, and J-SIGN sometimes allow attackers to obtain information on cryptographic secrets
6.2
CVSS
0.2%
EPSS
No
On KEV
Description
STMicroelectronics STSAFE-J 1.1.4, J-SAFE3 1.2.5, and J-SIGN sometimes allow attackers to obtain information on cryptographic secrets. 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 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JF
J-safe3 Firmware · ST
1.2.5 · source: NVD
SF
Stsafe-j Firmware · ST
1.1.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43392
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43392
Vendor Advisory
https://community.st.com/s/toparticles
Third Party Advisory
https://www.cert.ssi.gouv.fr/avis/CERTFR-2022-AVI-169/
More from J-safe3 Firmware
6.2
CVE-2021-43393
STMicroelectronics STSAFE-J 1.1.4, J-SAFE3 1.2.5, and J-SIGN sometimes allow attackers to abuse signature verification