CVE-2021-43393 Security feature bypass in n/a
Attackers can bypass signature verification in STMicroelectronics Java Card secure elements, compromising the integrity of cryptographic operations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-43393?
CVE-2021-43393 is a medium-severity vulnerability in n/a, published on 4 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-347
Which versions are affected by CVE-2021-43393?
It affects 2 products.
Products include St J-Safe3 Firmware, St Stsafe-J Firmware.
How do I fix CVE-2021-43393?
No fix has been published for CVE-2021-43393 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-43393 being exploited?
There is no known exploitation of CVE-2021-43393 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-94rv-67rm-q3v8.