Cryptographic API Misuse Vulnerability

[lialon]

Description:

In the "dane-discovery/dane_discovery/pki.py", I have identified a security vulnerability about insecure cryptographic algorithm. PKCS1v1.5 is vulnerable to the chosen-ciphertext attack.

Location:

https://github.com/ValiMail/dane-discovery/blob/main/dane_discovery/pki.py#L326

cert_to_check.tbs_certificate_bytes, padding.PKCS1v15(),

Reference

• CWE-780: Use of RSA Algorithm without OAEP

Recommendations:

Try using other padding(OAEP) instead of PKCS1v1.5.