Cryptographic API Misuse Vulnerability

[lialon]

Description:

In the "lemur/lemur/common/utils.py", I have identified a security vulnerability about insecure cryptographic padding. PKCS1v1.5 is vulnerable to the chosen-ciphertext attack.

Location:

https://github.com/Netflix/lemur/blob/master/lemur/common/utils.py#L281

padder = padding.PKCS1v15()

Reference

• CWE-780: Use of RSA Algorithm without OAEP

Recommendations:

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