Cryptographic API Misuse Vulnerability

[lialon]

Description:

In the "crypt4gh/crypt4gh/keys/ssh.py", I have identified a security vulnerability about insecure cryptographic algorithm. Triple DES(TDEA) is disallowed or for legacy use after 2023.

Location:

https://github.com/EGA-archive/crypt4gh/blob/master/crypt4gh/keys/ssh.py#L70

return Cipher(algorithms.TripleDES(key), modes.CBC(iv), backend=backend)

Reference

• CWE-327: Use of a Broken or Risky Cryptographic Algorithm
• https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-131Ar2.pdf
• 

Recommendations:

Try using other symmetric encryption algorithm like AES instead of TDEA.