rspec/rules/S2257/python/rule.adoc
2021-01-20 04:06:26 +00:00

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The use of a non-standard algorithm is dangerous because a determined attacker may be able to break the algorithm and compromise whatever data has been protected. Standard algorithms like ``Argon2PasswordHasher``, ``BCryptPasswordHasher``, ... should be used instead.
This rule tracks creation of ``BasePasswordHasher`` subclasses for Django applications.
include::../recommended.adoc[]
== Sensitive Code Example
----
class CustomPasswordHasher(BasePasswordHasher): # Sensitive
# ...
----
== See
* https://www.owasp.org/index.php/Top_10-2017_A3-Sensitive_Data_Exposure[OWASP Top 10 2017 Category A3] - Sensitive Data Exposure
* http://cwe.mitre.org/data/definitions/327.html[CWE-327] - Use of a Broken or Risky Cryptographic Algorithm
* https://www.sans.org/top25-software-errors/#cat3[SANS Top 25] - Porous Defenses