--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/eric7/Plugins/CheckerPlugins/CodeStyleChecker/Security/Checks/hashlibInsecureFunctions.py Sun Feb 16 12:10:10 2025 +0100
@@ -0,0 +1,155 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2020 - 2025 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a check for use of insecure md4, md5, or sha1 hash
+functions in hashlib.
+"""
+
+from Security.SecurityDefaults import SecurityDefaults
+
+#
+# This is a modified version of the one found in the bandit package.
+#
+# Original Copyright 2014 Hewlett-Packard Development Company, L.P.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+
+def getChecks():
+ """
+ Public method to get a dictionary with checks handled by this module.
+
+ @return dictionary containing checker lists containing checker function and
+ list of codes
+ @rtype dict
+ """
+ return {
+ "Call": [
+ (checkHashlib, ("S331", "S332")),
+ ],
+ }
+
+
+def _hashlibFunc(reportError, context, func, config):
+ """
+ Function to check for use of insecure md4, md5, or sha1 hash functions
+ in hashlib if 'usedforsecurity' is not set to 'False'.
+
+ @param reportError function to be used to report errors
+ @type func
+ @param context security context object
+ @type SecurityContext
+ @param func name of the hash function
+ @type str
+ @param config dictionary with configuration data
+ @type dict
+ """
+ insecureHashes = (
+ [h.lower() for h in config["insecure_hashes"]]
+ if config and "insecure_hashes" in config
+ else SecurityDefaults["insecure_hashes"]
+ )
+
+ if isinstance(context.callFunctionNameQual, str):
+ keywords = context.callKeywords
+
+ if func in insecureHashes:
+ if keywords.get("usedforsecurity", "True") == "True":
+ reportError(
+ context.node.lineno - 1,
+ context.node.col_offset,
+ "S332",
+ "H",
+ "H",
+ func.upper(),
+ )
+ elif func == "new":
+ args = context.callArgs
+ name = args[0] if args else keywords.get("name")
+ if (
+ isinstance(name, str)
+ and name.lower() in insecureHashes
+ and keywords.get("usedforsecurity", "True") == "True"
+ ):
+ reportError(
+ context.node.lineno - 1,
+ context.node.col_offset,
+ "S332",
+ "H",
+ "H",
+ name.upper(),
+ )
+
+
+def _cryptCrypt(reportError, context, func, config):
+ """
+ Function to check for use of insecure md4, md5, sha or sha1 hash functions
+ in crypt.crypt().
+
+ @param reportError function to be used to report errors
+ @type func
+ @param context security context object
+ @type SecurityContext
+ @param func name of the hash function
+ @type str
+ @param config dictionary with configuration data
+ @type dict
+ """
+ insecureHashes = (
+ [h.lower() for h in config["insecure_hashes"]]
+ if config and "insecure_hashes" in config
+ else SecurityDefaults["insecure_hashes"]
+ )
+
+ args = context.callArgs
+ keywords = context.callKeywords
+
+ if func == "crypt":
+ name = args[1] if len(args) > 1 else keywords.get("salt")
+ if isinstance(name, str) and name in insecureHashes:
+ reportError(
+ context.node.lineno - 1,
+ context.node.col_offset,
+ "S331",
+ "M",
+ "H",
+ name.upper(),
+ )
+
+ elif func == "mksalt":
+ name = args[0] if args else keywords.get("method")
+ if isinstance(name, str) and name in insecureHashes:
+ reportError(
+ context.node.lineno - 1,
+ context.node.col_offset,
+ "S331",
+ "M",
+ "H",
+ name.upper(),
+ )
+
+
+def checkHashlib(reportError, context, config):
+ """
+ Function to check for use of insecure md4, md5, sha or sha1 hash functions
+ in hashlib.new().
+
+ @param reportError function to be used to report errors
+ @type func
+ @param context security context object
+ @type SecurityContext
+ @param config dictionary with configuration data
+ @type dict
+ """
+ if isinstance(context.callFunctionNameQual, str):
+ qualnameList = context.callFunctionNameQual.split(".")
+ func = qualnameList[-1]
+
+ if "hashlib" in qualnameList:
+ _hashlibFunc(reportError, context, func, config)
+ elif "crypt" in qualnameList and func in ("crypt", "mksalt"):
+ _cryptCrypt(reportError, context, func, config)
