Mercurial Repositories > eric / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/eric7/Plugins/CheckerPlugins/CodeStyleChecker/Security/Checks/snmpSecurity.py	Tue Sep 13 20:00:55 2022 +0200
@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2022 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing checks for the insecure use of SNMP.
+"""
+
+#
+# This is a modified version of the one found in the bandit package.
+#
+# Original Copyright (c) 2018 SolarWinds, Inc.
+#
+# 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": [
+            (checkInsecureVersion, ("S508",)),
+            (checkWeakCryptography, ("S509",)),
+        ],
+    }
+
+
+def checkInsecureVersion(reportError, context, config):
+    """
+    Function to check for the use of insecure SNMP version like
+    v1, v2c.
+
+    @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 context.callFunctionNameQual == "pysnmp.hlapi.CommunityData" and (
+        context.checkCallArgValue("mpModel", 0)
+        or context.check_call_arg_value("mpModel", 1)
+    ):
+        # We called community data. Lets check our args
+        reportError(
+            context.node.lineno - 1,
+            context.node.col_offset,
+            "S508",
+            "M",
+            "H",
+        )
+
+
+def checkWeakCryptography(reportError, context, config):
+    """
+    Function to check for the use of insecure SNMP cryptography
+    (i.e. v3 using noAuthNoPriv).
+
+    @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 (
+        context.callFunctionNameQual == "pysnmp.hlapi.UsmUserData"
+        and context.callArgsCount < 3
+    ):
+        reportError(context.node.lineno - 1, context.node.col_offset, "S509", "M", "H")