bpo-46251: Add 'Security Considerations' section to logging configura… (GH-30411)

vsajip · web-flow · commit 46c7a6566bca · 2022-01-06T22:35:08.000Z
diff --git a/Doc/library/logging.config.rst b/Doc/library/logging.config.rst
@@ -191,6 +191,20 @@ in :mod:`logging` itself) and defining handlers which are declared either in
    :func:`listen`.
 
 
+Security considerations
+^^^^^^^^^^^^^^^^^^^^^^^
+
+The logging configuration functionality tries to offer convenience, and in part this
+is done by offering the ability to convert text in configuration files into Python
+objects used in logging configuration - for example, as described in
+:ref:`logging-config-dict-userdef`. However, these same mechanisms (importing
+callables from user-defined modules and calling them with parameters from the
+configuration) could be used to invoke any code you like, and for this reason you
+should treat configuration files from untrusted sources with *extreme caution* and
+satisfy yourself that nothing bad can happen if you load them, before actually loading
+them.
+
+
 .. _logging-config-dictschema:
 
 Configuration dictionary schema
