Find routine privileges that the carrier of the privilege can in turn grant to others, i.e., the privileges have been given WITH GRANT OPTION. The number of privileges that can be passed on should be as small as possible.
Notes
There could be multiple routines with the same name but with different parameters in the same schema (overloading). Thus, for the unique identification of the routine it is necessary to present also its parameters in addition to the schema name and routine name. The query excludes privileges that have been given to superusers because they have the privilege in any case.
Type
Problem detection (Each row in the result could represent a flaw in the design)
SELECT rp.grantee, rp.specific_schema AS routine_schema, rp.routine_name,
pg_get_function_identity_arguments(translate(substring(rp.specific_name,'_[0-9]+$'),'_','')::int::oid) AS parameters,
rp.privilege_type
FROM information_schema.routine_privileges AS rp INNER JOIN information_schema.routines AS t
USING (specific_schema, specific_name)
WHERE rp.is_grantable='YES' AND rp.specific_schema <>ALL (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL)
AND NOT EXISTS (SELECT 1
FROM pg_catalog.pg_roles r
WHERE rolsuper=TRUE AND rp.grantee=r.rolname)
ORDER BY specific_schema, specific_name;
SQL statements that help generate fixes for the identified problem.
SQL Query to Generate Fix
Description
WITH grantable_privileges AS (
SELECT rp.grantee, rp.specific_schema AS routine_schema, rp.routine_name,
pg_get_function_identity_arguments(translate(substring(rp.specific_name,'_[0-9]+$'),'_','')::int::oid) AS parameters,
rp.privilege_type
FROM information_schema.routine_privileges AS rp INNER JOIN information_schema.routines AS t
USING (specific_schema, specific_name)
WHERE rp.is_grantable='YES' AND rp.specific_schema <>ALL (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL)
AND NOT EXISTS (SELECT 1
FROM pg_catalog.pg_roles r
WHERE rolsuper=TRUE AND rp.grantee=r.rolname))
SELECT format('REVOKE GRANT OPTION FOR ALL PRIVILEGES ON ROUTINE %1$I.%2$I(%3$s) FROM %4$I;', routine_schema, routine_name, parameters, grantee) AS statements
FROM grantable_privileges
ORDER BY routine_schema, routine_name;
Revoke WITH GRANT OPTION privilege.
Collections
This query belongs to the following collections:
Name
Description
Find problems automatically
Queries, that results point to problems in the database. Each query in the collection produces an initial assessment. However, a human reviewer has the final say as to whether there is a problem or not .
Categories
This query is classified under the following categories:
Name
Description
Security
Queries of this category provide information about the security measures.
User-defined routines
Queries of this category provide information about the user-defined routines