Find column 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
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 cp.grantee, cp.table_schema, cp.table_name, cp.column_name, t.table_type, cp.privilege_type
FROM information_schema.column_privileges AS cp INNER JOIN information_schema.tables AS t
ON t.table_schema=cp.table_schema AND t.table_name=cp.table_name
WHERE cp.is_grantable='YES' AND cp.table_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 cp.grantee=r.rolname)
ORDER BY table_schema, table_name, privilege_type;
SQL statements that help generate fixes for the identified problem.
SQL Query to Generate Fix
Description
WITH grantable_privileges AS (SELECT cp.grantee, cp.table_schema, cp.table_name, cp.column_name, t.table_type, cp.privilege_type
FROM information_schema.column_privileges AS cp INNER JOIN information_schema.tables AS t
ON t.table_schema=cp.table_schema AND t.table_name=cp.table_name
WHERE cp.is_grantable='YES' AND cp.table_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 cp.grantee=r.rolname))
SELECT format('REVOKE GRANT OPTION FOR %1$s (%2$s) ON TABLE %3$I.%4$I FROM %5$I;', privilege_type, column_name, table_schema, table_name, grantee) AS statements
FROM grantable_privileges
ORDER BY table_schema, table_name, privilege_type;
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.