GCVE-110-MAGEIA-2021-121

A user having an UPDATE privilege on a partitioned table but lacking the SELECT privilege on some column may be able to acquire denied-column values from an error message (CVE-2021-3393). A user having a SELECT privilege on an individual column can craft a special query that returns all columns of the table. Additionally, a stored view that uses column-level privileges will have incomplete column-usage bitmaps. In installations that depend on column-level permissions for security, it is recommended to execute CREATE OR REPLACE on all user-defined views to force them to be re-parsed (CVE-2021-20229). PostgreSQL 11 was only affected by CVE-2021-3393 and both PostgreSQL 11 and 13 were affected by CVE-2021-20229. PostgreSQL 9.6 was updated to fix bugs.