Cloud SQL escape to host

In GCP's case, they introduced a modification to the Cloud SQL's PostgreSQL engine allowing the role assigned to the
tenant (cloudsqlsuperuser) to arbitrarily change the ownership of a table to any user
or role in the database. Thus, an attacker could (1) create a new table, (2) create an
index function with a malicious payload, and (3) change the table owner to GCP’s superuser
role (cloudsqladmin). Next, by initiating an ANALYZE command, the malicious function is
executed with GCP’s superuser …

cloud escape host sql