Description
PostgreSQL Anonymizer contains a vulnerability that allows a user to gain superuser privileges by creating a table and placing malicious code inside a column identifier. If a superuser calls the k-anonymity function, the malicious code is executed with superuser privileges. The risk is higher with PostgreSQL 14 or with instances upgraded from PostgreSQL 14 or a prior version. With PostgreSQL 15 and later, the creation permission on the public schema is revoked by default and this exploit can only be achieved by a user who was explicitly granted the CREATE TABLE privilege. The problem is resolved in PostgreSQL Anonymizer 3.1.0 and further versions
Problem types
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Product status
1 (semver) before 3.1.0
Credits
The PostgreSQL Anonymizer project thanks user 'Buut' for reporting this problem.
References
gitlab.com/dalibo/postgresql_anonymizer/-/issues/640