PostgreSQL 'RESET ALL' Unauthorized Access Vulnerability

Summary
PostgreSQL is prone to an unauthorized-access vulnerability. Attackers can exploit this issue to reset special parameter settings only a root user should be able to modify. This may aid in further attacks. This issue affects versions prior to the following PostgreSQL versions: 7.4.29, 8.0.25 8.1.21, 8.2.17 8.3.11 8.4.4
Solution
Updates are available. Please see the references for more information.
References