KLA11091
Multiple vulnerabilities in PostgreSQL

Multiple serious vulnerabilities have been found in PostgreSQL. Malicious users can exploit these vulnerabilities to bypass security restrictions and obtain sensitive information.

Below is a complete list of vulnerabilities:

1. An improper handling of empty passwords in libpq can be exploited remotely via an empty password to bypass security (authentication) restrictions;
2. An unspecified vulnerability related to the usage of the foreign data functionality can be exploited remotely to obtain sensitive information.

Technical details

Vulnerability (2) exists because all users (including those who did not have the USAGE permission on the associated foreign server) could see the options in the pg_user_mappings catalog.

PostgreSQL 9.2.x before 9.2.22
PostgreSQL 9.3.x before 9.3.18
PostgreSQL 9.4.x before 9.4.13
PostgreSQL 9.5.x before 9.5.8
PostgreSQL 9.6.x before 9.6.4

Update to the latest version
Download PostgreSQL

PostgreSQL Security Update Release