PostgreSQL Improper Access Control Vulnerability - CVE-2019-10128

A vulnerability was found in postgresql versions 11.x prior to 11.3. The Windows installer for EnterpriseDB-supplied PostgreSQL does not lock down the ACL of the binary installation directory or the ACL of the data directory it keeps the inherited ACL. In the default configuration this allows a local attacker to read arbitrary data directory files essentially bypassing database-imposed read access limitations. In plausible non-default configurations an attacker having both an unprivileged Windows account and an unprivileged PostgreSQL account can cause the PostgreSQL service account to execute arbitrary code.