The remote Debian host is missing a security-related update.
Several vulnerabilities have been found in PostgreSQL-9.4, a SQL database system. - CVE-2016-5423 Karthikeyan Jambu Rajaraman discovered that nested CASE-WHEN expressions are not properly evaluated, potentially leading to a crash or allowing to disclose portions of server memory. - CVE-2016-5424 Nathan Bossart discovered that special characters in database and role names are not properly handled, potentially leading to the execution of commands with superuser privileges, when a superuser executes pg_dumpall or other routine maintenance operations.
Upgrade the postgresql-9.4 packages. For the stable distribution (jessie), these problems have been fixed in version 9.4.9-0+deb8u1.