A: posgresql-9.6 security update has been released for Debian GNU/Linux 9 LTS to address an issue where an uncontrolled search path could allow users to run arbitrary SQL functions with elevated priviledges when a superuser runs certain `CREATE EXTENSION' statements.

DLA 2331-1: posgresql-9.6 security update

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Debian LTS Advisory DLA-2331-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Emilio Pozuelo Monfort
August 17, 2020   https://wiki.debian.org/LTS
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Package : posgresql-9.6
Version : 9.6.19-0+deb9u1
CVE ID : CVE-2020-14350

Andres Freund found an issue in the PostgreSQL database system where an
uncontrolled search path could allow users to run arbitrary SQL functions
with elevated priviledges when a superuser runs certain `CREATE EXTENSION'
statements.

For Debian 9 stretch, this problem has been fixed in version
9.6.19-0+deb9u1.

We recommend that you upgrade your posgresql-9.6 packages.

For the detailed security status of posgresql-9.6 please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/posgresql-9.6

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS