A postgresql-9.6 security update has been released for Debian GNU/Linux 9 to fix a permission issue.
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Debian Security Advisory DSA-4622-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
February 13, 2020 https://www.debian.org/security/faq
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Package : postgresql-9.6
CVE ID : CVE-2020-1720
Tom Lane discovered that "ALTER ... DEPENDS ON EXTENSION" sub commands
in the PostgreSQL database did not perform authorisation checks.
For the oldstable distribution (stretch), this problem has been fixed
in version 9.6.17-0+deb9u1.
We recommend that you upgrade your postgresql-9.6 packages.
For the detailed security status of postgresql-9.6 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/postgresql-9.6
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
