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Fencer Vulns
high 8.3

CVE-2016-5423 json

PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 allow remote authenticated u…

published 2016-12-09 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-6368

cvss
8.3
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.0%
EPSS 6.0% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 allow remote authenticated users to cause a denial of service (NULL pointer dereference and server crash), obtain sensitive memory information, or possibly execute arbitrary code via (1) a CASE expression within the test value subexpression of another CASE or (2) inlining of an SQL function that implements the equality operator used for a CASE expression involving values of different types.

Patch / fix

  • postgresql-9.1 Ubuntu 14.04 LTS 9.1.23-0ubuntu0.14.04
  • postgresql-9.3 Ubuntu 14.04 LTS 9.3.14-0ubuntu0.14.04
  • postgresql-9.5 Ubuntu 16.04 LTS 9.5.4-0ubuntu0.16.04

ubuntu advisories UBUNTU-CVE-2016-5423

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • rh-postgresql95-postgresql network satellite managed db 5.7, network satellite 5.7 9.5.7-2.el6
  • spacewalk-pxt network satellite 5.7 2.3.2-35.el6sat
  • spacewalk-web network satellite managed db 5.7, network satellite 5.7 2.3.2-35.el6sat
  • spacewalk-base network satellite 5.7 2.3.2-35.el6sat
  • spacewalk-html network satellite 5.7 2.3.2-35.el6sat
  • spacewalk-dobby network satellite managed db 5.7, network satellite 5.7 2.3.2-35.el6sat
  • spacewalk-grail network satellite 5.7 2.3.2-35.el6sat
  • spacewalk-utils network satellite 5.7 2.3.2-32.el6sat

red hat advisories RHSA-2017:2425RHSA-2016:2606RHSA-2016:1821RHSA-2016:1781RHSA-2016:1820

  • postgresql94 SLES for SAP 11 SP4, SLES 11 SP4, Manager 2.1 9.4.9-0.19.1
  • postgresql94-libs SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 9.4.9-0.19.1
  • postgresql94 SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 9.4.9-14.1
  • postgresql94-libs SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 9.4.9-14.1
  • postgresql93 SLES for SAP 12, SLES 12-LTSS 9.3.14-19.2

suse advisories SUSE-SU-2016:2418-1SUSE-SU-2016:2415-1SUSE-SU-2016:2414-1

  • postgresql94 openSUSE Tumbleweed 9.4.10-1.1
  • postgresql93 openSUSE Tumbleweed 9.3.15-1.1
  • postgresql95 openSUSE Tumbleweed 9.5.4-1.2

opensuse advisories openSUSE-SU-2024:10030-1openSUSE-SU-2024:10256-1openSUSE-SU-2024:10273-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-5423 updated cvss 8.5

postgresql: CASE/WHEN with inlining can cause untrusted pointer dereference

  • Red Hat CloudForms Management Engine 5 postgresql, postgresql92-postgresql
    affected: no fix available
  • Red Hat Enterprise Linux 5 postgresql, postgresql84 Red Hat Enterprise Linux 6 postgresql, postgresql-libs, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, +2 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) postgresql 9.2.18-1.el7, postgresql-libs 9.2.18-1.el7 Red Hat Enterprise Linux Client Optional (v. 7) postgresql 9.2.18-1.el7, postgresql-test 9.2.18-1.el7, postgresql-pltcl 9.2.18-1.el7, postgresql-plperl 9.2.18-1.el7, postgresql-server 9.2.18-1.el7, postgresql-contrib 9.2.18-1.el7, +2 more Red Hat Enterprise Linux ComputeNode (v. 7) postgresql 9.2.18-1.el7, postgresql-libs 9.2.18-1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) postgresql 9.2.18-1.el7, postgresql-test 9.2.18-1.el7, postgresql-pltcl 9.2.18-1.el7, postgresql-plperl 9.2.18-1.el7, postgresql-server 9.2.18-1.el7, postgresql-contrib 9.2.18-1.el7, +2 more Red Hat Enterprise Linux Server (v. 7) postgresql 9.2.18-1.el7, postgresql-libs 9.2.18-1.el7, postgresql-test 9.2.18-1.el7, postgresql-pltcl 9.2.18-1.el7, postgresql-plperl 9.2.18-1.el7, postgresql-server 9.2.18-1.el7, +2 more Red Hat Enterprise Linux Server Optional (v. 7) postgresql-upgrade 9.2.18-1.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) postgresql 9.2.18-1.el7, postgresql-libs 9.2.18-1.el7, postgresql-test 9.2.18-1.el7, postgresql-pltcl 9.2.18-1.el7, postgresql-plperl 9.2.18-1.el7, postgresql-server 9.2.18-1.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) postgresql-upgrade 9.2.18-1.el7
    fixed: vendor fix RHSA-2016:2606
  • Red Hat Satellite 5.7 (RHEL v.6) spacewalk-pxt 2.3.2-35.el6sat, spacewalk-web 2.3.2-35.el6sat, spacewalk-base 2.3.2-35.el6sat, spacewalk-html 2.3.2-35.el6sat, spacewalk-dobby 2.3.2-35.el6sat, spacewalk-grail 2.3.2-35.el6sat, +29 more Red Hat Satellite Managed DB 5.7 (RHEL v.6) spacewalk-web 2.3.2-35.el6sat, spacewalk-dobby 2.3.2-35.el6sat, rh-postgresql95-runtime 2.2-3.el6, rh-postgresql95-postgresql 9.5.7-2.el6, spacewalk-base-minimal 2.3.2-35.el6sat, spacewalk-postgresql-server 9.5-1.el6sat, +5 more
    fixed: vendor fix RHSA-2017:2425
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) postgresql92-postgresql 9.2.18-1.el6, rh-postgresql94-postgresql 9.4.9-1.el6, rh-postgresql95-postgresql 9.5.4-1.el6, postgresql92-postgresql-libs 9.2.18-1.el6, postgresql92-postgresql-test 9.2.18-1.el6, postgresql92-postgresql-pltcl 9.2.18-1.el6, +20 more Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) postgresql92-postgresql 9.2.18-1.el7, rh-postgresql94-postgresql 9.4.9-1.el7, rh-postgresql95-postgresql 9.5.4-1.el7, postgresql92-postgresql-libs 9.2.18-1.el7, postgresql92-postgresql-test 9.2.18-1.el7, postgresql92-postgresql-pltcl 9.2.18-1.el7, +20 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6) postgresql92-postgresql 9.2.18-1.el6, rh-postgresql94-postgresql 9.4.9-1.el6, rh-postgresql95-postgresql 9.5.4-1.el6, postgresql92-postgresql-libs 9.2.18-1.el6, postgresql92-postgresql-test 9.2.18-1.el6, postgresql92-postgresql-pltcl 9.2.18-1.el6, +20 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) postgresql92-postgresql 9.2.18-1.el6, rh-postgresql94-postgresql 9.4.9-1.el6, rh-postgresql95-postgresql 9.5.4-1.el6, postgresql92-postgresql-libs 9.2.18-1.el6, postgresql92-postgresql-test 9.2.18-1.el6, postgresql92-postgresql-pltcl 9.2.18-1.el6, +20 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1) postgresql92-postgresql 9.2.18-1.el7, rh-postgresql94-postgresql 9.4.9-1.el7, rh-postgresql95-postgresql 9.5.4-1.el7, postgresql92-postgresql-libs 9.2.18-1.el7, postgresql92-postgresql-test 9.2.18-1.el7, postgresql92-postgresql-pltcl 9.2.18-1.el7, +20 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2) postgresql92-postgresql 9.2.18-1.el7, rh-postgresql94-postgresql 9.4.9-1.el7, rh-postgresql95-postgresql 9.5.4-1.el7, postgresql92-postgresql-libs 9.2.18-1.el7, postgresql92-postgresql-test 9.2.18-1.el7, postgresql92-postgresql-pltcl 9.2.18-1.el7, +20 more
    +2 more products
    Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) postgresql92-postgresql 9.2.18-1.el6, rh-postgresql94-postgresql 9.4.9-1.el6, rh-postgresql95-postgresql 9.5.4-1.el6, postgresql92-postgresql-libs 9.2.18-1.el6, postgresql92-postgresql-test 9.2.18-1.el6, postgresql92-postgresql-pltcl 9.2.18-1.el6, +20 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) postgresql92-postgresql 9.2.18-1.el7, rh-postgresql94-postgresql 9.4.9-1.el7, rh-postgresql95-postgresql 9.5.4-1.el7, postgresql92-postgresql-libs 9.2.18-1.el7, postgresql92-postgresql-test 9.2.18-1.el7, postgresql92-postgresql-pltcl 9.2.18-1.el7, +20 more
    fixed: vendor fix RHSA-2016:1820

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.96% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 8.3 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.