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Fencer Vulns
medium 5.9

CVE-2021-23222 json

A man-in-the-middle attacker can inject false responses to the client's first few queries, despite the use of SSL certificate verification…

published 2022-03-02 4 y ago modified 2026-09-08 2 mo ago also BIT-postgresql-2021-23222 , EUVD-2021-10324 , JLSEC-2026-30

cvss
5.9
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

A man-in-the-middle attacker can inject false responses to the client's first few queries, despite the use of SSL certificate verification and encryption.

Patch / fix

  • bitnami postgresql 9.6.24, 10.19.0, 11.14.0, 12.9.0, 13.5.0, 14.0.1
  • julia LibPQ_jll 14.1.0+0
  • postgresql postgresql 9.6.24, 10.19, 11.14, 12.9, 13.5
  • postgresql-13 Debian 11 13.5-0+deb11u1

debian advisories DEBIAN-CVE-2021-23222

  • postgresql-10 Ubuntu 18.04 LTS 10.19-0ubuntu0.18.04.1
  • postgresql-12 Ubuntu 20.04 LTS 12.9-0ubuntu0.20.04.1
  • postgresql-9.5 Ubuntu Pro 16.04 LTS 9.5.25-0ubuntu0.16.04.1+esm3

ubuntu advisories UBUNTU-CVE-2021-23222

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

  • libpq RHEL 8 13.5-1.el8
  • rh-postgresql13-postgresql RHEL 3 SOFTWARE_COLLECTIONS 13.5-1.el7
  • rh-postgresql13-postgresql-libs RHEL 3 SOFTWARE_COLLECTIONS 13.5-1.el7
  • rh-postgresql13-postgresql-test RHEL 3 SOFTWARE_COLLECTIONS 13.5-1.el7
  • rh-postgresql13-postgresql-pltcl RHEL 3 SOFTWARE_COLLECTIONS 13.5-1.el7
  • rh-postgresql13-postgresql-plperl RHEL 3 SOFTWARE_COLLECTIONS 13.5-1.el7
  • rh-postgresql13-postgresql-server RHEL 3 SOFTWARE_COLLECTIONS 13.5-1.el7
  • rh-postgresql13-postgresql-contrib RHEL 3 SOFTWARE_COLLECTIONS 13.5-1.el7

red hat advisories RHSA-2022:1891RHSA-2021:5179RHSA-2021:5197

  • postgresql12 SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +3 more 12.12-150100.3.33.1
  • postgresql10 SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 10.22-150000.4.42.1
  • postgresql SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 12.0.1-150000.8.19.1
  • postgresql10 SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +6 more 10.19-8.41.1
  • postgresql13 SLE Module for Server Applications 15 SP3, SLE Module for Server Applications 15 SP2, SLE Module for Package Hub 15 SP3 +3 more 13.5-5.22.1
  • postgresql10 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +11 more 10.19-4.22.1
  • postgresql12 SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 12.9-3.21.1
  • postgresql14 SLE Module for Server Applications 15 SP3, SLE Module for Server Applications 15 SP2, SLE Module for Package Hub 15 SP3 +3 more 14.1-5.6.1

suse advisories SUSE-SU-2022:2958-1SUSE-SU-2022:2893-1SUSE-SU-2021:4058-1SUSE-SU-2021:3762-1SUSE-SU-2021:3761-1SUSE-SU-2021:3760-1

  • postgresql17 openSUSE Tumbleweed 17.6-2.1
  • postgresql16 openSUSE Tumbleweed 16.4-1.1
  • postgresql10 openSUSE Tumbleweed 10.19-1.1
  • postgresql11 openSUSE Tumbleweed 11.14-1.1
  • postgresql12 openSUSE Tumbleweed 12.9-1.1
  • postgresql13 openSUSE Tumbleweed 13.5-1.1
  • postgresql14 openSUSE Tumbleweed 14.1-1.1
  • postgresql15 openSUSE Tumbleweed 15.4-2.1

opensuse advisories openSUSE-SU-2025:15580-1openSUSE-SU-2024:14360-1openSUSE-SU-2024:11625-1openSUSE-SU-2024:11626-1openSUSE-SU-2024:11627-1openSUSE-SU-2024:11628-1

  • libpq AlmaLinux 8 13.5-1.el8

almalinux advisories ALSA-2022:1891

  • libpq Rocky Linux 8 13.5-1.el8

rocky linux advisories RLSA-2022:1891

  • postgresql Alpine 3.12, Alpine 3.11 12.9-r0
  • postgresql Alpine 3.14, Alpine 3.13 13.5-r0
  • postgresql12 Alpine 3.18, Alpine 3.17, Alpine 3.16 +1 more 12.9-r0
  • postgresql13 Alpine 3.19, Alpine 3.18, Alpine 3.17 +2 more 13.5-r0
  • postgresql14 Alpine 3.20, Alpine 3.19, Alpine 3.18 +3 more 14.1-r0
  • postgresql15 Alpine 3.20, Alpine 3.19, Alpine 3.18 +1 more 14.1-r0

alpine advisories ALPINE-CVE-2021-23222

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • postgresql CBL-Mariner 2.0 14.2-1

azure linux advisories AZL-8901

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

  • postgresql Arch Linux 13.5-1
  • postgresql-libs Arch Linux 13.5-1

arch linux advisories AVG-2547

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-2021-23222 updated cvss 3.7

postgresql: libpq processes unencrypted bytes from man-in-the-middle

  • Red Hat Enterprise Linux 5 postgresql Red Hat Enterprise Linux 6 postgresql, postgresql-libs, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, +2 more Red Hat Enterprise Linux 7 postgresql, postgresql-libs, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, +3 more
    affected: no fix planned “Out of support scope”
  • Red Hat Software Collections rh-postgresql10-postgresql, rh-postgresql10-postgresql-libs, rh-postgresql10-postgresql-test, rh-postgresql10-postgresql-pltcl, rh-postgresql10-postgresql-plperl, rh-postgresql10-postgresql-server, +5 more
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 8) libpq 13.5-1.el8
    fixed: vendor fix RHSA-2022:1891
  • Red Hat Software Collections for RHEL Workstation(v. 7) rh-postgresql12-postgresql 12.9-1.el7, rh-postgresql13-postgresql 13.5-1.el7, rh-postgresql12-postgresql-libs 12.9-1.el7, rh-postgresql12-postgresql-test 12.9-1.el7, rh-postgresql13-postgresql-libs 13.5-1.el7, rh-postgresql13-postgresql-test 13.5-1.el7, +17 more Red Hat Software Collections for RHEL(v. 7) rh-postgresql12-postgresql 12.9-1.el7, rh-postgresql13-postgresql 13.5-1.el7, rh-postgresql12-postgresql-libs 12.9-1.el7, rh-postgresql12-postgresql-test 12.9-1.el7, rh-postgresql13-postgresql-libs 13.5-1.el7, rh-postgresql13-postgresql-test 13.5-1.el7, +17 more
    fixed: vendor fix RHSA-2021:5197
  • Red Hat build of Debezium 1 postgresql Red Hat build of Quarkus postgresql Red Hat Decision Manager 7 postgresql Red Hat Enterprise Linux 8 pgaudit, pg_repack, postgresql, postgresql-test, postgresql-pltcl, postgresql-plperl, +7 more Red Hat Enterprise Linux 9 libpq, postgresql, postgresql-test, postgresql-pltcl, postgresql-plperl, postgresql-server, +5 more Red Hat Fuse 7 postgresql
    +6 more products
    Red Hat Integration Camel K 1 postgresql Red Hat Integration Camel Quarkus 1 postgresql Red Hat Integration Service Registry postgresql Red Hat JBoss Fuse 6 postgresql Red Hat JBoss Operations Network 3 postgresql Red Hat Process Automation 7 postgresql
    not affected: vulnerable code not present

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

1.50% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N
OSV 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
bitnami postgresql
>=9.6.0, <9.6.24
>=10.0.0, <10.19.0
>=11.0.0, <11.14.0
>=12.0.0, <12.9.0
>=13.0.0, <13.5.0
>=14.0.0, <14.0.1
9.6.24
10.19.0
11.14.0
12.9.0
13.5.0
14.0.1
julia LibPQ_jll
<14.1.0+0
14.1.0+0

Affected products

  • n/a postgresql

Classification

Weakness
  • CWE-522 Insufficiently Protected Credentials
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.