What’s Vulnerable › Vulnerabilities

CVE-2021-23214

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-03-04 · updated 2026-06-17
• Weakness: CWE-89

Description

When the server is configured to use trust authentication with a clientcert requirement or to use cert authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of SSL certificate verification and encryption.

Affected products

• Fedoraproject Fedora: 34, 35
• PostgreSQL: before 9.6.24; from 10.0 before 10.19; from 11.0 before 11.14; from 12.0 before 12.9; from 13.0 before 13.5; 14.0 — fixed in 10.19, 11.14, 12.9, 13.5, 9.6.24
• Red Hat Enterprise Linux: 8.0
• RedHat Enterprise Linux For Ibm Z Systems: 8.0
• RedHat Enterprise Linux For Power Little Endian: 8.0
• RedHat Software Collections: 1.0

How to fix

Upgrade to a fixed version: PostgreSQL 10.19, 11.14, 12.9, 13.5. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2022666
• https://git.postgresql.org/gitweb/?p=postgresql.git%3Ba=commit%3Bh=28e24125541545483093819efae9bca603441951
• https://github.com/postgres/postgres/commit/28e24125541545483093819efae9bca603441951
• https://security.gentoo.org/glsa/202211-04
• https://www.postgresql.org/support/security/CVE-2021-23214/
• https://bugzilla.redhat.com/show_bug.cgi?id=2022666
• https://git.postgresql.org/gitweb/?p=postgresql.git%3Ba=commit%3Bh=28e24125541545483093819efae9bca603441951
• https://github.com/postgres/postgres/commit/28e24125541545483093819efae9bca603441951
• https://security.gentoo.org/glsa/202211-04
• https://www.postgresql.org/support/security/CVE-2021-23214/

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