Is CVE-2021-23222 in the CISA KEV catalog?

No. CVE-2021-23222 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-23222?

CVE-2021-23222 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2021-23222?

CVE-2021-23222 has an EPSS score of 1.50% (71th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-23222?

Upgrade postgresql-13 on debian 11 to 13.5-0+deb11u1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-23222

MEDIUMEPSS 71th pctl

5.9

CVSS v3

NVD

Description

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.

CWE-522

How to fix

Remediation Available

postgresql-13Debian

Fixed in:13.5-0+deb11u1CVE-2021-23222

postgresql-10Ubuntu

Fixed in:10.19-0ubuntu0.18.04.1USN-5145-1

postgresql-12Ubuntu

Fixed in:12.9-0ubuntu0.20.04.1USN-5145-1

postgresql-9.5Ubuntu

Fixed in:9.5.25-0ubuntu0.16.04.1+esm3USN-5765-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

1.50%probability of exploitation in 30 days

71stpercentile

Elevated risk: more likely to be exploited than 71% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

postgresql.org

Third-Party Advisory2

Other references1

git.postgresql.org

Related Vulnerabilities

Other CWE-522 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-17662	Critical	9.8	97%	-	-
CVE-2020-29583	Critical	9.8	90%	KEV	-
CVE-2021-30116	Critical	10.0	86%	KEV + Ransom	Fix
CVE-2024-44000	Critical	9.8	83%	-	Fix
CVE-2018-9160	Critical	9.8	77%	-	-
CVE-2017-9248	Critical	9.8	75%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.