Loading HuntDB...
Hunt
Vulnerability Intelligence by wss.sh
Home Daily Briefings High Impact CVEs Recent Exploits KEV Catalog GitHub Advisories Latest Updates Security News
Sign In Sign Up

CVE-2023-4236

HIGH
Published 2023-09-20T12:32:16.631Z
Actions:

Expert Analysis

Professional remediation guidance

Get tailored security recommendations from our analyst team for CVE-2023-4236. We'll provide specific mitigation strategies based on your environment and risk profile.

CVSS Score

V3.1
7.5
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.335
Higher than 33.5% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

A flaw in the networking code handling DNS-over-TLS queries may cause `named` to terminate unexpectedly due to an assertion failure. This happens when internal data structures are incorrectly reused under significant DNS-over-TLS query load.
This issue affects BIND 9 versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

ISC

BIND 9

Affected Versions:

9.18.0 9.18.11-S1

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-jhh4-vhhc-xpjq

Advisory Details

A flaw in the networking code handling DNS-over-TLS queries may cause `named` to terminate unexpectedly due to an assertion failure. This happens when internal data structures are incorrectly reused under significant DNS-over-TLS query load. This issue affects BIND 9 versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-4236
WEB https://kb.isc.org/docs/cve-2023-4236
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/IPJLLTJCSDJJII7IIZPLTBQNWP7MZH7F
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/U35OARLQCPMVCBBPHWBXY5M6XJLD2TZ5
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/VSK5V4W4OHPM3JTJGWAQD6CZW7SFD75B
WEB https://security.netapp.com/advisory/ntap-20231013-0004
WEB https://www.debian.org/security/2023/dsa-5504
WEB http://www.openwall.com/lists/oss-security/2023/09/20/2

Advisory provided by GitHub Security Advisory Database. Published: September 20, 2023, Modified: November 3, 2023

References

https://kb.isc.org/docs/cve-2023-4236
http://www.openwall.com/lists/oss-security/2023/09/20/2
https://www.debian.org/security/2023/dsa-5504
https://lists.fedoraproject.org/archives/list/[email protected]/message/IPJLLTJCSDJJII7IIZPLTBQNWP7MZH7F/
https://lists.fedoraproject.org/archives/list/[email protected]/message/U35OARLQCPMVCBBPHWBXY5M6XJLD2TZ5/
https://security.netapp.com/advisory/ntap-20231013-0004/
https://lists.fedoraproject.org/archives/list/[email protected]/message/VSK5V4W4OHPM3JTJGWAQD6CZW7SFD75B/
Published: 2023-09-20T12:32:16.631Z
Last Modified: 2025-02-13T17:09:18.327Z
Copied to clipboard!