QwikSec

Security Database

CVE

CWE

Training

CVE Database
/

CVE-2023-4236

Back to search

CVE-2023-4236

Published: Sep 20, 2023

Modified: Feb 13, 2025

PUBLISHED

CVSS v3.1

7.5

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.

VendorProductVersions

ISC

BIND 9

affected
9.18.0 - <= 9.18.18
affected
9.18.11-S1 - <= 9.18.18-S1

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

CVE-2023-4236
vendor-advisory

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now