CVE-2023-4236 Vulnerability Details

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CVE-2023-4236 Metadata Quick Info

CVE Published: 20/09/2023 | CVE Updated: 02/08/2024 | CVE Year: 2023
Source: isc | Vendor: ISC | Product: BIND 9
Status : PUBLISHED

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CVE-2023-4236 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.

Metrics

CVSS Version: 3.1 | Base Score: 7.5 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

l➤ Exploitability Metrics:
    Attack Vector (AV)* NETWORK
    Attack Complexity (AC)* LOW
    Privileges Required (PR)* NONE
    User Interaction (UI)* NONE
    Scope (S)* UNCHANGED

l➤ Impact Metrics:
    Confidentiality Impact (C)* NONE
    Integrity Impact (I)* NONE
    Availability Impact (A)* HIGH

Weakness Enumeration (CWE)

CWE-ID:
CWE Name:
Source: ISC

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-ID:
CAPEC Description: A `named` instance vulnerable to this flaw may terminate unexpectedly when subjected to significant DNS-over-TLS query load. This flaw does not affect DNS-over-HTTPS code, as that uses a different TLS implementation.


Source: NVD (National Vulnerability Database).