CVE-2024-33655

7.5 HIGH
Published: June 06, 2024 Modified: November 04, 2025
View on NVD

Description

The DNS protocol in RFC 1035 and updates allows remote attackers to cause a denial of service (resource consumption) by arranging for DNS queries to be accumulated for seconds, such that responses are later sent in a pulsing burst (which can be considered traffic amplification in some cases), aka the "DNSBomb" issue.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://alas.aws.amazon.com/ALAS-2024-1934.html
Source: cve@mitre.org
https://datatracker.ietf.org/doc/html/rfc1035
Source: cve@mitre.org
https://github.com/NLnetLabs/unbound/commit/c3206f4568f60c486be6d165b1f2b5b254fea3de
Source: cve@mitre.org
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-120
Source: cve@mitre.org
https://gitlab.isc.org/isc-projects/bind9/-/issues/4398
Source: cve@mitre.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TBXPRJ2Q235YUZKYDRWOSYNDFBJQWJ3/
Source: cve@mitre.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QITY2QBX2OCBTZIXD2A5ES62STFIA4AL/
Source: cve@mitre.org
https://meterpreter.org/researchers-uncover-dnsbomb-a-new-pdos-attack-exploiting-legitimate-dns-features/
Source: cve@mitre.org
https://nlnetlabs.nl/downloads/unbound/CVE-2024-33655.txt
Source: cve@mitre.org
https://nlnetlabs.nl/projects/unbound/security-advisories/
Source: cve@mitre.org
https://sp2024.ieee-security.org/accepted-papers.html
Source: cve@mitre.org
https://www.isc.org/blogs/2024-dnsbomb/
Source: cve@mitre.org
https://alas.aws.amazon.com/ALAS-2024-1934.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://datatracker.ietf.org/doc/html/rfc1035
Source: af854a3a-2127-422b-91ae-364da2661108
https://github.com/NLnetLabs/unbound/commit/c3206f4568f60c486be6d165b1f2b5b254fea3de
Source: af854a3a-2127-422b-91ae-364da2661108
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-120
Source: af854a3a-2127-422b-91ae-364da2661108
https://gitlab.isc.org/isc-projects/bind9/-/issues/4398
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/08/msg00019.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TBXPRJ2Q235YUZKYDRWOSYNDFBJQWJ3/
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QITY2QBX2OCBTZIXD2A5ES62STFIA4AL/
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3TBXPRJ2Q235YUZKYDRWOSYNDFBJQWJ3/
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QITY2QBX2OCBTZIXD2A5ES62STFIA4AL/
Source: af854a3a-2127-422b-91ae-364da2661108
https://meterpreter.org/researchers-uncover-dnsbomb-a-new-pdos-attack-exploiting-legitimate-dns-features/
Source: af854a3a-2127-422b-91ae-364da2661108
https://nlnetlabs.nl/downloads/unbound/CVE-2024-33655.txt
Source: af854a3a-2127-422b-91ae-364da2661108
https://nlnetlabs.nl/projects/unbound/security-advisories/
Source: af854a3a-2127-422b-91ae-364da2661108
https://sp2024.ieee-security.org/accepted-papers.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.isc.org/blogs/2024-dnsbomb/
Source: af854a3a-2127-422b-91ae-364da2661108

27 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
3.9%
88th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-400

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