7.5
HIGH
CVE-2024-33655
Apache DNS Protocol Denial of Service
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.

INFO

Published Date :

June 6, 2024, 5:15 p.m.

Last Modified :

Nov. 21, 2024, 9:17 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2024-33655 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Nlnetlabs unbound
1 Technitium dnsserver
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2024-33655.

URL Resource
https://alas.aws.amazon.com/ALAS-2024-1934.html
https://datatracker.ietf.org/doc/html/rfc1035
https://github.com/NLnetLabs/unbound/commit/c3206f4568f60c486be6d165b1f2b5b254fea3de
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-120
https://gitlab.isc.org/isc-projects/bind9/-/issues/4398
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TBXPRJ2Q235YUZKYDRWOSYNDFBJQWJ3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QITY2QBX2OCBTZIXD2A5ES62STFIA4AL/
https://meterpreter.org/researchers-uncover-dnsbomb-a-new-pdos-attack-exploiting-legitimate-dns-features/
https://nlnetlabs.nl/downloads/unbound/CVE-2024-33655.txt
https://nlnetlabs.nl/projects/unbound/security-advisories/
https://sp2024.ieee-security.org/accepted-papers.html
https://www.isc.org/blogs/2024-dnsbomb/
https://alas.aws.amazon.com/ALAS-2024-1934.html
https://datatracker.ietf.org/doc/html/rfc1035
https://github.com/NLnetLabs/unbound/commit/c3206f4568f60c486be6d165b1f2b5b254fea3de
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-120
https://gitlab.isc.org/isc-projects/bind9/-/issues/4398
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TBXPRJ2Q235YUZKYDRWOSYNDFBJQWJ3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QITY2QBX2OCBTZIXD2A5ES62STFIA4AL/
https://meterpreter.org/researchers-uncover-dnsbomb-a-new-pdos-attack-exploiting-legitimate-dns-features/
https://nlnetlabs.nl/downloads/unbound/CVE-2024-33655.txt
https://nlnetlabs.nl/projects/unbound/security-advisories/
https://sp2024.ieee-security.org/accepted-papers.html
https://www.isc.org/blogs/2024-dnsbomb/

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-33655 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-33655 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://alas.aws.amazon.com/ALAS-2024-1934.html
    Added Reference https://datatracker.ietf.org/doc/html/rfc1035
    Added Reference https://github.com/NLnetLabs/unbound/commit/c3206f4568f60c486be6d165b1f2b5b254fea3de
    Added Reference https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-120
    Added Reference https://gitlab.isc.org/isc-projects/bind9/-/issues/4398
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TBXPRJ2Q235YUZKYDRWOSYNDFBJQWJ3/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QITY2QBX2OCBTZIXD2A5ES62STFIA4AL/
    Added Reference https://meterpreter.org/researchers-uncover-dnsbomb-a-new-pdos-attack-exploiting-legitimate-dns-features/
    Added Reference https://nlnetlabs.nl/downloads/unbound/CVE-2024-33655.txt
    Added Reference https://nlnetlabs.nl/projects/unbound/security-advisories/
    Added Reference https://sp2024.ieee-security.org/accepted-papers.html
    Added Reference https://www.isc.org/blogs/2024-dnsbomb/
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Aug. 22, 2024

    Action Type Old Value New Value
    Added CWE CISA-ADP CWE-400
    Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE Modified by [email protected]

    Jun. 10, 2024

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TBXPRJ2Q235YUZKYDRWOSYNDFBJQWJ3/ [No types assigned]
  • CVE Modified by [email protected]

    Jun. 10, 2024

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QITY2QBX2OCBTZIXD2A5ES62STFIA4AL/ [No types assigned]
  • CVE Received by [email protected]

    Jun. 06, 2024

    Action Type Old Value New Value
    Added 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.
    Added Reference MITRE https://datatracker.ietf.org/doc/html/rfc1035 [No types assigned]
    Added Reference MITRE https://nlnetlabs.nl/projects/unbound/security-advisories/ [No types assigned]
    Added Reference MITRE https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-120 [No types assigned]
    Added Reference MITRE https://www.isc.org/blogs/2024-dnsbomb/ [No types assigned]
    Added Reference MITRE https://nlnetlabs.nl/downloads/unbound/CVE-2024-33655.txt [No types assigned]
    Added Reference MITRE https://github.com/NLnetLabs/unbound/commit/c3206f4568f60c486be6d165b1f2b5b254fea3de [No types assigned]
    Added Reference MITRE https://alas.aws.amazon.com/ALAS-2024-1934.html [No types assigned]
    Added Reference MITRE https://meterpreter.org/researchers-uncover-dnsbomb-a-new-pdos-attack-exploiting-legitimate-dns-features/ [No types assigned]
    Added Reference MITRE https://sp2024.ieee-security.org/accepted-papers.html [No types assigned]
    Added Reference MITRE https://gitlab.isc.org/isc-projects/bind9/-/issues/4398 [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-33655 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2024-33655 weaknesses.

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability