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CVE-2024-33655

Date: June 5, 2024

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.

Language: C

Severity Score

Related Resources (16)

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

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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