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CVE-2024-33655

Published: Jun 6, 2024

Modified: Nov 4, 2025

PUBLISHED

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://datatracker.ietf.org/doc/html/rfc1035

https://nlnetlabs.nl/projects/unbound/security-advisories/

https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version-120

https://www.isc.org/blogs/2024-dnsbomb/

https://nlnetlabs.nl/downloads/unbound/CVE-2024-33655.txt

https://github.com/NLnetLabs/unbound/commit/c3206f4568f60c486be6d165b1f2b5b254fea3de

https://alas.aws.amazon.com/ALAS-2024-1934.html

https://meterpreter.org/researchers-uncover-dnsbomb-a-new-pdos-attack-exploiting-legitimate-dns-features/

https://sp2024.ieee-security.org/accepted-papers.html

https://gitlab.isc.org/isc-projects/bind9/-/issues/4398

FEDORA-2024-9df760819c

vendor-advisory

FEDORA-2024-68626e0eb5

vendor-advisory

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