Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://alas.aws.amazon.com/ALAS-2024-1934.html
- https://datatracker.ietf.org/doc/html/rfc1035
- https://github.com/NLnetLabs/unbound/commit/c3206f4568f60c486be6d165b1f2b5b254fe
- https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#version
- https://gitlab.isc.org/isc-projects/bind9/-/issues/4398
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://meterpreter.org/researchers-uncover-dnsbomb-a-new-pdos-attack-exploiting
- 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/c3206f4568f60c486be6d165b1f2b5b254fe
FAQ
What is CVE-2024-33655?
CVE-2024-33655 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2024-33655?
CVE-2024-33655 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-33655?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.