CVE-2024-33655
CVE-2024-33655
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 7.5 · High · EPSS 1.7% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
n/a
- Versions
- n/a: Affected
No fix published
unbound Debian:12
- Versions
- 1.17.1-2
- 1.17.1-2+deb12u1
- 1.17.1-2+deb12u2
- Affected ranges
- ECOSYSTEM: < 1.17.1-2+deb12u3
Update to 1.17.1-2+deb12u3
unbound Debian:13
- Affected ranges
- ECOSYSTEM: < 1.20.0-1
Update to 1.20.0-1
unbound Debian:14
- Affected ranges
- ECOSYSTEM: < 1.20.0-1
Update to 1.20.0-1
unbound Ubuntu:Pro:14.04:LTS
- Versions
- 1.4.20-1
- 1.4.21-1
- 1.4.21-1ubuntu1
- 1.4.21-1ubuntu2
- 1.4.22-1ubuntu1
- 1.4.22-1ubuntu2
- 1.4.22-1ubuntu3
- 1.4.22-1ubuntu4
- 1.4.22-1ubuntu4.14.04.1
- 1.4.22-1ubuntu4.14.04.2
- 1.4.22-1ubuntu4.14.04.3
- 1.4.22-1ubuntu4.14.04.3+esm1
- 1.4.22-1ubuntu4.14.04.3+esm2
- 1.4.22-1ubuntu4.14.04.3+esm3
- 1.4.22-1ubuntu4.14.04.3+esm4
- 1.4.22-1ubuntu4.14.04.3+esm5
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
unbound Ubuntu:Pro:16.04:LTS
- Versions
- 1.4.22-1ubuntu6
- 1.5.7-1ubuntu1
- 1.5.7-1ubuntu2
- 1.5.8-1ubuntu1
- 1.5.8-1ubuntu1.1
- 1.5.8-1ubuntu1.1+esm1
- 1.5.8-1ubuntu1.1+esm2
- 1.5.8-1ubuntu1.1+esm3
- 1.5.8-1ubuntu1.1+esm4
- 1.5.8-1ubuntu1.1+esm5
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
unbound Ubuntu:Pro:18.04:LTS
- Versions
- 1.6.5-1
- 1.6.7-1
- 1.6.7-1build1
- 1.6.7-1ubuntu1
- 1.6.7-1ubuntu2
- 1.6.7-1ubuntu2.1
- 1.6.7-1ubuntu2.2
- 1.6.7-1ubuntu2.3
- 1.6.7-1ubuntu2.4
- 1.6.7-1ubuntu2.5
- 1.6.7-1ubuntu2.6
- 1.6.7-1ubuntu2.6+esm2
- 1.6.7-1ubuntu2.6+esm3
- 1.6.7-1ubuntu2.6+esm4
- 1.6.7-1ubuntu2.6+esm5
- 1.6.7-1ubuntu2.6+esm6
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
unbound Ubuntu:20.04:LTS
- Versions
- 1.9.0-2ubuntu1
- 1.9.0-2ubuntu2
- 1.9.4-2
- 1.9.4-2ubuntu1
- 1.9.4-2ubuntu1.1
- 1.9.4-2ubuntu1.2
- 1.9.4-2ubuntu1.3
- 1.9.4-2ubuntu1.4
- 1.9.4-2ubuntu1.5
- Affected ranges
- ECOSYSTEM: < 1.9.4-2ubuntu1.6
Update to 1.9.4-2ubuntu1.6
unbound Ubuntu:22.04:LTS
- Versions
- 1.13.1-1ubuntu1
- 1.13.1-1ubuntu3
- 1.13.1-1ubuntu5
- 1.13.1-1ubuntu5.1
- 1.13.1-1ubuntu5.2
- 1.13.1-1ubuntu5.3
- 1.13.1-1ubuntu5.4
- Affected ranges
- ECOSYSTEM: < 1.13.1-1ubuntu5.5
Update to 1.13.1-1ubuntu5.5
unbound Ubuntu:24.04:LTS
- Versions
- 1.17.1-2
- 1.18.0-2ubuntu1
- 1.18.0-2ubuntu2
- 1.19.1-1ubuntu1
- 1.19.2-1ubuntu1
- 1.19.2-1ubuntu3
- Affected ranges
- ECOSYSTEM: < 1.19.2-1ubuntu3.1
Update to 1.19.2-1ubuntu3.1
Original sources
- 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
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QITY2QBX2OCBTZIXD2A5ES62STFIA4AL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TBXPRJ2Q235YUZKYDRWOSYNDFBJQWJ3/
- https://lists.debian.org/debian-lts-announce/2025/08/msg00019.html
- https://lists.fedoraproject.org/archives/list/[email protected]/message/QITY2QBX2OCBTZIXD2A5ES62STFIA4AL/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/3TBXPRJ2Q235YUZKYDRWOSYNDFBJQWJ3/
- https://nvd.nist.gov/vuln/detail/CVE-2024-33655