Resource Exhaustion Affecting unbound-libs package, versions *
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Test your applications- Snyk ID SNYK-CENTOS8-UNBOUNDLIBS-6833748
- published 10 May 2024
- disclosed 9 May 2024
Introduced: 9 May 2024
CVE-2024-33655 Open this link in a new tabHow to fix?
There is no fixed version for Centos:8 unbound-libs.
NVD Description
Note: Versions mentioned in the description apply only to the upstream unbound-libs package and not the unbound-libs package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2024-33655
- 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://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://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/