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CVE-2023-50868

Description

The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.

POC

Reference

No PoCs from references.

Github

- https://github.com/ARPSyndicate/cve-scores

- https://github.com/Atamik03/API-calc-dz

- https://github.com/GitHubForSnap/knot-resolver-gael

- https://github.com/Goethe-Universitat-Cybersecurity/NSEC3-Encloser-Attack

- https://github.com/GrigGM/05-virt-04-docker-hw

- https://github.com/Javeria-Motiwala/cve-scanner

- https://github.com/benichmt1/copa-docker-scout

- https://github.com/fkie-cad/nvd-json-data-feeds

- https://github.com/fokypoky/places-list

- https://github.com/h4ckm1n-dev/report-test

- https://github.com/hackingyseguridad/dnssec

- https://github.com/marklogic/marklogic-docker

- https://github.com/michael-bey/copa-docker-scout

- https://github.com/nsec-submission/nsec3-submission

- https://github.com/runwhen-contrib/helm-charts