cve/2023/CVE-2023-50387.md

CVE-2023-50387

Description

Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.

POC

Reference

• https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/

Github

• https://github.com/GitHubForSnap/knot-resolver-gael
• https://github.com/GrigGM/05-virt-04-docker-hw
• https://github.com/fkie-cad/nvd-json-data-feeds
• https://github.com/fokypoky/places-list
• https://github.com/giterlizzi/secdb-feeds
• https://github.com/hackingyseguridad/dnssec
• https://github.com/knqyf263/CVE-2023-50387
• https://github.com/marklogic/marklogic-docker
• https://github.com/nomi-sec/PoC-in-GitHub