VULNERABILITY INTELLIGENCE
CVE-2023-50387
CVSS score7.5 HIGH
EPSS probability99.99%
CISA KEVNot currently listed
Published2024-02-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
Weakness classification
- nvd@nist.gov: CWE-770
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-770
Primary references
- cve@mitre.org — Mailing List
- cve@mitre.org — Mailing List
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Issue Tracking
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Patch
- cve@mitre.org — Third Party Advisory, VDB Entry
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org — Mailing List
- cve@mitre.org