CVE-2023-2829

CVSS 3.1 Score 7.5 of 10 (high)

Details

Published Jun 21, 2023
Updated: Jul 3, 2023

Summary

CVE-2023-2829 is a vulnerability affecting BIND 9 DNS servers. When `named` is configured as a DNSSEC-validating recursive resolver with the "Aggressive Use of DNSSEC-Validated Cache" option enabled, it can be terminated remotely by maliciously crafted NSEC records. This issue impacts BIND 9 versions 9.16.8-S1 through 9.16.41-S1 and 9.18.11-S1 through 9.18.15-S1. The malformed NSEC record exploits a processing flaw in the DNSSEC validation mechanism, potentially leading to denial of service. Network administrators are advised to update their BIND servers to patch the vulnerability.

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Affected Products

  • BIND
  • ISC BIND

Affected Vendors

  • Internet Systems Consortium
  • Internet Storm Center
  • NetApp

Advisories, Assessments, and Mitigations