Description

A `named` instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache (RFC 8198) option (`synth-from-dnssec`) enabled can be remotely terminated using a zone with a malformed NSEC record.
This issue affects BIND 9 versions 9.16.8-S1 through 9.16.41-S1 and 9.18.11-S1 through 9.18.15-S1.

Classification

CVE ID: CVE-2023-2829

CVSS Base Severity: HIGH

CVSS Base Score: 7.5

Affected Products

Vendor: ISC

Product: BIND 9

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 14.88% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://kb.isc.org/docs/cve-2023-2829
https://security.netapp.com/advisory/ntap-20230703-0010/

Timeline