CVE-2023-2829

Malformed NSEC records can cause named to terminate unexpectedly when synth-from-dnssec is enabled

State: Published
Severity: 7.5 High
Published: Jun 21, 2023
Updated: Feb 13, 2025
Reserved: May 22, 2023

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	isc

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
BIND 9ISC	9.16.8-S1 through 9.16.41-S1Affected 9.18.11-S1 through 9.18.15-S1Affected

References

CVE-2023-2829vendor-advisory
https://security.netapp.com/advisory/ntap-20230703-0010/

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.