CVE-2023-2829

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

High · published June 21, 2023

CVSS v3.1
7.5
EPSS
1%
Percentile
58.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00875 · 58.3th percentile
Published
2023-06-21T16:26Z
EPSS history
Timeline
  • 21 JUN 16:26Z
    Malformed NSEC records can cause named to terminate unexpectedly when synth-from-dnssec is enabled
    cvelistv5