CVE-2023-2829: Malformed NSEC records can cause named to terminate unexpectedly when synth-from-dnssec is enabled
First published: Wed Jun 21 2023(Updated: )
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.
Credit: security-officer@isc.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ISC BIND | >=9.16.8<=9.16.41 | |
| ISC BIND | >=9.18.11<=9.18.15 | |
| Netapp Active Iq Unified Manager Vmware Vsphere | ||
| Netapp H500s Firmware | ||
| Netapp H500s | ||
| Netapp H700s Firmware | ||
| Netapp H700s | ||
| Netapp H410s Firmware | ||
| Netapp H410s | ||
| Netapp H410c Firmware | ||
| Netapp H410c | ||
| Netapp H300s Firmware | ||
| Netapp H300s |
Remedy
Upgrade to the patched release most closely related to your current version of BIND 9: 9.16.42-S1 or 9.18.16-S1.
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this security issue?
The vulnerability ID for this security issue is CVE-2023-2829.
What is the severity rating of CVE-2023-2829?
The severity rating of CVE-2023-2829 is high (7.5).
Which software versions are affected by CVE-2023-2829?
BIND 9 versions 9.16.8-S1 through 9.16.41 and BIND 9 versions 9.18.11 through 9.18.15 are affected by CVE-2023-2829.
What is the impact of CVE-2023-2829?
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.
How can CVE-2023-2829 be fixed?
Upgrade BIND to version 9.16.42 or 9.18.16 or apply the recommended patches provided by ISC.
- agent/references
- agent/type
- collector/nvd-index
- agent/software-canonical-lookup-request
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- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/remedy
- agent/title
- agent/tags
- agent/first-publish-date
- agent/event
- vendor/isc
- canonical/isc bind
- version/isc bind/9.16.8
- version/isc bind/9.16.41
- version/isc bind/9.18.11
- version/isc bind/9.18.15
- vendor/netapp
- canonical/netapp active iq unified manager vmware vsphere
- canonical/netapp h500s firmware
- canonical/netapp h500s
- canonical/netapp h700s firmware
- canonical/netapp h700s
- canonical/netapp h410s firmware
- canonical/netapp h410s
- canonical/netapp h410c firmware
- canonical/netapp h410c
- canonical/netapp h300s firmware
- canonical/netapp h300s