high
7.5
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2023-4408: Parsing large DNS messages may cause excessive CPU load

First published: Mon Feb 12 2024(Updated: )

Last updated 24 July 2024

Credit: security-officer@isc.org security-officer@isc.org

Affected SoftwareAffected VersionHow to fix
redhat/bind<9.16.48
9.16.48
redhat/bind<9.18.24
9.18.24
redhat/bind<9.19.21
9.19.21
debian/bind9
1:9.16.50-1~deb11u2
1:9.16.50-1~deb11u3
1:9.18.28-1~deb12u2
1:9.18.33-1~deb12u2
1:9.20.4-4
1:9.20.5-1
F5 BIG-IP and BIG-IQ Centralized Management>=17.1.0<=17.1.1
17.1.2
F5 BIG-IP and BIG-IQ Centralized Management>=16.1.0<=16.1.4
16.1.5
F5 BIG-IP and BIG-IQ Centralized Management>=15.1.0<=15.1.10
F5 BIG-IP and BIG-IQ Centralized Management>=8.1.0<=8.3.0
NetApp ONTAP=9.14.1
NetApp ONTAP=9.15.1
Fedora=38
Fedora=39
ISC BIND 9>=9.0.0<=9.16.45
ISC BIND 9>=9.18.0<=9.18.21
ISC BIND 9>=9.19.0<=9.19.19
ISC BIND 9=9.9.3-s1
ISC BIND 9=9.16.8-s1
ISC BIND 9=9.16.11-s1
ISC BIND 9=9.16.12-s1
ISC BIND 9=9.16.13-s1
ISC BIND 9=9.16.14-s1
ISC BIND 9=9.16.21-s1
ISC BIND 9=9.16.32-s1
ISC BIND 9=9.16.36-s1
ISC BIND 9=9.16.43-s1
ISC BIND 9=9.18.0-s1
ISC BIND 9=9.18.11-s1
ISC BIND 9=9.18.18-s1

Remedy

Upgrade to the patched release most closely related to your current version of BIND 9: 9.16.48, 9.18.24, 9.19.21, 9.16.48-S1, or 9.18.24-S1.

Remedy

https://gitlab.isc.org/isc-projects/bind9/-/commit/770bb71ce7d934d2461a719af76bee3803145811

Remedy

https://gitlab.isc.org/isc-projects/bind9/-/commit/0bbb0065e63c3231b320bd20d1121aed6c4d00d8

Remedy

https://gitlab.isc.org/isc-projects/bind9/-/commit/f397ff5bb81413004fa6367f63a833fe70a3ac59

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-4408?

    CVE-2023-4408 has a moderate severity rating due to its potential to cause excessive CPU load under crafted DNS queries.

  • How do I fix CVE-2023-4408?

    You can mitigate CVE-2023-4408 by upgrading to the recommended versions of BIND, specifically 9.16.50 or higher, 9.18.28 or higher, or 9.19.21.

  • Which software is affected by CVE-2023-4408?

    CVE-2023-4408 affects various versions of BIND, F5 BIG-IP, F5 BIG-IQ Centralized Management, and specific versions of NetApp ONTAP.

  • What impact can CVE-2023-4408 have on my system?

    If exploited, CVE-2023-4408 can lead to performance degradation due to increased CPU usage on affected DNS servers.

  • Is there a specific environment where CVE-2023-4408 is more critical?

    CVE-2023-4408 is particularly critical in environments with high DNS query volumes or custom query configurations.

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