Vulnerability · Published Feb 13, 2024 · Assigned by isc
CVE-2023-4408Parsing large DNS messages may cause excessive CPU load
High 7.5
In plain English
A high-severity security flaw in BIND 9 from ISC. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.4%top 27.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The DNS message parsing code in `named` includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected `named` instance by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers. This issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bind | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:9 | bind | 32:9.16.23-14.el9_3.4 | ALSA-2024:1789 |
| AlmaLinux:9 | bind | 32:9.16.23-18.el9_4.1 | ALSA-2024:2551 |
| AlmaLinux:8 | bind-chroot | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-chroot | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:9 | bind-chroot | 32:9.16.23-14.el9_3.4 | ALSA-2024:1789 |
| AlmaLinux:9 | bind-chroot | 32:9.16.23-18.el9_4.1 | ALSA-2024:2551 |
| AlmaLinux:8 | bind-devel | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-devel | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:9 | bind-devel | 32:9.16.23-18.el9_4.1 | ALSA-2024:2551 |
| AlmaLinux:9 | bind-devel | 32:9.16.23-14.el9_3.4 | ALSA-2024:1789 |
| AlmaLinux:9 | bind-dnssec-doc | 32:9.16.23-14.el9_3.4 | ALSA-2024:1789 |
| AlmaLinux:9 | bind-dnssec-doc | 32:9.16.23-18.el9_4.1 | ALSA-2024:2551 |
| AlmaLinux:9 | bind-dnssec-utils | 32:9.16.23-14.el9_3.4 | ALSA-2024:1789 |
| AlmaLinux:9 | bind-dnssec-utils | 32:9.16.23-18.el9_4.1 | ALSA-2024:2551 |
| AlmaLinux:9 | bind-doc | 32:9.16.23-14.el9_3.4 | ALSA-2024:1789 |
| AlmaLinux:9 | bind-doc | 32:9.16.23-18.el9_4.1 | ALSA-2024:2551 |
| AlmaLinux:9 | bind-dyndb-ldap | 11.9-9.el9_4.alma.1 | ALSA-2024:2551 |
| AlmaLinux:9 | bind-dyndb-ldap | 11.9-8.el9_3.3.alma.1 | ALSA-2024:1789 |
| AlmaLinux:8 | bind-export-devel | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-export-devel | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-export-libs | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-export-libs | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-libs | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-libs | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:9 | bind-libs | 32:9.16.23-14.el9_3.4 | ALSA-2024:1789 |
| AlmaLinux:9 | bind-libs | 32:9.16.23-18.el9_4.1 | ALSA-2024:2551 |
| AlmaLinux:8 | bind-libs-lite | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-libs-lite | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-license | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-license | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:9 | bind-license | 32:9.16.23-14.el9_3.4 | ALSA-2024:1789 |
| AlmaLinux:9 | bind-license | 32:9.16.23-18.el9_4.1 | ALSA-2024:2551 |
| AlmaLinux:8 | bind-lite-devel | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-lite-devel | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-pkcs11 | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-pkcs11 | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-pkcs11-devel | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-pkcs11-devel | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-pkcs11-libs | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-pkcs11-libs | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-pkcs11-utils | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-pkcs11-utils | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-sdb | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-sdb | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-sdb-chroot | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:8 | bind-sdb-chroot | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-utils | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | bind-utils | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:9 | bind-utils | 32:9.16.23-14.el9_3.4 | ALSA-2024:1789 |
| AlmaLinux:9 | bind-utils | 32:9.16.23-18.el9_4.1 | ALSA-2024:2551 |
| AlmaLinux:8 | bind9.16 | 32:9.16.23-0.16.el8_9.2.alma.1 | ALSA-2024:1781 |
| AlmaLinux:8 | bind9.16-chroot | 32:9.16.23-0.16.el8_9.2.alma.1 | ALSA-2024:1781 |
| AlmaLinux:8 | bind9.16-devel | 32:9.16.23-0.16.el8_9.2.alma.1 | ALSA-2024:1781 |
| AlmaLinux:8 | bind9.16-dnssec-utils | 32:9.16.23-0.16.el8_9.2.alma.1 | ALSA-2024:1781 |
| AlmaLinux:8 | bind9.16-doc | 32:9.16.23-0.16.el8_9.2.alma.1 | ALSA-2024:1781 |
| AlmaLinux:8 | bind9.16-libs | 32:9.16.23-0.16.el8_9.2.alma.1 | ALSA-2024:1781 |
| AlmaLinux:8 | bind9.16-license | 32:9.16.23-0.16.el8_9.2.alma.1 | ALSA-2024:1781 |
| AlmaLinux:8 | bind9.16-utils | 32:9.16.23-0.16.el8_9.2.alma.1 | ALSA-2024:1781 |
| AlmaLinux:8 | python3-bind | 32:9.11.36-11.el8_9.1 | ALSA-2024:1782 |
| AlmaLinux:8 | python3-bind | 32:9.11.36-14.el8_10 | ALSA-2024:3271 |
| AlmaLinux:9 | python3-bind | 32:9.16.23-14.el9_3.4 | ALSA-2024:1789 |
| AlmaLinux:9 | python3-bind | 32:9.16.23-18.el9_4.1 | ALSA-2024:2551 |
| AlmaLinux:8 | python3-bind9.16 | 32:9.16.23-0.16.el8_9.2.alma.1 | ALSA-2024:1781 |
| Alpine:v3.20 | bind | 9.18.24-r0 | ALPINE-CVE-2023-4408 |
| Alpine:v3.21 | bind | 9.18.24-r0 | ALPINE-CVE-2023-4408 |
| Alpine:v3.22 | bind | 9.18.24-r0 | ALPINE-CVE-2023-4408 |
| Alpine:v3.23 | bind | 9.18.24-r0 | ALPINE-CVE-2023-4408 |
| Alpine:v3.24 | bind | 9.18.24-r0 | ALPINE-CVE-2023-4408 |
| Debian:12 | bind9 | 1:9.18.24-1 | DSA-5621-1 |
| Debian:12 | bind9 | 1:9.18.24-1 | DEBIAN-CVE-2023-4408 |
| Debian:13 | bind9 | 1:9.19.21-1 | DEBIAN-CVE-2023-4408 |
| Debian:14 | bind9 | 1:9.19.21-1 | DEBIAN-CVE-2023-4408 |
| Rocky Linux:8 | bind | 2:9.11.36-11.el8_9.1 | RLSA-2024:1782 |
| Rocky Linux:8 | bind | 2:9.11.36-14.el8_10 | RLSA-2024:3271 |
| Rocky Linux:9 | bind | 2:9.16.23-18.el9_4.1 | RLSA-2024:2551 |
| Rocky Linux:9 | bind-dyndb-ldap | 0:11.9-9.el9_4 | RLSA-2024:2551 |
| Rocky Linux:8 | bind9.16 | 2:9.16.23-0.16.el8_9.2 | RLSA-2024:1781 |
| Rocky Linux:8 | dhcp | 2:4.3.6-50.el8_10 | RLSA-2024:3271 |
| Rocky Linux:8 | dhcp | 2:4.3.6-49.el8_9.1 | RLSA-2024:1782 |
| Ubuntu:22.04:LTS | bind9 | 1:9.18.18-0ubuntu0.22.04.2 | UBUNTU-CVE-2023-4408 |
| Ubuntu:22.04:LTS | bind9 | 1:9.18.18-0ubuntu0.22.04.2 | USN-6633-1 |
| Ubuntu:22.04:LTS | bind9-libs | no fix listed | UBUNTU-CVE-2023-4408 |
| Ubuntu:24.04:LTS | isc-dhcp | no fix listed | UBUNTU-CVE-2023-4408 |
| Ubuntu:25.10 | isc-dhcp | no fix listed | UBUNTU-CVE-2023-4408 |
| Ubuntu:26.04:LTS | isc-dhcp | no fix listed | UBUNTU-CVE-2023-4408 |
Affected products (as reported)
Weakness: CWE-407 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- CVE-2023-4408 vendor-advisory
- http://www.openwall.com/lists/oss-security/2024/02/13/1
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
- https://security.netapp.com/advisory/ntap-20240426-0001/