CVE-2024-11187 Many records in the additional section cause CPU exhaustion
Attackers can cause CPU exhaustion in BIND servers by sending crafted queries that generate excessive additional section records.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-11187?
CVE-2024-11187 is a high-severity denial of service vulnerability in ISC BIND 9, published on 29 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
It is possible to construct a zone such that some queries to it will generate responses containing numerous records in the Additional section. An attacker sending many such queries can cause either the authoritative server itself or an independent resolver to use disproportionate resources processing the queries. Zones will usually need to have been deliberately crafted to attack this exposure. This issue affects BIND 9 versions 9.11.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, 9.11.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.32-S1.
Weakness: CWE-405
Which versions are affected by CVE-2024-11187?
Linux distribution packages (40)
bind AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-chroot AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-devel AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-export-devel AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-export-libs AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-libs AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-libs-lite AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-license AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-lite-devel AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-pkcs11 AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-pkcs11-devel AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-pkcs11-libs AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-pkcs11-utils AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-sdb AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-sdb-chroot AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind-utils AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
bind9.16 AlmaLinux:8 | All versions | 32:9.16.23-0.22.el8_10.2 |
bind9.16-chroot AlmaLinux:8 | All versions | 32:9.16.23-0.22.el8_10.2 |
bind9.16-devel AlmaLinux:8 | All versions | 32:9.16.23-0.22.el8_10.2 |
bind9.16-dnssec-utils AlmaLinux:8 | All versions | 32:9.16.23-0.22.el8_10.2 |
bind9.16-doc AlmaLinux:8 | All versions | 32:9.16.23-0.22.el8_10.2 |
bind9.16-libs AlmaLinux:8 | All versions | 32:9.16.23-0.22.el8_10.2 |
bind9.16-license AlmaLinux:8 | All versions | 32:9.16.23-0.22.el8_10.2 |
bind9.16-utils AlmaLinux:8 | All versions | 32:9.16.23-0.22.el8_10.2 |
python3-bind AlmaLinux:8 | All versions | 32:9.11.36-16.el8_10.4 |
python3-bind9.16 AlmaLinux:8 | All versions | 32:9.16.23-0.22.el8_10.2 |
bind AlmaLinux:9 | All versions | 32:9.16.23-24.el9_5.3 |
bind-chroot AlmaLinux:9 | All versions | 32:9.16.23-24.el9_5.3 |
bind-devel AlmaLinux:9 | All versions | 32:9.16.23-24.el9_5.3 |
bind-dnssec-doc AlmaLinux:9 | All versions | 32:9.16.23-24.el9_5.3 |
bind-dnssec-utils AlmaLinux:9 | All versions | 32:9.16.23-24.el9_5.3 |
bind-doc AlmaLinux:9 | All versions | 32:9.16.23-24.el9_5.3 |
bind-libs AlmaLinux:9 | All versions | 32:9.16.23-24.el9_5.3 |
bind-license AlmaLinux:9 | All versions | 32:9.16.23-24.el9_5.3 |
bind-utils AlmaLinux:9 | All versions | 32:9.16.23-24.el9_5.3 |
python3-bind AlmaLinux:9 | All versions | 32:9.16.23-24.el9_5.3 |
bind Red Hat:enterprise_linux:8::appstream | All versions | 32:9.11.36-16.el8_10.4 |
bind-chroot Red Hat:enterprise_linux:8::appstream | All versions | 32:9.11.36-16.el8_10.4 |
bind-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 32:9.11.36-16.el8_10.4 |
bind-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 32:9.11.36-16.el8_10.4 |
How do I fix CVE-2024-11187?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-11187 being exploited?
There is no known exploitation of CVE-2024-11187 in the wild and no public exploit code.
Sources
Also known as ALPINE-CVE-2024-11187, ALSA-2025:1675, ALSA-2025:1676, ALSA-2025:1681, AZL-56093, AZL-56097 and 41 more.