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Fencer Vulns
high 7.5

CVE-2024-12705 in the critical feed json

DNS-over-HTTPS implementation suffers from multiple issues under heavy query load

published 2025-01-29 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-51062

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
18.6%
EPSS 18.6% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver's CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic. This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1.

Patch / fix

  • isc bind 9.18.33, 9.18.33-S1, 9.20.5, 9.21.4
  • bind9 Debian 12 1:9.18.33-1~deb12u2
  • bind9 Debian 14, Debian 13 1:9.20.5-1

debian advisories DEBIAN-CVE-2024-12705

  • bind9 Ubuntu 20.04 LTS 1:9.18.30-0ubuntu0.20.04.2
  • bind9 Ubuntu 22.04 LTS 1:9.18.30-0ubuntu0.22.04.2
  • bind9 Ubuntu 24.04 LTS 1:9.18.30-0ubuntu0.24.04.2

ubuntu advisories UBUNTU-CVE-2024-12705

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • bind9.18 RHEL 9 32:9.18.29-1.el9_5.1
  • bind9.18-libs RHEL 9 32:9.18.29-1.el9_5.1
  • bind9.18-utils RHEL 9 32:9.18.29-1.el9_5.1
  • bind9.18-chroot RHEL 9 32:9.18.29-1.el9_5.1
  • bind9.18-dnssec-utils RHEL 9 32:9.18.29-1.el9_5.1

red hat advisories RHSA-2025:1670

  • bind SLE Module for Server Applications 15 SP7, SLE Module for Basesystem 15 SP7 9.20.9-150700.3.3.1
  • bind SLE Module for Server Applications 15 SP6, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 9.18.33-150600.3.6.1

suse advisories SUSE-SU-2025:01787-1SUSE-SU-2025:0355-1

  • bind openSUSE Tumbleweed 9.20.5-1.1

opensuse advisories openSUSE-SU-2025:14719-1

  • bind9.18 AlmaLinux 9 32:9.18.29-1.el9_5.1
  • bind9.18-libs AlmaLinux 9 32:9.18.29-1.el9_5.1
  • bind9.18-utils AlmaLinux 9 32:9.18.29-1.el9_5.1
  • bind9.18-chroot AlmaLinux 9 32:9.18.29-1.el9_5.1
  • bind9.18-dnssec-utils AlmaLinux 9 32:9.18.29-1.el9_5.1

almalinux advisories ALSA-2025:1670

  • bind9.18 Rocky Linux 9 2:9.18.29-1.el9_5.1

rocky linux advisories RLSA-2025:1670

  • bind Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 9.18.33-r0

alpine advisories ALPINE-CVE-2024-12705

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • bind Azure Linux 3.0 9.20.5-1

azure linux advisories AZL-56105

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-12705 updated cvss 7.5

bind: bind9: DNS-over-HTTPS implementation suffers from multiple issues under heavy query load

  • Red Hat CodeReady Linux Builder (v. 9) bind9.18-libs 9.18.29-1.el9_5.1 Red Hat Enterprise Linux AppStream (v. 9) bind9.18 9.18.29-1.el9_5.1, bind9.18-libs 9.18.29-1.el9_5.1, bind9.18-utils 9.18.29-1.el9_5.1, bind9.18-chroot 9.18.29-1.el9_5.1, bind9.18-dnssec-utils 9.18.29-1.el9_5.1
    fixed: vendor fix “If the feature is not needed, disable DNS-over-HTTPS (DoH) in your bind config. Otherwise, we recommend upgrading to a patched version of bind.” RHSA-2025:1670
  • Red Hat OpenShift Container Platform 4.16 rhcos 416.94.202502260030-0
    fixed: vendor fix “If the feature is not needed, disable DNS-over-HTTPS (DoH) in your bind config. Otherwise, we recommend upgrading to a patched version of bind.” RHSA-2025:1907
  • Red Hat Enterprise Linux 6 bind, bind-sdb, bind-libs, bind-utils, bind-chroot Red Hat Enterprise Linux 7 bind, bind-sdb, bind-libs, bind-utils, bind-chroot, bind-pkcs11, +6 more Red Hat Enterprise Linux 8 bind, bind-sdb, bind9.16, bind-libs, bind-utils, bind-chroot, +14 more Red Hat Enterprise Linux 9 bind, dhcp, bind-libs, bind-utils, dhcp-relay, bind-chroot, +6 more Red Hat Enterprise Linux 10 bind Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8
    +1 more products
    Red Hat OpenShift Container Platform 4.16 openshift4/ose-cli-rhel9 v4.16.0-202502250034.p0.gcf533b5.assembly.stream.el9, openshift4/ose-pod-rhel9 v4.16.0-202502250034.p0.g7cf4c05.assembly.stream.el9, openshift4/ose-sdn-rhel9 v4.16.0-202502250034.p0.ge5c0eb4.assembly.stream.el9, openshift4/ose-etcd-rhel9 v4.16.0-202502250034.p0.ge7911c0.assembly.stream.el9, openshift4/ose-tests-rhel9 v4.16.0-202502250034.p0.g079a3fd.assembly.stream.el9, openshift4/ose-tools-rhel9 v4.16.0-202502250034.p0.gcf533b5.assembly.stream.el9, +185 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

18.57% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • ISC BIND 9

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.