synced 4 MIN AGO
01 Record

CVE-2023-4408

Parsing large DNS messages may cause excessive CPU load

HighPUBLISHEDCNA: isc
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

Parsing large DNS messages may cause excessive CPU load

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.38% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 72.0% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-02-13 14:04Z2 YR AGO
Last updated
2025-03-14 16:16Z1 YR AGO
Reserved
2023-08-18
Assigning CNA
isc
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-407Inefficient Algorithmic ComplexityClass
  • CWE-400Uncontrolled Resource ConsumptionClass
Data version
5.1
Document digest
9e1069ce5e5e36af92f6ffcd96bfa832de1d93107b4b8337a10c349ae0d40771

05 Affected products

VendorProductVersionsPlatforms
ISCBIND 99.0.0 to 9.16.45, 9.18.0 to 9.18.21, 9.19.0 to 9.19.19, 9.9.3-S1 to 9.11.37-S1, 9.16.8-S1 to 9.16.45-S1, 9.18.11-S1 to 9.18.21-S1—

06 References

07 Remediation

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.

08 Fixed in

AlmaLinux 8

  • bind
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-chroot
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-export-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-export-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-libs-lite
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-license
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-lite-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-pkcs11
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-pkcs11-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-pkcs11-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-pkcs11-utils
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-sdb
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-sdb-chroot
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-utils
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind9.16
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-chroot
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-devel
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-dnssec-utils
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-doc
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-libs
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-license
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-utils
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • python3-bind
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • python3-bind9.16
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • bind
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-chroot
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-dnssec-doc
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-dnssec-utils
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-doc
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-dyndb-ldap
    Fixed

    A version is affected if any line below covers it.

    • Affected before 11.9-8.el9_3.3.alma.1
    • Affected before 11.9-9.el9_4.alma.1
  • bind-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-license
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-utils
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • python3-bind
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • bind
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-chroot
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-export-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-export-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-libs-lite
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-license
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-lite-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-pkcs11
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-pkcs11-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-pkcs11-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-pkcs11-utils
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-sdb
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-sdb-chroot
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind-utils
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • bind9.16
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-chroot
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-devel
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-dnssec-utils
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-doc
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-libs
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-license
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • bind9.16-utils
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1
  • python3-bind
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.11.36-11.el8_9.1
    • Affected before 32:9.11.36-14.el8_10
  • python3-bind9.16
    Fixed in 32:9.16.23-0.16.el8_9.2.alma.1

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • bind
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-chroot
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-dnssec-doc
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-dnssec-utils
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-doc
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-dyndb-ldap
    Fixed

    A version is affected if any line below covers it.

    • Affected before 11.9-8.el9_3.3.alma.1
    • Affected before 11.9-9.el9_4.alma.1
  • bind-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-license
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • bind-utils
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1
  • python3-bind
    Fixed

    A version is affected if any line below covers it.

    • Affected before 32:9.16.23-14.el9_3.4
    • Affected before 32:9.16.23-18.el9_4.1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • bind9
    Fixed in 1:9.18.24-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • bind9
    Fixed in 1:9.19.21-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • bind9
    Fixed in 1:9.19.21-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • bind9
    Fixed in 1:9.16.48-0ubuntu0.20.04.1
  • bind9-libs
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • bind9
    Fixed in 1:9.18.18-0ubuntu0.22.04.2
  • bind9-libs
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • isc-dhcp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • isc-dhcp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • isc-dhcp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • bind9
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • bind9
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • bind9
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.