Bug 2263896 (CVE-2023-4408)

Summary:	CVE-2023-4408 bind9: Parsing large DNS messages may cause excessive CPU load
Product:	[Other] Security Response	Reporter:	Marco Benatto <mbenatto>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	hmatsumo, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	bind 9.16.48, bind 9.18.24, bind 9.19.21	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the bind package. This issue may allow a remote attacker with no specific privileges to craft a specially long DNS message leading to an excessive and uncontrolled CPU usage, the server being unavailable, and a Denial of Service.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2264062, 2264365
Bug Blocks:	2263895

Description Marco Benatto 2024-02-12 16:55:54 UTC

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.

Comment 3 Dhananjay Arunesh 2024-02-13 16:38:29 UTC

Created bind tracking bugs for this issue:

Affects: fedora-all [bug 2264062]

Comment 5 Dhananjay Arunesh 2024-02-15 08:29:48 UTC

Created dhcp tracking bugs for this issue:

Affects: fedora-all [bug 2264365]

Comment 8 errata-xmlrpc 2024-04-02 20:49:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:1647 https://access.redhat.com/errata/RHSA-2024:1647

Comment 9 errata-xmlrpc 2024-04-02 20:50:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Extended Update Support

Via RHSA-2024:1648 https://access.redhat.com/errata/RHSA-2024:1648

Comment 10 errata-xmlrpc 2024-04-11 10:59:41 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:1781 https://access.redhat.com/errata/RHSA-2024:1781

Comment 11 errata-xmlrpc 2024-04-11 11:11:09 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:1782 https://access.redhat.com/errata/RHSA-2024:1782

Comment 12 errata-xmlrpc 2024-04-11 17:43:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:1789 https://access.redhat.com/errata/RHSA-2024:1789

Comment 13 errata-xmlrpc 2024-04-15 01:26:26 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2024:1800 https://access.redhat.com/errata/RHSA-2024:1800

Comment 14 errata-xmlrpc 2024-04-15 01:47:19 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:1803 https://access.redhat.com/errata/RHSA-2024:1803

Comment 16 errata-xmlrpc 2024-04-30 14:37:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2551 https://access.redhat.com/errata/RHSA-2024:2551

Comment 17 errata-xmlrpc 2024-05-07 07:24:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:2720 https://access.redhat.com/errata/RHSA-2024:2720

Comment 18 errata-xmlrpc 2024-05-07 07:44:51 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Extended Update Support

Via RHSA-2024:2721 https://access.redhat.com/errata/RHSA-2024:2721

Comment 19 errata-xmlrpc 2024-05-13 01:28:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.4 Telecommunications Update Service

Via RHSA-2024:2821 https://access.redhat.com/errata/RHSA-2024:2821

Comment 20 errata-xmlrpc 2024-05-16 17:36:52 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2024:2890 https://access.redhat.com/errata/RHSA-2024:2890

Comment 21 errata-xmlrpc 2024-05-22 11:41:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:3271 https://access.redhat.com/errata/RHSA-2024:3271

Comment 22 errata-xmlrpc 2024-06-10 07:56:34 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2024:3741 https://access.redhat.com/errata/RHSA-2024:3741

Comment 25 errata-xmlrpc 2025-01-06 13:32:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6 Extended Lifecycle Support  - EXTENSION

Via RHSA-2025:0039 https://access.redhat.com/errata/RHSA-2025:0039