Upstream information

CVE-2022-3204 at MITRE

Description

A vulnerability named 'Non-Responsive Delegation Attack' (NRDelegation Attack) has been discovered in various DNS resolving software. The NRDelegation Attack works by having a malicious delegation with a considerable number of non responsive nameservers. The attack starts by querying a resolver for a record that relies on those unresponsive nameservers. The attack can cause a resolver to spend a lot of time/resources resolving records under a malicious delegation point where a considerable number of unresponsive NS records reside. It can trigger high CPU usage in some resolver implementations that continually look in the cache for resolved NS records in that delegation. This can lead to degraded performance and eventually denial of service in orchestrated attacks. Unbound does not suffer from high CPU usage, but resources are still needed for resolving the malicious delegation. Unbound will keep trying to resolve the record until hard limits are reached. Based on the nature of the attack and the replies, different limits could be reached. From version 1.16.3 on, Unbound introduces fixes for better performance when under load, by cutting opportunistic queries for nameserver discovery and DNSKEY prefetching and limiting the number of times a delegation point can issue a cache lookup for missing records.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 7.5 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network Network
Attack Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1203643 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Enterprise Storage 7.1
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-Storage-7.1-2024-1991
SUSE Liberty Linux 8
  • python3-unbound >= 1.16.2-5.el8
  • unbound >= 1.16.2-5.el8
  • unbound-devel >= 1.16.2-5.el8
  • unbound-libs >= 1.16.2-5.el8
 Patchnames:
RHSA-2023:2771
SUSE Liberty Linux 9
  • python3-unbound >= 1.16.2-3.el9
  • unbound >= 1.16.2-3.el9
  • unbound-devel >= 1.16.2-3.el9
  • unbound-libs >= 1.16.2-3.el9
 Patchnames:
RHSA-2023:2370
SUSE Linux Enterprise Desktop 15 SP5
SUSE Linux Enterprise High Performance Computing 15 SP5
SUSE Linux Enterprise Module for Basesystem 15 SP5
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP5-2024-1991
SUSE Linux Enterprise Desktop 15 SP6
SUSE Linux Enterprise High Performance Computing 15 SP6
SUSE Linux Enterprise Module for Basesystem 15 SP6
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • libunbound8 >= 1.20.0-150600.23.3.1
  • unbound-anchor >= 1.20.0-150600.23.3.1
  • unbound-devel >= 1.20.0-150600.23.3.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP6-2024-1923
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP2-LTSS-2024-1991
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP3-LTSS-2024-1991
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-ESPOS-2024-1991
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-HPC-15-SP4-LTSS-2024-1991
SUSE Linux Enterprise Micro 5.5
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Micro-5.5-2024-1991
SUSE Linux Enterprise Micro 6.0
  • libunbound8 >= 1.17.1-2.15
  • unbound-anchor >= 1.17.1-2.15
 Patchnames:
SUSE Linux Enterprise Micro 6.0 GA libunbound8-1.17.1-2.15
SUSE Linux Enterprise Module for Package Hub 15 SP5
  • unbound >= 1.20.0-150100.10.13.1
  • unbound-python >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Module-Packagehub-Subpackages-15-SP5-2024-1991
SUSE Linux Enterprise Module for Package Hub 15 SP6
  • unbound >= 1.20.0-150600.23.3.1
  • unbound-python >= 1.20.0-150600.23.3.1
 Patchnames:
SUSE-SLE-Module-Packagehub-Subpackages-15-SP6-2024-1923
SUSE Linux Enterprise Server 15 SP2-LTSS
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP2-LTSS-2024-1991
SUSE Linux Enterprise Server 15 SP3-LTSS
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP3-LTSS-2024-1991
SUSE Linux Enterprise Server 15 SP4-LTSS
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-SLES-15-SP4-LTSS-2024-1991
SUSE Linux Enterprise Server for SAP Applications 15 SP2
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP2-2024-1991
SUSE Linux Enterprise Server for SAP Applications 15 SP3
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP3-2024-1991
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP4-2024-1991
SUSE Manager Proxy 4.3
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-2024-1991
SUSE Manager Retail Branch Server 4.3
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-2024-1991
SUSE Manager Server 4.3
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
 Patchnames:
SUSE-SLE-Product-SUSE-Manager-Server-4.3-2024-1991
openSUSE Leap 15.5
  • libunbound8 >= 1.20.0-150100.10.13.1
  • unbound >= 1.20.0-150100.10.13.1
  • unbound-anchor >= 1.20.0-150100.10.13.1
  • unbound-devel >= 1.20.0-150100.10.13.1
  • unbound-munin >= 1.20.0-150100.10.13.1
  • unbound-python >= 1.20.0-150100.10.13.1
 Patchnames:
openSUSE-SLE-15.5-2024-1991
openSUSE Leap 15.6
  • libunbound8 >= 1.20.0-150600.23.3.1
  • unbound >= 1.20.0-150600.23.3.1
  • unbound-anchor >= 1.20.0-150600.23.3.1
  • unbound-devel >= 1.20.0-150600.23.3.1
  • unbound-munin >= 1.20.0-150600.23.3.1
  • unbound-python >= 1.20.0-150600.23.3.1
 Patchnames:
openSUSE-SLE-15.6-2024-1923
openSUSE Tumbleweed
  • libunbound8 >= 1.16.3-1.1
  • python3-unbound >= 1.16.3-1.1
  • unbound >= 1.16.3-1.1
  • unbound-anchor >= 1.16.3-1.1
  • unbound-devel >= 1.16.3-1.1
  • unbound-munin >= 1.16.3-1.1
 Patchnames:
openSUSE-Tumbleweed-2024-12368

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP5 unbound Released
SUSE Linux Enterprise Desktop 15 SP6 unbound Released
SUSE Linux Enterprise High Performance Computing 15 SP5 unbound Released
SUSE Linux Enterprise High Performance Computing 15 SP6 unbound Released
SUSE Linux Enterprise Micro 5.5 unbound Released
SUSE Linux Enterprise Micro 6.0 unbound Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 unbound Released
SUSE Linux Enterprise Module for Basesystem 15 SP6 unbound Released
SUSE Linux Enterprise Module for Package Hub 15 SP5 unbound Released
SUSE Linux Enterprise Module for Package Hub 15 SP6 unbound Released
SUSE Linux Enterprise Server 15 SP5 unbound Released
SUSE Linux Enterprise Server 15 SP6 unbound Released
SUSE Linux Enterprise Server for SAP Applications 15 SP5 unbound Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 unbound Released
SUSE Manager Proxy 4.3 unbound Released
SUSE Manager Retail Branch Server 4.3 unbound Released
SUSE Manager Server 4.3 unbound Released
openSUSE Leap 15.5 unbound Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise Desktop 15 SP4 unbound Affected
SUSE Linux Enterprise Desktop 15 SP4 LTSS unbound Released
SUSE Linux Enterprise High Performance Computing 15 SP2 unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS unbound Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS unbound Released
SUSE Linux Enterprise High Performance Computing 15 SP3 unbound Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS unbound Released
SUSE Linux Enterprise High Performance Computing 15 SP4 unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS unbound Released
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS unbound Released
SUSE Linux Enterprise Module for Basesystem 15 SP2 unbound Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 unbound Unsupported
SUSE Linux Enterprise Module for Basesystem 15 SP4 unbound Affected
SUSE Linux Enterprise Server 15 SP2 unbound Affected
SUSE Linux Enterprise Server 15 SP2-LTSS unbound Released
SUSE Linux Enterprise Server 15 SP3 unbound Unsupported
SUSE Linux Enterprise Server 15 SP3-LTSS unbound Released
SUSE Linux Enterprise Server 15 SP4 unbound Affected
SUSE Linux Enterprise Server 15 SP4-LTSS unbound Released
SUSE Linux Enterprise Server 15-ESPOS unbound Unsupported
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 unbound Unsupported
SUSE Linux Enterprise Server Business Critical Linux 15 SP2 unbound Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 SP2 unbound Released
SUSE Linux Enterprise Server for SAP Applications 15 SP3 unbound Released
SUSE Linux Enterprise Server for SAP Applications 15 SP4 unbound Released
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 unbound Unsupported
SUSE Enterprise Storage 6 unbound Affected
SUSE Enterprise Storage 7 unbound Unsupported
SUSE Enterprise Storage 7.1 unbound Released
SUSE Linux Enterprise Desktop 15 unbound Unsupported
SUSE Linux Enterprise Desktop 15 SP1 unbound Affected
SUSE Linux Enterprise Desktop 15 SP2 unbound Affected
SUSE Linux Enterprise Desktop 15 SP3 unbound Unsupported
SUSE Linux Enterprise High Performance Computing 15 unbound Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP1 unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS unbound Unsupported
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS unbound Unsupported
SUSE Linux Enterprise High Performance Computing 15-ESPOS unbound Unsupported
SUSE Linux Enterprise High Performance Computing 15-LTSS unbound Unsupported
SUSE Linux Enterprise Module for Basesystem 15 unbound Unsupported
SUSE Linux Enterprise Module for Basesystem 15 SP1 unbound Affected
SUSE Linux Enterprise Module for Package Hub 15 SP3 unbound Unsupported
SUSE Linux Enterprise Module for Package Hub 15 SP4 unbound Affected
SUSE Linux Enterprise Real Time 15 SP2 unbound Affected
SUSE Linux Enterprise Real Time 15 SP3 unbound Affected
SUSE Linux Enterprise Real Time 15 SP4 unbound Affected
SUSE Linux Enterprise Server 15 unbound Unsupported
SUSE Linux Enterprise Server 15 SP1 unbound Affected
SUSE Linux Enterprise Server 15 SP1-BCL unbound Affected
SUSE Linux Enterprise Server 15 SP1-LTSS unbound Unsupported
SUSE Linux Enterprise Server 15 SP2-BCL unbound Affected
SUSE Linux Enterprise Server 15 SP3-BCL unbound Affected
SUSE Linux Enterprise Server 15-LTSS unbound Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 unbound Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 SP1 unbound Unsupported
SUSE Manager Proxy 4.0 unbound Affected
SUSE Manager Proxy 4.1 unbound Unsupported
SUSE Manager Proxy 4.2 unbound Unsupported
SUSE Manager Retail Branch Server 4.0 unbound Affected
SUSE Manager Retail Branch Server 4.1 unbound Unsupported
SUSE Manager Retail Branch Server 4.2 unbound Unsupported
SUSE Manager Server 4.0 unbound Affected
SUSE Manager Server 4.1 unbound Unsupported
SUSE Manager Server 4.2 unbound Unsupported
openSUSE Leap 15.3 unbound Affected
openSUSE Leap 15.4 unbound Affected

SUSE Timeline for this CVE

CVE page created: Wed Sep 21 17:07:12 2022
CVE page last modified: Fri Sep 13 13:18:01 2024