Upstream information
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.
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 Security Advisories:
- SUSE-SU-2024:1923-1, published Tue Jun 4 12:30:02 UTC 2024
- SUSE-SU-2024:1991-1, published Tue Jun 11 12:30:03 UTC 2024
- SUSE-SU-2024:1991-2, published Thu Aug 1 07:26:44 UTC 2024
List of released packages
Product(s) | Fixed package version(s) | References |
---|---|---|
SUSE Enterprise Storage 7.1 |
| Patchnames: SUSE-Storage-7.1-2024-1991 |
SUSE Liberty Linux 8 |
| Patchnames: RHSA-2023:2771 |
SUSE Liberty Linux 9 |
| 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 |
| 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 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP6-2024-1923 |
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP2-LTSS-2024-1991 |
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP3-LTSS-2024-1991 |
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP4-ESPOS-2024-1991 |
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP4-LTSS-2024-1991 |
SUSE Linux Enterprise Micro 5.5 |
| Patchnames: SUSE-SLE-Micro-5.5-2024-1991 |
SUSE Linux Enterprise Micro 6.0 |
| Patchnames: SUSE Linux Enterprise Micro 6.0 GA libunbound8-1.17.1-2.15 |
SUSE Linux Enterprise Module for Package Hub 15 SP5 |
| Patchnames: SUSE-SLE-Module-Packagehub-Subpackages-15-SP5-2024-1991 |
SUSE Linux Enterprise Module for Package Hub 15 SP6 |
| Patchnames: SUSE-SLE-Module-Packagehub-Subpackages-15-SP6-2024-1923 |
SUSE Linux Enterprise Server 15 SP2-LTSS |
| Patchnames: SUSE-SLE-Product-SLES-15-SP2-LTSS-2024-1991 |
SUSE Linux Enterprise Server 15 SP3-LTSS |
| Patchnames: SUSE-SLE-Product-SLES-15-SP3-LTSS-2024-1991 |
SUSE Linux Enterprise Server 15 SP4-LTSS |
| Patchnames: SUSE-SLE-Product-SLES-15-SP4-LTSS-2024-1991 |
SUSE Linux Enterprise Server for SAP Applications 15 SP2 |
| Patchnames: SUSE-SLE-Product-SLES_SAP-15-SP2-2024-1991 |
SUSE Linux Enterprise Server for SAP Applications 15 SP3 |
| Patchnames: SUSE-SLE-Product-SLES_SAP-15-SP3-2024-1991 |
SUSE Linux Enterprise Server for SAP Applications 15 SP4 |
| Patchnames: SUSE-SLE-Product-SLES_SAP-15-SP4-2024-1991 |
SUSE Manager Proxy 4.3 |
| Patchnames: SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-2024-1991 |
SUSE Manager Retail Branch Server 4.3 |
| Patchnames: SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-2024-1991 |
SUSE Manager Server 4.3 |
| Patchnames: SUSE-SLE-Product-SUSE-Manager-Server-4.3-2024-1991 |
openSUSE Leap 15.5 |
| Patchnames: openSUSE-SLE-15.5-2024-1991 |
openSUSE Leap 15.6 |
| Patchnames: openSUSE-SLE-15.6-2024-1923 |
openSUSE Tumbleweed |
| 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 2022CVE page last modified: Fri Sep 13 13:18:01 2024