Upstream information

CVE-2024-8508 at MITRE

Description

NLnet Labs Unbound up to and including version 1.21.0 contains a vulnerability when handling replies with very large RRsets that it needs to perform name compression for. Malicious upstreams responses with very large RRsets can cause Unbound to spend a considerable time applying name compression to downstream replies. This can lead to degraded performance and eventually denial of service in well orchestrated attacks. The vulnerability can be exploited by a malicious actor querying Unbound for the specially crafted contents of a malicious zone with very large RRsets. Before Unbound replies to the query it will try to apply name compression which was an unbounded operation that could lock the CPU until the whole packet was complete. Unbound version 1.21.1 introduces a hard limit on the number of name compression calculations it is willing to do per packet. Packets that need more compression will result in semi-compressed packets or truncated packets, even on TCP for huge messages, to avoid locking the CPU for long. This change should not affect normal DNS traffic.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having moderate severity.

CVSS v3 Scores
  CNA (NLnet Labs) National Vulnerability Database SUSE
Base Score 5.3 5.3 5.8
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Attack Vector Network Network Network
Attack Complexity Low Low Low
Privileges Required None None None
User Interaction None None None
Scope Unchanged Unchanged Changed
Confidentiality Impact None None None
Integrity Impact None None None
Availability Impact Low Low Low
CVSSv3 Version 3.1 3.1 3.1
CVSS v4 Scores
  SUSE
Base Score 6.9
Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact None
Vulnerable System Integrity Impact None
Vulnerable System Availability Impact Low
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact Low
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1231284 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
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 >= 1.20.0-150100.10.19.1
  • unbound-anchor >= 1.20.0-150100.10.19.1
  • unbound-devel >= 1.20.0-150100.10.19.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP5-2024-3646
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 >= 1.20.0-150600.23.9.1
  • unbound-anchor >= 1.20.0-150600.23.9.1
  • unbound-devel >= 1.20.0-150600.23.9.1
 Patchnames:
SUSE-SLE-Module-Basesystem-15-SP6-2024-3647
SUSE Linux Enterprise Micro 5.5
  • libunbound8 >= 1.20.0-150100.10.19.1
  • unbound-anchor >= 1.20.0-150100.10.19.1
 Patchnames:
SUSE-SLE-Micro-5.5-2024-3646
SUSE Linux Enterprise Module for Package Hub 15 SP5
  • unbound >= 1.20.0-150100.10.19.1
  • unbound-python >= 1.20.0-150100.10.19.1
 Patchnames:
SUSE-SLE-Module-Packagehub-Subpackages-15-SP5-2024-3646
SUSE Linux Enterprise Module for Package Hub 15 SP6
  • unbound >= 1.20.0-150600.23.9.1
  • unbound-python >= 1.20.0-150600.23.9.1
 Patchnames:
SUSE-SLE-Module-Packagehub-Subpackages-15-SP6-2024-3647
openSUSE Leap 15.5
  • libunbound8 >= 1.20.0-150100.10.19.1
  • unbound >= 1.20.0-150100.10.19.1
  • unbound-anchor >= 1.20.0-150100.10.19.1
  • unbound-devel >= 1.20.0-150100.10.19.1
  • unbound-munin >= 1.20.0-150100.10.19.1
  • unbound-python >= 1.20.0-150100.10.19.1
 Patchnames:
openSUSE-SLE-15.5-2024-3646
openSUSE Leap 15.6
  • libunbound8 >= 1.20.0-150600.23.9.1
  • unbound >= 1.20.0-150600.23.9.1
  • unbound-anchor >= 1.20.0-150600.23.9.1
  • unbound-devel >= 1.20.0-150600.23.9.1
  • unbound-munin >= 1.20.0-150600.23.9.1
  • unbound-python >= 1.20.0-150600.23.9.1
 Patchnames:
openSUSE-SLE-15.6-2024-3647
openSUSE Tumbleweed
  • libunbound8 >= 1.21.1-1.1
  • python3-unbound >= 1.21.1-1.1
  • unbound >= 1.21.1-1.1
  • unbound-anchor >= 1.21.1-1.1
  • unbound-devel >= 1.21.1-1.1
  • unbound-munin >= 1.21.1-1.1
 Patchnames:
openSUSE-Tumbleweed-2024-14391

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 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 Linux Micro 6.0 unbound Affected
SUSE Linux Micro 6.1 unbound Affected
SUSE Manager Proxy 4.3 unbound Affected
SUSE Manager Retail Branch Server 4.3 unbound Affected
SUSE Manager Server 4.3 unbound Affected
openSUSE Leap 15.5 unbound Released
openSUSE Leap 15.6 libunbound-devel-mini Released
openSUSE Leap 15.6 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 High Performance Computing 15 SP2 unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS unbound Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 unbound Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 unbound Affected
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 Affected
SUSE Linux Enterprise Server 15 SP3 unbound Affected
SUSE Linux Enterprise Server 15 SP3-LTSS unbound Affected
SUSE Linux Enterprise Server 15 SP4 unbound Affected
SUSE Linux Enterprise Server 15 SP4-LTSS unbound Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 unbound Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 unbound Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 unbound Affected
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 unbound Affected
SUSE Enterprise Storage 6 unbound Affected
SUSE Enterprise Storage 7 unbound Affected
SUSE Enterprise Storage 7.1 unbound Affected
SUSE Linux Enterprise Desktop 15 unbound Affected
SUSE Linux Enterprise Desktop 15 SP1 unbound Affected
SUSE Linux Enterprise Desktop 15 SP2 unbound Affected
SUSE Linux Enterprise Desktop 15 SP3 unbound Affected
SUSE Linux Enterprise High Performance Computing 15 unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS unbound Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS unbound Affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS unbound Affected
SUSE Linux Enterprise High Performance Computing 15-LTSS unbound Affected
SUSE Linux Enterprise Module for Basesystem 15 unbound Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 unbound Affected
SUSE Linux Enterprise Module for Package Hub 15 SP3 unbound Affected
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 Affected
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 Affected
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 Affected
SUSE Linux Enterprise Server for SAP Applications 15 unbound Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 unbound Affected
SUSE Manager Proxy 4.0 unbound Affected
SUSE Manager Proxy 4.1 unbound Affected
SUSE Manager Proxy 4.2 unbound Affected
SUSE Manager Retail Branch Server 4.0 unbound Affected
SUSE Manager Retail Branch Server 4.1 unbound Affected
SUSE Manager Retail Branch Server 4.2 unbound Affected
SUSE Manager Server 4.0 unbound Affected
SUSE Manager Server 4.1 unbound Affected
SUSE Manager Server 4.2 unbound Affected
openSUSE Leap 15.3 unbound Affected
openSUSE Leap 15.4 unbound Affected

SUSE Timeline for this CVE

CVE page created: Thu Oct 3 20:00:26 2024
CVE page last modified: Wed Dec 18 00:55:42 2024