Upstream information
Description
NLnet Labs Unbound version 1.18.0 up to and including version 1.19.1 contain a vulnerability that can cause denial of service by a certain code path that can lead to an infinite loop. Unbound 1.18.0 introduced a feature that removes EDE records from responses with size higher than the client's advertised buffer size. Before removing all the EDE records however, it would try to see if trimming the extra text fields on those records would result in an acceptable size while still retaining the EDE codes. Due to an unchecked condition, the code that trims the text of the EDE records could loop indefinitely. This happens when Unbound would reply with attached EDE information on a positive reply and the client's buffer size is smaller than the needed space to include EDE records. The vulnerability can only be triggered when the 'ede: yes' option is used; non default configuration. From version 1.19.2 on, the code is fixed to avoid looping indefinitely.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| CNA (NLnet Labs) | National Vulnerability Database | SUSE | |
|---|---|---|---|
| Base Score | 7.5 | 7.5 | 5.9 |
| 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 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network | Network | Network |
| Attack Complexity | Low | Low | High |
| Privileges Required | None | None | None |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality Impact | None | None | None |
| Integrity Impact | None | None | None |
| Availability Impact | High | High | High |
| CVSSv3 Version | 3.1 | 3.1 | 3.1 |
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| SUSE Linux Micro 6.0 |
| Patchnames: SUSE-SLE-Micro-6.0-31 |
| SUSE Linux Micro 6.1 |
| Patchnames: SUSE Linux Micro 6.1 GA libunbound8-1.21.0-slfo.1.1_1.2 |
| openSUSE Tumbleweed |
| Patchnames: openSUSE-Tumbleweed-2024-13762 |
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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | unbound | Not affected |
| SUSE Linux Enterprise Micro 5.5 | unbound | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | unbound | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | unbound | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | unbound | Not affected |
| SUSE Linux Micro 6.0 | unbound | Released |
| SUSE Linux Micro 6.1 | unbound | Released |
| SUSE Manager Proxy 4.3 | unbound | Not affected |
| SUSE Manager Retail Branch Server 4.3 | unbound | Not affected |
| SUSE Manager Server 4.3 | unbound | Not affected |
| openSUSE Leap 15.5 | unbound | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP4 | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | unbound | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | unbound | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | unbound | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP3 | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | unbound | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | unbound | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | unbound | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | unbound | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | unbound | Not affected |
| SUSE Enterprise Storage 6 | unbound | Not affected |
| SUSE Enterprise Storage 7 | unbound | Not affected |
| SUSE Enterprise Storage 7.1 | unbound | Not affected |
| SUSE Linux Enterprise Desktop 15 | unbound | Not affected |
| SUSE Linux Enterprise Desktop 15 SP1 | unbound | Not affected |
| SUSE Linux Enterprise Desktop 15 SP2 | unbound | Not affected |
| SUSE Linux Enterprise Desktop 15 SP3 | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | unbound | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | unbound | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 | unbound | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | unbound | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP3 | unbound | Not affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | unbound | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | unbound | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | unbound | Not affected |
| SUSE Linux Enterprise Real Time 15 SP4 | unbound | Not affected |
| SUSE Linux Enterprise Server 15 | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP1 | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | unbound | Not affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | unbound | Not affected |
| SUSE Linux Enterprise Server 15-LTSS | unbound | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | unbound | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | unbound | Not affected |
| SUSE Manager Proxy 4.0 | unbound | Not affected |
| SUSE Manager Proxy 4.1 | unbound | Not affected |
| SUSE Manager Proxy 4.2 | unbound | Not affected |
| SUSE Manager Retail Branch Server 4.0 | unbound | Not affected |
| SUSE Manager Retail Branch Server 4.1 | unbound | Not affected |
| SUSE Manager Retail Branch Server 4.2 | unbound | Not affected |
| SUSE Manager Server 4.0 | unbound | Not affected |
| SUSE Manager Server 4.1 | unbound | Not affected |
| SUSE Manager Server 4.2 | unbound | Not affected |
| openSUSE Leap 15.3 | unbound | Not affected |
| openSUSE Leap 15.4 | unbound | Not affected |
SUSE Timeline for this CVE
CVE page created: Thu Mar 7 13:00:08 2024CVE page last modified: Sat Dec 21 00:19:05 2024