Upstream information
Description
c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts when using read_answer() and process_answer(), which can cause a Denial of Service. This issue is fixed in version 1.34.6.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| CVSS detail | CNA (GitHub) |
|---|---|
| Base Score | 5.9 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
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Please note that this evaluation state might be work in progress, incomplete or outdated.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 SP6 | c-ares | Not affected |
| SUSE Linux Enterprise Desktop 15 SP7 | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | c-ares | Not affected |
| SUSE Linux Enterprise Micro 5.2 | c-ares | Not affected |
| SUSE Linux Enterprise Micro 5.3 | c-ares | Not affected |
| SUSE Linux Enterprise Micro 5.4 | c-ares | Not affected |
| SUSE Linux Enterprise Micro 5.5 | c-ares | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | c-ares | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP6 | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP7 | c-ares | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | c-ares | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | c-ares | Not affected |
| SUSE Linux Micro 6.0 | c-ares | Not affected |
| SUSE Linux Micro 6.1 | c-ares | Not affected |
| openSUSE Leap 15.6 | c-ares | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | c-ares | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP4 | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP5 | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | c-ares | Not affected |
| SUSE Manager Proxy 4.3 | c-ares | Not affected |
| SUSE Manager Proxy LTS 4.3 | c-ares | Not affected |
| SUSE Manager Retail Branch Server 4.3 | c-ares | Not affected |
| SUSE Manager Retail Branch Server LTS 4.3 | c-ares | Not affected |
| SUSE Manager Server 4.3 | c-ares | Not affected |
| SUSE Manager Server LTS 4.3 | c-ares | Not affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | c-ares | Not affected |
| SUSE Enterprise Storage 6 | c-ares | Not affected |
| SUSE Enterprise Storage 7 | c-ares | Not affected |
| SUSE Enterprise Storage 7.1 | c-ares | Not affected |
| SUSE Linux Enterprise Desktop 15 | c-ares | Not affected |
| SUSE Linux Enterprise Desktop 15 SP1 | c-ares | Not affected |
| SUSE Linux Enterprise Desktop 15 SP2 | c-ares | Not affected |
| SUSE Linux Enterprise Desktop 15 SP4 | c-ares | Not affected |
| SUSE Linux Enterprise Desktop 15 SP5 | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | c-ares | Not affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise Micro 5.1 | c-ares | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 | c-ares | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | c-ares | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | c-ares | Not affected |
| SUSE Linux Enterprise Real Time 15 SP2 | c-ares | Not affected |
| SUSE Linux Enterprise Real Time 15 SP3 | c-ares | Not affected |
| SUSE Linux Enterprise Real Time 15 SP4 | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP1 | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP2 | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | c-ares | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise Server 15-LTSS | c-ares | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | c-ares | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | c-ares | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | c-ares | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | c-ares | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | c-ares | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | c-ares | Not affected |
| SUSE Manager Proxy 4.0 | c-ares | Not affected |
| SUSE Manager Proxy 4.1 | c-ares | Not affected |
| SUSE Manager Proxy 4.2 | c-ares | Not affected |
| SUSE Manager Retail Branch Server 4.0 | c-ares | Not affected |
| SUSE Manager Retail Branch Server 4.1 | c-ares | Not affected |
| SUSE Manager Retail Branch Server 4.2 | c-ares | Not affected |
| SUSE Manager Server 4.0 | c-ares | Not affected |
| SUSE Manager Server 4.1 | c-ares | Not affected |
| SUSE Manager Server 4.2 | c-ares | Not affected |
| openSUSE Leap 15.4 | c-ares | Not affected |
| openSUSE Leap 15.5 | c-ares | Not affected |
| openSUSE Leap Micro 5.2 | c-ares | Not affected |
| openSUSE Leap Micro 5.3 | c-ares | Not affected |
| openSUSE Leap Micro 5.4 | c-ares | Not affected |
| openSUSE Leap Micro 5.5 | c-ares | Not affected |
SUSE Timeline for this CVE
CVE page created: Mon Dec 8 19:00:09 2025CVE page last modified: Wed Dec 10 18:30:08 2025