Upstream information
Description
strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the failure to validate AVP length fields before subtraction to trigger excessive memory allocation or NULL pointer dereference, crashing the charon IKE daemon.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | CNA (VulnCheck) | 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 |
| CVSS detail | CNA (VulnCheck) | SUSE |
|---|---|---|
| Base Score | 8.7 | 8.2 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Attack Requirements | None | Present |
| Privileges Required | None | None |
| User Interaction | None | None |
| Vulnerable System Confidentiality Impact | None | None |
| Vulnerable System Integrity Impact | None | None |
| Vulnerable System Availability Impact | High | High |
| Subsequent System Confidentiality Impact | None | None |
| Subsequent System Integrity Impact | None | None |
| Subsequent System Availability Impact | None | None |
| CVSSv4 Version | 4.0 | 4.0 |
SUSE Security Advisories:
- SUSE-SU-2026:0978-1, published 2026-03-23T16:46:25Z
- SUSE-SU-2026:0979-1, published 2026-03-23T16:46:36Z
- SUSE-SU-2026:0980-1, published 2026-03-23T16:46:54Z
- SUSE-SU-2026:0981-1, published 2026-03-23T16:47:26Z
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP7 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP7-2026-980 SUSE-SLE-Product-WE-15-SP7-2026-980 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-981 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-981 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-978 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-978 |
| SUSE Linux Enterprise High Performance Computing 15 SP7 SUSE Linux Enterprise Module for Basesystem 15 SP7 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP7-2026-980 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 |
| Patchnames: SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-980 |
| SUSE Linux Enterprise Server 15 SP4-LTSS |
| Patchnames: SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-981 |
| SUSE Linux Enterprise Server 15 SP5-LTSS |
| Patchnames: SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-978 |
| SUSE Linux Enterprise Server 15 SP6-LTSS |
| Patchnames: SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-979 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 |
| Patchnames: SUSE-SLE-Product-SLES_SAP-15-SP4-2026-981 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 |
| Patchnames: SUSE-SLE-Product-SLES_SAP-15-SP5-2026-978 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 |
| Patchnames: SUSE-SLE-Product-SLES_SAP-15-SP6-2026-979 |
| SUSE Linux Enterprise Workstation Extension 15 SP7 |
| Patchnames: SUSE-SLE-Product-WE-15-SP7-2026-980 |
| SUSE Manager Proxy LTS 4.3 |
| Patchnames: SUSE-SLE-Product-SUSE-Manager-Proxy-4.3-LTS-2026-981 |
| SUSE Manager Retail Branch Server LTS 4.3 |
| Patchnames: SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.3-LTS-2026-981 |
| SUSE Manager Server LTS 4.3 |
| Patchnames: SUSE-SLE-Product-SUSE-Manager-Server-4.3-LTS-2026-981 |
| openSUSE Leap 15.6 |
| Patchnames: openSUSE-SLE-15.6-2026-979 |
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 SP7 | strongswan | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | strongswan | Released |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | strongswan | Released |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | strongswan | Released |
| SUSE Linux Enterprise Server 15 SP7 | strongswan | Released |
| SUSE Linux Enterprise Server 16.0 | strongswan | In progress |
| SUSE Linux Enterprise Server 16.1 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | strongswan | Released |
| SUSE Linux Enterprise Server for SAP applications 16.0 | strongswan | In progress |
| SUSE Linux Enterprise Server for SAP applications 16.1 | strongswan | Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | strongswan | Released |
| openSUSE Leap 15.6 | strongswan | Released |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4 | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | strongswan | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | strongswan | Released |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | strongswan | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | strongswan | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP5 | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP4 | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | strongswan | Released |
| SUSE Linux Enterprise Server 15 SP5 | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | strongswan | Released |
| SUSE Linux Enterprise Server 15 SP6 | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | strongswan | Released |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | strongswan | Released |
| SUSE Manager Proxy 4.3 | strongswan | Affected |
| SUSE Manager Proxy LTS 4.3 | strongswan | Released |
| SUSE Manager Retail Branch Server 4.3 | strongswan | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | strongswan | Released |
| SUSE Manager Server 4.3 | strongswan | Affected |
| SUSE Manager Server LTS 4.3 | strongswan | Released |
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | strongswan | Affected |
| SUSE CaaS Platform 4.0 | strongswan | Affected |
| SUSE Enterprise Storage 6 | strongswan | Affected |
| SUSE Enterprise Storage 7 | strongswan | Affected |
| SUSE Enterprise Storage 7.1 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 12 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 12 SP1 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 12 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 12 SP3 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 12 SP4 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 15 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 15 SP1 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 15 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 15 SP3 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | strongswan | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | strongswan | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | strongswan | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | strongswan | Affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 | strongswan | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | strongswan | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | strongswan | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 | strongswan | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP1 | strongswan | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP3 | strongswan | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | strongswan | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | strongswan | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | strongswan | Affected |
| SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | strongswan | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | strongswan | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | strongswan | Affected |
| SUSE Linux Enterprise Server 12 | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP1 | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP1-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP2-BCL | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP2-ESPOS | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP2-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP3 | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP3-BCL | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP3-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP4 | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | strongswan | Affected |
| SUSE Linux Enterprise Server 12 SP4-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Server 12-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Server 15 | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP1 | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP3 | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | strongswan | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Server 15-LTSS | strongswan | Affected |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP1 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | strongswan | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | strongswan | Released |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | strongswan | Released |
| SUSE Linux Enterprise Workstation Extension 15 SP2 | strongswan | Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP3 | strongswan | Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP4 | strongswan | Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP5 | strongswan | Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP6 | strongswan | Affected |
| SUSE Manager Proxy 4.0 | strongswan | Affected |
| SUSE Manager Proxy 4.1 | strongswan | Affected |
| SUSE Manager Proxy 4.2 | strongswan | Affected |
| SUSE Manager Retail Branch Server 4.0 | strongswan | Affected |
| SUSE Manager Retail Branch Server 4.1 | strongswan | Affected |
| SUSE Manager Retail Branch Server 4.2 | strongswan | Affected |
| SUSE Manager Server 4.0 | strongswan | Affected |
| SUSE Manager Server 4.1 | strongswan | Affected |
| SUSE Manager Server 4.2 | strongswan | Affected |
| SUSE OpenStack Cloud 7 | strongswan | Affected |
| SUSE OpenStack Cloud 8 | strongswan | Affected |
| SUSE OpenStack Cloud 9 | strongswan | Affected |
| SUSE OpenStack Cloud Crowbar 8 | strongswan | Affected |
| SUSE OpenStack Cloud Crowbar 9 | strongswan | Affected |
| openSUSE Leap 15.3 | strongswan | Affected |
| openSUSE Leap 15.4 | strongswan | Released |
| openSUSE Leap 15.5 | strongswan | Released |
| Products at an unknown state of their lifecycle. | ||
| SUSE Manager Proxy 4.3 LTS | strongswan | Released |
| SUSE Manager Retail Branch Server 4.3 LTS | strongswan | Released |
| SUSE Manager Server 4.3 LTS | strongswan | Released |
SUSE Timeline for this CVE
CVE page created: Tue Mar 10 15:30:13 2026CVE page last modified: Tue Mar 24 19:54:22 2026