Upstream information
Description
A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | CNA (Red Hat) | 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 | SUSE |
|---|---|
| Base Score | 8.7 |
| 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 |
| 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 | High |
| Subsequent System Confidentiality Impact | None |
| Subsequent System Integrity Impact | None |
| Subsequent System Availability Impact | None |
| CVSSv4 Version | 4.0 |
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Please note that this evaluation state might be work in progress, incomplete or outdated.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 High Performance Computing 15 SP7 | 389-ds | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP7 | 389-ds | Affected |
| SUSE Linux Enterprise Server 16.0 | 389-ds | Affected |
| SUSE Linux Enterprise Server 16.1 | 389-ds | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | 389-ds | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | 389-ds | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | 389-ds | Affected |
| openSUSE Leap 16.0 | 389-ds | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4 | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | 389-ds | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | 389-ds | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP4 | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP5 | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP6 | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | 389-ds | Affected |
| SUSE Manager Proxy 4.3 | 389-ds | Affected |
| SUSE Manager Proxy LTS 4.3 | 389-ds | Affected |
| SUSE Manager Retail Branch Server 4.3 | 389-ds | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | 389-ds | Affected |
| SUSE Manager Server 4.3 | 389-ds | Affected |
| SUSE Manager Server LTS 4.3 | 389-ds | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | 389-ds | Affected |
| SUSE Enterprise Storage 6 | 389-ds | Affected |
| SUSE Enterprise Storage 7 | 389-ds | Affected |
| SUSE Enterprise Storage 7.1 | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | 389-ds | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | 389-ds | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | 389-ds | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | 389-ds | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | 389-ds | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | 389-ds | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | 389-ds | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP1 | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP2 | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP3 | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | 389-ds | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | 389-ds | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | 389-ds | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | 389-ds | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | 389-ds | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | 389-ds | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | 389-ds | Affected |
| SUSE Manager Proxy 4.0 | 389-ds | Affected |
| SUSE Manager Proxy 4.1 | 389-ds | Affected |
| SUSE Manager Proxy 4.2 | 389-ds | Affected |
| SUSE Manager Retail Branch Server 4.0 | 389-ds | Affected |
| SUSE Manager Retail Branch Server 4.1 | 389-ds | Affected |
| SUSE Manager Retail Branch Server 4.2 | 389-ds | Affected |
| SUSE Manager Server 4.0 | 389-ds | Affected |
| SUSE Manager Server 4.1 | 389-ds | Affected |
| SUSE Manager Server 4.2 | 389-ds | Affected |
| openSUSE Leap 15.3 | 389-ds | Affected |
| openSUSE Leap 15.4 | 389-ds | Affected |
| openSUSE Leap 15.5 | 389-ds | Affected |
| openSUSE Leap 15.6 | 389-ds | Affected |
| Container Status | ||
| suse/389-ds | 389-ds | Affected |
SUSE Timeline for this CVE
CVE page created: Wed May 20 12:04:06 2026CVE page last modified: Wed May 20 15:32:11 2026