Upstream information

CVE-2025-30194 at MITRE

Description

When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.

The remedy is: upgrade to the patched 1.9.9 version.

A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.

We would like to thank Charles Howes for bringing this issue to our attention.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
  CNA (Open-Xchange) 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 v4 Scores
  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
SUSE Bugzilla entry: 1242028 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Desktop 15 SP7
SUSE Linux Enterprise High Performance Computing 15 SP7
SUSE Linux Enterprise Module for Basesystem 15 SP7
SUSE Linux Enterprise Server 15 SP7
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • dnsdist >= 1.9.10-150700.3.3.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP7-2025-1743
openSUSE Tumbleweed
  • dnsdist >= 1.9.10-2.1
Patchnames:
openSUSE-Tumbleweed-2025-15157


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Please note that this evaluation state might be work in progress, incomplete or outdated.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 dnsdist Not affected
SUSE Linux Enterprise Desktop 15 SP7 dnsdist Released
SUSE Linux Enterprise High Performance Computing 15 SP6 dnsdist Not affected
SUSE Linux Enterprise High Performance Computing 15 SP7 dnsdist Released
SUSE Linux Enterprise Module for Basesystem 15 SP6 dnsdist Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 dnsdist Released
SUSE Linux Enterprise Server 15 SP6 dnsdist Not affected
SUSE Linux Enterprise Server 15 SP7 dnsdist Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 dnsdist Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 dnsdist Released
SUSE Manager Proxy 4.3 dnsdist Not affected
SUSE Manager Retail Branch Server 4.3 dnsdist Not affected
SUSE Manager Server 4.3 dnsdist Not affected
openSUSE Leap 15.6 dnsdist Not affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4 dnsdist Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS dnsdist Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5 dnsdist Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS dnsdist Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS dnsdist Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 dnsdist Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 dnsdist Not affected
SUSE Linux Enterprise Server 15 SP3-LTSS dnsdist Not affected
SUSE Linux Enterprise Server 15 SP4 dnsdist Not affected
SUSE Linux Enterprise Server 15 SP4-LTSS dnsdist Not affected
SUSE Linux Enterprise Server 15 SP5 dnsdist Not affected
SUSE Linux Enterprise Server 15 SP5-LTSS dnsdist Not affected
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 dnsdist Not affected
SUSE Enterprise Storage 7.1 dnsdist Not affected
SUSE Linux Enterprise Desktop 15 SP4 dnsdist Not affected
SUSE Linux Enterprise Desktop 15 SP5 dnsdist Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS dnsdist Not affected
SUSE Linux Enterprise Real Time 15 SP4 dnsdist Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS dnsdist Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS dnsdist Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 dnsdist Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 dnsdist Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 dnsdist Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 dnsdist Not affected
openSUSE Leap 15.4 dnsdist Not affected
openSUSE Leap 15.5 dnsdist Not affected


SUSE Timeline for this CVE

CVE page created: Tue Apr 29 14:00:01 2025
CVE page last modified: Thu May 29 16:11:57 2025