Resource exhaustion in dnsdist - CVE-2025-30193
Published: May 21, 2025
Vulnerability identifier: #VU109600
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2025-30193
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of incoming TCP connections from the client. A remote attacker can initiate a crafted TCP exchange and perform a denial of service (DoS) attack through stack exhaustion.
Affected software
dnsdist
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Enterprise Storage
Fedora
Basesystem Module
openSUSE Leap
Ubuntu
dnsdist (Ubuntu package)
dnsdist
dnsdist-debugsource
dnsdist-debuginfo
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Enterprise Storage
Fedora
Basesystem Module
openSUSE Leap
Ubuntu
dnsdist (Ubuntu package)
dnsdist
dnsdist-debugsource
dnsdist-debuginfo
How to mitigate CVE-2025-30193
Install update from vendor's website.
dnsdist - update to 1.9.10
dnsdist (Ubuntu package) - addressed in versions 1.6.1-1ubuntu0.1~esm2, 1.8.3-2ubuntu0.1~esm1, 1.9.10-1ubuntu0.1
dnsdist - addressed in versions 1.8.0-150100.3.8.1, 1.8.0-150400.9.6.1, 1.9.10-150700.3.3.1
dnsdist-debugsource - addressed in versions 1.8.0-150100.3.8.1, 1.8.0-150400.9.6.1, 1.9.10-150700.3.3.1
dnsdist-debuginfo - addressed in versions 1.8.0-150100.3.8.1, 1.8.0-150400.9.6.1, 1.9.10-150700.3.3.1
dnsdist - addressed in versions 1.9.10-1.el9, 1.9.10-1.fc41, 1.9.10-1.fc42
dnsdist (Ubuntu package) - addressed in versions 1.6.1-1ubuntu0.1~esm2, 1.8.3-2ubuntu0.1~esm1, 1.9.10-1ubuntu0.1
dnsdist - addressed in versions 1.8.0-150100.3.8.1, 1.8.0-150400.9.6.1, 1.9.10-150700.3.3.1
dnsdist-debugsource - addressed in versions 1.8.0-150100.3.8.1, 1.8.0-150400.9.6.1, 1.9.10-150700.3.3.1
dnsdist-debuginfo - addressed in versions 1.8.0-150100.3.8.1, 1.8.0-150400.9.6.1, 1.9.10-150700.3.3.1
dnsdist - addressed in versions 1.9.10-1.el9, 1.9.10-1.fc41, 1.9.10-1.fc42