Resource exhaustion in Dnsmasq - CVE-2023-28450

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Main Vulnerability Database Vulnerabilities #VU75389

Resource exhaustion in Dnsmasq - CVE-2023-28450

Published: April 20, 2023


Vulnerability identifier: #VU75389
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-2023-28450
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 application does not properly perform fragmentation of UDP packets. A remote attacker can trigger resource exhaustion by sending overly large DNS UDP packets.


Affected software

Dnsmasq
Gentoo Linux
SUSE Linux Enterprise Desktop 15 SP4
Oracle Linux
Amazon Linux AMI
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Manager Proxy
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
openSUSE Leap Micro
Anolis OS
HPE Helion Openstack
SUSE OpenStack Cloud
SUSE OpenStack Cloud Crowbar
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Oracle Solaris
Ubuntu
Basesystem Module
openSUSE Leap
Fedora
Dell EMC VxRail Appliance
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
dnsmasq-base (Ubuntu package)
dnsmasq
dnsmasq-utils
dnsmasq-debuginfo
dnsmasq-debugsource
dnsmasq-utils-debuginfo
dnsmasq (Red Hat package)
dnsmasq-langpack
dnsmasq-doc
net-dns/dnsmasq
APEX Cloud Platform for Microsoft Azure
OpenManage Network Integration (OMNI)
APEX Cloud Platform for Red Hat OpenShift
IBM Security Verify Governance
Red Hat OpenShift Container Platform

How to mitigate CVE-2023-28450

Install updates from vendor's website.

Dnsmasq - update to 2.90
Dell EMC VxRail Appliance - update to 8.321
dnsmasq-base (Ubuntu package) - addressed in versions Ubuntu Pro, 2.79-1ubuntu0.7, 2.80-1.1ubuntu1.7, 2.86-1.1ubuntu0.3, 2.86-1.1ubuntu2.1, 2.90-0ubuntu0.20.04.1, 2.90-0ubuntu0.22.04.1, 2.90-0ubuntu0.23.10.1
APEX Cloud Platform for Microsoft Azure - update to 01.04.01.00
dnsmasq - addressed in versions 2.76-16.17, 2.86-10
dnsmasq - addressed in versions 2.76-17, 2.79-27, 2.79-31.0.1, 2.89-1
dnsmasq-utils - addressed in versions 2.76-17, 2.79-27, 2.79-31.0.1, 2.89-1
dnsmasq-debuginfo - addressed in versions 2.78-18.21.1, 2.86-150100.7.23.1, 2.90-150400.16.3.1
dnsmasq - addressed in versions 2.78-18.21.1, 2.86-150100.7.23.1, 2.90-150400.16.3.1
dnsmasq-debugsource - addressed in versions 2.78-18.21.1, 2.86-150100.7.23.1, 2.90-150400.16.3.1
dnsmasq-utils - addressed in versions 2.78-18.21.1, 2.90-150400.16.3.1
dnsmasq-utils-debuginfo - addressed in versions 2.78-18.21.1, 2.90-150400.16.3.1
dnsmasq (Red Hat package) - addressed in versions 2.79-21.el8_6.5, 2.79-26.el8_8.4, 2.79-31.el8, 2.85-6.el9_2.4, 2.85-14.el9
dnsmasq-langpack - update to 2.89-1
dnsmasq-doc - update to 2.89-1
dnsmasq - addressed in versions 2.89-2.fc37, 2.89-2.fc38
net-dns/dnsmasq - update to 2.90
APEX Cloud Platform for Red Hat OpenShift - update to 03.02.04.00
OpenManage Network Integration (OMNI) - update to 3.7
Red Hat OpenShift Container Platform - addressed in versions 4.12.61, 4.13.45, 4.14.32, 4.14.33, 4.16.1
IBM Security Verify Governance - update to 10.0.2.0.4

External References

Related Security Bulletins