Use-after-free in expat - CVE-2022-43680

Vulnerability identifier: #VU68718

CSH Severity: Medium

CVSS v4.0: 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:U/U:Green

CVE-ID: CVE-2022-43680

CWE-ID: CWE-416

Exploitation vector: Remote access

Exploit availability: No public exploit available

Affected software:
expat
Amazon Linux AMI
Gentoo Linux
Debian Linux
SUSE CaaS Platform
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Linux Enterprise Micro
openSUSE Leap Micro
SUSE Enterprise Storage
Oracle Linux
IBM AIX
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Anolis OS
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux Server - TUS
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 for x86_64 - Extended Update Support
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
Oracle Solaris
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Software Development Kit
SUSE Linux Enterprise Server for SAP Applications
Slackware Linux
Ubuntu
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Desktop
SUSE Linux Enterprise Module for Basesystem
openSUSE Leap
openEuler
Fedora
Google Android
IBM Cloud Pak for Watson AIOps
Telemetry Dashboard
Storage Defender – Data Protect
Liquidware
IBM MQ Appliance
Citrix Workspace App
Webex App VDI
cflinuxfs3
ObjectScale
PowerStore T
IBM supplied MQ Advanced container images
Db2 Net Search Extender
EMC Cloud Tiering Appliance
Robotic Process Automation for Cloud Pak
IBM Tivoli Monitoring
Submariner
Migration Toolkit for Runtimes
Data Lakehouse
Service Telemetry Framework
Migration Toolkit for Virtualization
Red Hat Advanced Cluster Management for Kubernetes
IBM Watson Assistant for IBM Cloud Pak for Data
OpenShift Logging
Red Hat Migration Toolkit for Applications
IBM Rational ClearCase
Tenable Nessus
Oracle Financial Services Trade-Based Anti Money Laundering Enterprise Edition
Oracle Financial Services Behavior Detection Platform
Middleware Common Libraries and Tools
Oracle Middleware Common Libraries and Tools
Oracle HTTP Server
Enterprise Manager Base Platform
IBM MQ Operator
IBM Watson Speech Services Cartridge for IBM Cloud Pak for Data
IBM Power Hardware Management Console (HMC)
Self Node Remediation Operator
OpenShift Service Mesh
Red Hat OpenShift Serverless
OpenShift Data Foundation (formerly OpenShift Container Storage)
OpenShift API for Data Protection (OADP)
Migration Toolkit for Containers
VMware Horizon Client
Dell EMC Container Storage Modules
HPE Moonshot 1500 Chassis Manager
IBM Tivoli Network Manager (ITNM)
Red Hat OpenShift GitOps
Oracle Financial Services Currency Transaction Reporting
OpenOffice
LANTIME Operating System Firmware (LTOS)
PowerScale OneFS
Oracle Outside In Technology
Cloud Pak for Security (CP4S)
NetWorker Management Console
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
expat (Ubuntu package)
libexpat1 (Ubuntu package)
lib64expat1 (Ubuntu package)
mingw-pixman
expat
libexpat-devel
expat-debuginfo
expat-debuginfo-32bit
expat-debugsource
libexpat1
libexpat1-debuginfo
libexpat1-debuginfo-32bit
libexpat1-32bit
expat (Red Hat package)
expat-devel
expat-32bit-debuginfo
libexpat1-32bit-debuginfo
libexpat-devel-32bit
expat-help
expat (Debian package)
dev-libs/expat
mingw-expat
python3
Cisco Jabber
Oracle Database Server
Cisco Webex Meetings
HPE NonStop Virtual Tape Repository (VTR)
SINEC NMS
IBM Security Verify Access
IBM DS8000 Hardware Management Console
IBM Cloud Pak System
IBM Security SiteProtector System
Dell EMC NetWorker vProxy
Dell EMC Storage Monitoring and Reporting (SMR)
EMC ViPR SRM
IBM FileNet Content Manager
IBM HTTP Server
Dell EMC VxRail Appliance
RSA Authentication Manager

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate. A remote attacker can trigger a use-after-free error and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://github.com/libexpat/libexpat/pull/650
• https://github.com/libexpat/libexpat/pull/616
• https://github.com/libexpat/libexpat/issues/649