Resource exhaustion in expat - CVE-2021-45960

Vulnerability identifier: #VU59642

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-2021-45960

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The vulnerability exists due to application does not properly control consumption of internal resources in the storeAtts() function in xmlparse.c. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

expat
AFF66X FW
AFS66X-S
AFS660-C
AFS66X-B
AFS670-V20
AFR677
AFS67X
AFS65X
Amazon Linux AMI
Gentoo Linux
SUSE CaaS Platform
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE MicroOS
SUSE Enterprise Storage
Anolis OS
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
CentOS
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Scientific Computing
IBM AIX
Red Hat Enterprise Linux for ARM 64
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
HPE Helion Openstack
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Server - AUS
SUSE Linux Enterprise Point of Sale
SUSE Linux Enterprise Debuginfo
SUSE Linux Enterprise Server
Oracle Solaris
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Software Development Kit
Slackware Linux
Ubuntu
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Module for Basesystem
Junos OS
openEuler
API Manager
Red Hat OpenShift GitOps
IBM QRadar Network Security
IBM QRadar Network Packet Capture
API Gateway
JBoss Core Services
cflinuxfs3
Telemetry Dashboard
Storage Defender – Data Protect
Liquidware
Citrix Workspace App
Webex App VDI
EMC ECS
XtremIO X2
jbcs-httpd24-openssl-pkcs11 (Red Hat package)
jbcs-httpd24-openssl-chil (Red Hat package)
jbcs-httpd24-brotli (Red Hat package)
jbcs-httpd24-apr-util (Red Hat package)
jbcs-httpd24-apr (Red Hat package)
jbcs-httpd24-mod_http2 (Red Hat package)
jbcs-httpd24-nghttp2 (Red Hat package)
jbcs-httpd24-mod_md (Red Hat package)
expat (Debian package)
jbcs-httpd24-httpd (Red Hat package)
jbcs-httpd24-mod_security (Red Hat package)
jbcs-httpd24-jansson (Red Hat package)
jbcs-httpd24-curl (Red Hat package)
lib64expat1 (Ubuntu package)
jbcs-httpd24-mod_proxy_cluster (Red Hat package)
expat-debuginfo
expat-debugsource
expat
libexpat1
libexpat1-32bit
expat-static
expat-devel
expat (Red Hat package)
expat-debuginfo-32bit
libexpat1-debuginfo
libexpat-devel
libexpat1-debuginfo-32bit
libexpat1 (Ubuntu package)
expat-32bit-debuginfo
libexpat1-32bit-debuginfo
expat-help
dev-libs/expat
mozjs78-debuginfo
mozjs78-help
mozjs78-devel
mozjs78-debugsource
mozjs78
firefox-debuginfo
mozilla-crashreporter-firefox-debuginfo
firefox-debugsource
firefox
Cloud Pak for Security (CP4S)
IBM Qradar SIEM
NetWorker Management Console
IBM Netezza Performance Portal
Red Hat Advanced Cluster Management for Kubernetes
Tenable Nessus
IBM Rational ClearCase
IBM Netezza Analytics for NPS
IBM Tivoli Monitoring
Steel Belted Radius Carrier Edition
IBM Cloud Pak System
IBM Netezza Analytics
Nessus Network Monitor
VMware Horizon Client
Migration Toolkit for Containers
SecurID Authentication Manager
Cisco Jabber
Cisco Webex Meetings
Red Hat OpenShift Serverless
SINEMA Remote Connect Server
Dell EMC Unity Operating Environment (OE)
Dell EMC Unity VSA Operating Environment (OE)
Dell EMC Unity XT Operating Environment (OE)
Juniper Junos Space
Contrail Networking

Install updates from vendor's website.

expat - update to 2.4.3
API Manager - update to August 2022
API Gateway - update to August 2022
cflinuxfs3 - update to 0.274.0
jbcs-httpd24-openssl-pkcs11 (Red Hat package) - addressed in versions 0.4.10-31.el7jbcs, 0.4.10-31.el8jbcs
jbcs-httpd24-openssl-chil (Red Hat package) - addressed in versions 1.0.0-16.el7jbcs, 1.0.0-16.el8jbcs
Telemetry Dashboard - update to 1.1.0.6 on Thin OS 2405
jbcs-httpd24-brotli (Red Hat package) - addressed in versions 1.0.9-2.el7jbcs, 1.0.9-2.el8jbcs
Red Hat OpenShift GitOps - addressed in versions 1.2.3, 1.3.6, 1.4.4
jbcs-httpd24-apr-util (Red Hat package) - addressed in versions 1.6.1-98.el7jbcs, 1.6.1-98.el8jbcs
jbcs-httpd24-apr (Red Hat package) - addressed in versions 1.7.0-6.el7jbcs, 1.7.0-6.el8jbcs
Cloud Pak for Security (CP4S) - update to 1.10.7.0
jbcs-httpd24-mod_http2 (Red Hat package) - addressed in versions 1.15.19-17.el7jbcs, 1.15.19-17.el8jbcs
jbcs-httpd24-nghttp2 (Red Hat package) - addressed in versions 1.43.0-10.el7jbcs, 1.43.0-10.el8jbcs
Storage Defender – Data Protect - update to 2.1.4
jbcs-httpd24-mod_md (Red Hat package) - addressed in versions 2.4.0-15.el7jbcs, 2.4.0-15.el8jbcs
IBM Netezza Performance Portal - update to 2.1.1.12
expat (Debian package) - addressed in versions 2.2.6-2+deb10u2, 2.2.10-2+deb11u1
IBM Cloud Pak System - update to 2.3.3.5
Red Hat Advanced Cluster Management for Kubernetes - addressed in versions 2.3.8, 2.4.3
jbcs-httpd24-httpd (Red Hat package) - addressed in versions 2.4.51-28.el7jbcs, 2.4.51-28.el8jbcs
jbcs-httpd24-mod_security (Red Hat package) - addressed in versions 2.9.3-19.el7jbcs, 2.9.3-19.el8jbcs
jbcs-httpd24-jansson (Red Hat package) - addressed in versions 2.14-1.el7jbcs, 2.14-1.el8jbcs
IBM Netezza Analytics - update to 3.4.1
IBM QRadar Network Security - addressed in versions 5.4.0.16, 5.5.0.11
Nessus Network Monitor - update to 6.2.1
Liquidware - update to 6.7.0.2.2 on Thin OS 2405
IBM Qradar SIEM - addressed in versions 7.3.3 Fix Pack 12, 7.4.3 Fix Pack 6, 7.5.0 Update Pack 2
jbcs-httpd24-curl (Red Hat package) - addressed in versions 7.83.1-6.el7jbcs, 7.83.1-6.el8jbcs
Tenable Nessus - addressed in versions 8.15.3, 10.1.1
IBM Rational ClearCase - addressed in versions 9.0.1.14, 9.0.2.6, 9.1.0.3
SecurID Authentication Manager - update to 8.6 Patch 3
IBM Netezza Analytics for NPS - update to 11.2.25
Cisco Jabber - update to 14.3.0.308378.11 on Thin OS 2405
Junos OS - addressed in versions 12.3X48-D95, 12.3R12-S15, 13.2X51-D40, 14.1X53-D30, 14.1X53-D53, 15.1x49-D190, 15.1R7-S6, 16.1R7-S6, 16.2R3, 17.1R2-S11, 17.1R3-S1, 17.2R1-S9, 17.2R2-S8, 17.2R3-S3, 17.3R2-S5, 17.3R3-S6, 17.4R2-S7, 17.4R3, 18.1R3-S8, 18.2R2-S7, 18.2R3-S1, 18.3R1-S5, 18.3R2-S2, 18.3R3, 18.4R1-S4, 18.4R2-S1, 18.4R2-S10, 18.4R3, 18.4R3-S10, 19.1R1-S3, 19.1R2, 19.1R3-S7, 19.1R3-S9, 19.2R1-S1, 19.2R1-S8, 19.2R2, 19.2R3-S4, 19.3R1, 19.3R3-S4, 19.3R3-S6, 19.4R2-S6, 19.4R2-S7, 19.4R3-S6, 19.4R3-S9, 19.4R3-S10, 20.1R3-S3, 20.1R3-S4, 20.2R3-S3, 20.2R3-S5, 20.2R3-S6, 20.3R3-S3, 20.3R3-S4, 20.3R3-S6, 20.4R3, 20.4R3-S4, 20.4R3-S5, 20.4R3-S8, 21.1R2, 21.1R3-S3, 21.1R3-S4, 21.2R1, 21.2R3-S1, 21.2R3-S4, 21.2R3-S6, 21.3R3-S1, 21.3R3-S3, 21.3R3-S5, 21.4R2, 21.4R3-S1, 21.4R3-S4, 22.1R2, 22.1R2-S2, 22.1R3, 22.1R3-S3, 22.2R1, 22.2R2, 22.2R2-S1, 22.2R3, 22.2R3-S1, 22.3R1, 22.3R1-S1, 22.3R2, 22.3R2-S2, 22.3R3, 22.4R1, 22.4R2-S1, 22.4R3, 23.2R1
Citrix Workspace App - update to 24.2.0.65.17 on Thin OS 2405
Webex App VDI - update to 44.2.0.28744.1 on Thin OS 2405
Cisco Webex Meetings - update to 44.2.0.76.2 on Thin OS 2405
VMware Horizon Client - update to 2312.1.8.12.1.5 on Thin OS 2405
lib64expat1 (Ubuntu package) - update to UA Infra or UA Desktop
Red Hat OpenShift Serverless - update to 1
jbcs-httpd24-mod_proxy_cluster (Red Hat package) - addressed in versions 1.3.17-9.el7jbcs, 1.3.17-9.el8jbcs
Migration Toolkit for Containers - addressed in versions 1.5.4, 1.7.1
expat-debuginfo - addressed in versions 2.0.1-88.42.12.1, 2.1.0-21.12.1, 2.2.5-3.9.1
expat-debugsource - addressed in versions 2.0.1-88.42.12.1, 2.1.0-21.12.1, 2.2.5-3.9.1
expat - addressed in versions 2.0.1-88.42.12.1, 2.1.0-21.12.1, 2.2.5-3.9.1
libexpat1 - addressed in versions 2.0.1-88.42.12.1, 2.1.0-21.12.1, 2.2.5-3.9.1
libexpat1-32bit - addressed in versions 2.0.1-88.42.12.1, 2.1.0-21.12.1, 2.2.5-3.9.1
expat - addressed in versions 2.1.0-14, 2.2.5-4
expat-static - update to 2.1.0-14
expat-devel - addressed in versions 2.1.0-14, 2.2.5-4
expat (Red Hat package) - addressed in versions 2.1.0-14.el7_9, 2.2.5-4.el8_5.3, 2.2.10-1.el8_4
expat-debuginfo-32bit - update to 2.1.0-21.12.1
libexpat1-debuginfo - addressed in versions 2.1.0-21.12.1, 2.2.5-3.9.1
libexpat-devel - addressed in versions 2.1.0-21.12.1, 2.2.5-3.9.1
libexpat1-debuginfo-32bit - update to 2.1.0-21.12.1
libexpat1 (Ubuntu package) - addressed in versions 2.2.5-3ubuntu0.4, 2.2.9-1ubuntu0.2, 2.4.1-2ubuntu0.1
expat-32bit-debuginfo - update to 2.2.5-3.9.1
libexpat1-32bit-debuginfo - update to 2.2.5-3.9.1
expat-debugsource - update to 2.2.9-4
expat-devel - update to 2.2.9-4
expat-help - update to 2.2.9-4
expat-debuginfo - update to 2.2.9-4
expat - update to 2.2.9-4
dev-libs/expat - update to 2.4.9
JBoss Core Services - update to 2.4.51
expat - update to 2.5.0-1
SINEMA Remote Connect Server - update to 3.1
EMC ECS - update to 3.7.0.2
Dell EMC Unity Operating Environment (OE) - update to 5.2.0.0.5.173
Dell EMC Unity VSA Operating Environment (OE) - update to 5.2.0.0.5.173
Dell EMC Unity XT Operating Environment (OE) - update to 5.2.0.0.5.173
IBM Tivoli Monitoring - update to 6.3.0.7 Plus Service Pack 5
XtremIO X2 - update to 6.4.1-11
Steel Belted Radius Carrier Edition - update to 8.6.0R16
AFR677 - update to 09.1.08 FW
AFS67X - update to 09.1.08 FW
AFS65X - update to 09.1.08 FW
NetWorker Management Console - update to 19.12.0.1
Juniper Junos Space - update to 22.2R1
mozjs78-debuginfo - update to 78.4.0-9
mozjs78-help - update to 78.4.0-9
mozjs78-devel - update to 78.4.0-9
mozjs78-debugsource - update to 78.4.0-9
mozjs78 - update to 78.4.0-9
firefox-debuginfo - update to 79.0-12
mozilla-crashreporter-firefox-debuginfo - update to 79.0-12
firefox-debugsource - update to 79.0-12
firefox - update to 79.0-12
Contrail Networking - update to 2011.L5

• https://github.com/libexpat/libexpat/issues/531
• https://github.com/libexpat/libexpat/pull/534
• https://bugzilla.mozilla.org/show_bug.cgi?id=1217609

• Multiple vulnerabilities in libexpat
• Slackware Linux update for expat
• Multiple vulnerabilities in Tenable Nessus
• Debian update for expat
• Multiple vulnerabilities in cflinuxfs3
• Red Hat Enterprise Linux 8 update for expat
• Multiple vulnerabiltiies in IBM Netezza Performance Portal
• Multiple vulnerabilities in Red Hat OpenShift GitOps 1.2
• Multiple vulnerabilities in Red Hat OpenShift GitOps 1.4
• Multiple vulnerabilities in Red Hat OpenShift GitOps 1.3
• Red Hat Enterprise Linux 7 update for expat
• Multiple vulnerabilities in Red Hat Advanced Cluster Management for Kubernetes 2.3
• CentOS 7 update for expat
• Multiple vulnerabilities in Oracle Solaris
• Multiple vulnerabilities in IBM Netezza Analytics for NPS
• Multiple vulnerabilities in IBM Netezza Analytics
• Multiple vulnerabilities in IBM Tivoli Monitoring
• Amazon Linux AMI update for expat
• Multiple vulnerabilities in Siemens SINEMA Remote Connect Server
• Ubuntu update for expat
• Multiple vulnerabilities in IBM QRadar Network Packet Capture
• Multiple vulnerabilities in IBM QRadar Network Security
• Multiple vulnerabilities in IBM Rational ClearCase
• Multiple vulnerabilities in IBM QRadar SIEM
• IBM AIX update for Python
• Multiple vulnerabilities in IBM Cloud Pak System third-party components
• Multiple vulnerabilities in IBM QRadar SIEM
• Multiple vulnerabilities in Dell Elastic Cloud Storage (ECS)
• Gentoo update for Expat
• Multiple vulnerabilities in Juniper Networks Contrail Networking
• Multiple vulnerabilities in Junos Space
• Multiple vulnerabilities in Juniper Networks Steel Belted Radius Carrier Edition
• Multiple vulnerabilities in Red Hat JBoss Core Services
• Multiple vulnerabilities in IBM Cloud Pak for Security (CP4S)
• SUSE update for expat
• SUSE update for expat
• SUSE update for expat
• Multiple vulnerabilities in API Gateway and API Manager
• Multiple vulnerabilities in Junos OS
• Multiple vulnerabilities in Nessus Network Monitor
• Multiple vulnerabilities in Dell XtremIO X2
• Multiple vulnerabilities in Dell Unity, Dell UnityVSA, and Dell Unity XT
• Multiple vulnerabilities in Hitachi Energy AFS65x, AFF66x, AFS67x and AFR67x Series Products
• openEuler update for expat
• openEuler 20.03 LTS SP1 update for firefox
• openEuler 20.03 LTS SP3 update for firefox
• Multiple vulnerabilities in Dell ThinOS
• openEuler 20.03 LTS SP4 update for mozjs78
• Amazon Linux AMI update for expat
• Multiple vulnerabilities in Migration Toolkit for Containers 1.5
• Multiple vulnerabilities in Red Hat Advanced Cluster Management for Kubernetes 2.4
• Multiple vulnerabilities in Migration Toolkit for Containers 1.7
• Multiple vulnerabilities in Red Hat OpenShift Serverless
• Anolis OS update for expat
• Anolis OS update for expat
• SecurID Authentication Manager update for third-party components
• Dell NetWorker Management Console update for third-party components
• Red Hat Enterprise Linux 8 update for expat
• Multiple vulnerabilities in IBM Storage Defender - Data Protect