Input validation error in c-ares - CVE-2021-3672

Vulnerability identifier: #VU56967

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-3672

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to hijack domains.

The vulnerability exists due to insufficient validation of host names, returned by the DNS server. A remote attacker can pass specially crafted input to the application and perform domain hijacking.

c-ares
Amazon Linux AMI
Debian Linux
Arch Linux
Gentoo Linux
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE CaaS Platform
SUSE Enterprise Storage
Red Hat Enterprise Linux for x86_64
Anolis OS
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
HPE Helion Openstack
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
SUSE Linux Enterprise Point of Sale
SUSE Linux Enterprise Debuginfo
SUSE Linux Enterprise Server
SUSE Linux Enterprise Module for Web Scripting
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Workstation Extension
SUSE Linux Enterprise Software Development Kit
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Module for Basesystem
Ubuntu
openEuler
Fedora
BIG-IP
Red Hat Advanced Cluster Security for Kubernetes
pycares
IBM QRadar Data Synchronization App
SINEC INS
libcares2
libcares2-debuginfo
libcares2-debugsource
libcares2-debuginfo-32bit
libcares-devel
libcares2-32bit
libc-ares2 (Ubuntu package)
c-ares
c-ares-devel
c-ares (Red Hat package)
c-ares (Debian package)
c-ares-debugsource
c-ares-debuginfo
c-ares-help
mingw-c-ares
nodejs-nodemon
net-dns/c-ares
rh-nodejs12-nodejs-nodemon (Red Hat package)
rh-nodejs14-nodejs-nodemon (Red Hat package)
python-pycares
npm
nodejs10
nodejs10-debuginfo
nodejs10-debugsource
nodejs10-devel
npm10
nodejs10-docs
nodejs
nodejs-devel
nodejs-full-i18n
nodejs-docs
rh-nodejs12-nodejs (Red Hat package)
nodejs12-debugsource
nodejs12
nodejs12-debuginfo
nodejs12-devel
npm12
nodejs12-docs
rh-nodejs14-nodejs (Red Hat package)
nodejs14-devel
npm14
nodejs14-docs
nodejs14-debuginfo
nodejs14
nodejs14-debugsource
nodejs-packaging
Red Hat OpenShift Container Platform

Install updates from vendor's website.

c-ares - update to 1.17.2
BIG-IP - update to 17.5.1.1
Red Hat Advanced Cluster Security for Kubernetes - addressed in versions 3.68.2, 3.69.2, 3.70
pycares - update to 4.2.0
SINEC INS - update to 1.0.1.1
libcares2 - addressed in versions 1.7.4-7.10.3.1, 1.9.1-9.7.1, 1.17.1+20200724-3.14.1
libcares2-debuginfo - addressed in versions 1.7.4-7.10.3.1, 1.9.1-9.7.1, 1.17.1+20200724-3.14.1
libcares2-debugsource - addressed in versions 1.7.4-7.10.3.1, 1.9.1-9.7.1
libcares2-debuginfo-32bit - addressed in versions 1.7.4-7.10.3.1, 1.9.1-9.7.1
libcares-devel - update to 1.9.1-9.7.1
libcares2-32bit - update to 1.9.1-9.7.1
libc-ares2 (Ubuntu package) - addressed in versions 1.10.03ubuntu0.2+esm1, 1.14.0-1ubuntu0.1, 1.15.0-1ubuntu0.1, 1.17.1-1ubuntu0.1
c-ares - update to 1.13.0-6
c-ares-devel - update to 1.13.0-6
c-ares (Red Hat package) - update to 1.13.0-6.el8
c-ares (Debian package) - update to 1.14.0-1+deb10u1
c-ares - update to 1.16.1-3
c-ares-debugsource - update to 1.16.1-3
c-ares-debuginfo - update to 1.16.1-3
c-ares-devel - update to 1.16.1-3
c-ares-help - update to 1.16.1-3
c-ares-debugsource - update to 1.17.1+20200724-3.14.1
c-ares-devel - update to 1.17.1+20200724-3.14.1
c-ares - update to 1.17.2-1
c-ares - addressed in versions 1.17.2-1.fc33, 1.17.2-1.fc34
mingw-c-ares - addressed in versions 1.17.2-1.fc33, 1.17.2-1.fc34
nodejs-nodemon - addressed in versions 1.18.3-1, 2.0.3-1
net-dns/c-ares - update to 1.19.0
rh-nodejs12-nodejs-nodemon (Red Hat package) - update to 2.0.3-5.el7
rh-nodejs14-nodejs-nodemon (Red Hat package) - update to 2.0.3-5.el7
IBM QRadar Data Synchronization App - update to 3.0.1
python-pycares - update to 4.0.0-5.fc35
Red Hat OpenShift Container Platform - update to 4.11.0
npm - addressed in versions 6.14.14-1.12.22.5.1, 6.14.14-1.14.17.5.1
nodejs10 - addressed in versions 10.24.1-1.39.2, 10.24.1-1.42.2
nodejs10-debuginfo - addressed in versions 10.24.1-1.39.2, 10.24.1-1.42.2
nodejs10-debugsource - update to 10.24.1-1.39.2
nodejs10-devel - addressed in versions 10.24.1-1.39.2, 10.24.1-1.42.2
npm10 - addressed in versions 10.24.1-1.39.2, 10.24.1-1.42.2
nodejs10-docs - addressed in versions 10.24.1-1.39.2, 10.24.1-1.42.2
nodejs - addressed in versions 12.22.5-1, 14.17.5-1
nodejs-devel - addressed in versions 12.22.5-1, 14.17.5-1
nodejs-full-i18n - addressed in versions 12.22.5-1, 14.17.5-1
nodejs-docs - addressed in versions 12.22.5-1, 14.17.5-1
rh-nodejs12-nodejs (Red Hat package) - update to 12.22.5-1.el7
nodejs12-debugsource - addressed in versions 12.22.5-1.35.1, 12.22.5-4.19.1
nodejs12 - addressed in versions 12.22.5-1.35.1, 12.22.5-4.19.1
nodejs12-debuginfo - addressed in versions 12.22.5-1.35.1, 12.22.5-4.19.1
nodejs12-devel - addressed in versions 12.22.5-1.35.1, 12.22.5-4.19.1
npm12 - addressed in versions 12.22.5-1.35.1, 12.22.5-4.19.1
nodejs12-docs - addressed in versions 12.22.5-1.35.1, 12.22.5-4.19.1
rh-nodejs14-nodejs (Red Hat package) - update to 14.17.5-1.el7
nodejs14-devel - addressed in versions 14.17.5-5.15.5, 14.17.5-6.15.3
npm14 - addressed in versions 14.17.5-5.15.5, 14.17.5-6.15.3
nodejs14-docs - addressed in versions 14.17.5-5.15.5, 14.17.5-6.15.3
nodejs14-debuginfo - addressed in versions 14.17.5-5.15.5, 14.17.5-6.15.3
nodejs14 - addressed in versions 14.17.5-5.15.5, 14.17.5-6.15.3
nodejs14-debugsource - addressed in versions 14.17.5-5.15.5, 14.17.5-6.15.3
nodejs-packaging - addressed in versions 17-3, 23-3

• https://bugzilla.redhat.com/show_bug.cgi?id=1988342
• https://c-ares.haxx.se/adv_20210810.html

• Domain hijacking in c-ares
• Amazon Linux AMI update for c-ares
• Multiple vulnerabilities in Siemens SINEC INS
• Red Hat Enterprise Linux 8 update for c-ares
• Multiple vulnerabilities in Red Hat Advanced Cluster Security for Kubernetes
• Multiple vulnerabilities in IBM QRadar Data Synchronization App
• SUSE update for libcares2
• SUSE update for libcares2
• SUSE update for nodejs10
• SUSE update for nodejs12
• SUSE update for nodejs12
• SUSE update for nodejs10
• SUSE update for nodejs14
• SUSE update for nodejs14
• Ubuntu update for c-ares
• Ubuntu update for c-ares
• Multiple vulnerabilities in Red Hat Advanced Cluster Security for Kubernetes (RHACS)
• Multiple vulnerabilities in Red Hat Advanced Cluster Security for Kubernetes (RHACS)
• Debian update for c-ares
• Multiple vulnerabilities in OpenShift Container Platform 4.11
• Red Hat Software Collections update for rh-nodejs14-nodejs and rh-nodejs14-nodejs-nodemon
• Red Hat Software Collections update for rh-nodejs12-nodejs and rh-nodejs12-nodejs-nodemon
• SUSE update for c-ares
• Arch Linux update for c-ares
• Gentoo update for c-ares
• openEuler update for c-ares
• Gentoo update for Node.js
• Red Hat Enterprise Linux 8 update for the nodejs:12 module
• Red Hat Enterprise Linux 8 update for the nodejs:12 module
• Red Hat Enterprise Linux 8 update for the nodejs:12 module
• Red Hat Enterprise Linux 8 update for the nodejs:14 module
• Fedora 34 update for mingw-c-ares
• Fedora 33 update for mingw-c-ares
• Fedora 33 update for c-ares
• Fedora 34 update for c-ares
• Fedora 35 update for python-pycares
• Anolis OS update for c-ares
• Anolis OS update for nodejs:12 (Anolis OS 8.4) module
• Anolis OS update for nodejs:14 module
• Anolis OS update for nodejs:12 (Anolis OS 8.2) module
• F5 BIG-IP update for iAppsLX/iRulesLX
• pycares update for c-ares