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unbound: NRDelegation attack leads to uncontrolled resource consumption (Non-Responsive Delegation Attack)

🗓️ 16 May 2023 08:37:44Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 5 Views

Unbound NRDelegation attack drives CPU and denial of service through unresponsive NS in delegation.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
FreeBSD		unbound -- Non-Responsive Delegation Attack
26 Sep 202200:00
–freebsd
IBM Security Bulletins		Security Bulletin: Multiple Security Vulnerabilities may affect IBM Robotic Process Automation for Cloud Pak.
26 Mar 202503:30
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Security Vulnerabilities may affect IBM Robotic Process Automation for Cloud Pak.
2 Feb 202303:37
–ibm
Tenable Nessus		Amazon Linux 2022 : python3-unbound, unbound, unbound-anchor (ALAS2022-2023-265)
25 Jan 202300:00
–nessus
Tenable Nessus		Amazon Linux 2023 : python3-unbound, unbound, unbound-anchor (ALAS2023-2023-078)
21 Mar 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : unbound (ALAS-2024-2467)
19 Feb 202400:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0027: unbound (ALINUX3-SA-2024:0027)
14 May 202500:00
–nessus
Tenable Nessus		AlmaLinux 9 : unbound (ALSA-2023:2370)
14 May 202300:00
–nessus
Tenable Nessus		AlmaLinux 8 : unbound (ALSA-2023:2771)
20 May 202300:00
–nessus
Tenable Nessus		CentOS 8 : unbound (CESA-2023:2771)
16 May 202300:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64python3-unbound1.16.2-5.el8python3-unbound-1.16.2-5.el8.aarch64.rpm
Red Hat Enterprise Linux8ppc64lepython3-unbound1.16.2-5.el8python3-unbound-1.16.2-5.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xpython3-unbound1.16.2-5.el8python3-unbound-1.16.2-5.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64python3-unbound1.16.2-5.el8python3-unbound-1.16.2-5.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64python3-unbound-debuginfo1.16.2-5.el8python3-unbound-debuginfo-1.16.2-5.el8.aarch64.rpm
Red Hat Enterprise Linux8i686python3-unbound-debuginfo1.16.2-5.el8python3-unbound-debuginfo-1.16.2-5.el8.i686.rpm
Red Hat Enterprise Linux8ppc64lepython3-unbound-debuginfo1.16.2-5.el8python3-unbound-debuginfo-1.16.2-5.el8.ppc64le.rpm
Red Hat Enterprise Linux8s390xpython3-unbound-debuginfo1.16.2-5.el8python3-unbound-debuginfo-1.16.2-5.el8.s390x.rpm
Red Hat Enterprise Linux8x86_64python3-unbound-debuginfo1.16.2-5.el8python3-unbound-debuginfo-1.16.2-5.el8.x86_64.rpm
Red Hat Enterprise Linux8aarch64unbound1.16.2-5.el8unbound-1.16.2-5.el8.aarch64.rpm
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21 Nov 2025 18:40Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.17.5
EPSS0.01293
SSVC
UnboundNon-Responsive DelegationHigh CPUDenial of ServiceName Servers
5