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CVE-2023-26437

Deterred spoofing attempts can lead to authoritative servers being marked unavailable

Published: Apr 4, 2023Updated: Feb 13, 2025 Sources: CVE List NVD BDUNVD-CWE-noinfo
3.4LOW
NVD MITRE
EPSS Score
0.6%
Top 53.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:CC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

NVD-CWE-noinfoCWE-400

Affected Products

PowerDNS
oss-project·DKaka powerdns authoritative, powerdns recursor, dnsdist
RecursorOn-premNetwork Device
Networking Infrastructure / dns-dhcp-ntp
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
PowerDNS.COM BV
commercial·NLaka powerdns
PowerDNS RecursorOn-prem
Networking Infrastructure / dns-dhcp-ntp
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2023-26437?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2023-02.html
docs.powerdns.com
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CN7VMRYKZHG2UDUAK326LXD3JY7NO3LR/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHPD6SIQOG7245GXFQHPUEI4AZ6Y3KD6/
lists.fedoraproject.org
and 4 more references View all →

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