CVE-2023-26437: Deterred spoofing attempts can lead to authoritative servers being marked unavailable
First published: Tue Apr 04 2023(Updated: )
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.
Credit: security@open-xchange.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PowerDNS | <4.6.6 | |
| PowerDNS | >=4.7.0<4.7.5 | |
| PowerDNS | >=4.8.0<4.8.4 |
Remedy
Upgrade to PowerDNS Recursor 4.6.6, 4.7.5 or 4.8.4.
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Reference Links
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2023-02.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CN7VMRYKZHG2UDUAK326LXD3JY7NO3LR/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHPD6SIQOG7245GXFQHPUEI4AZ6Y3KD6/
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID of this issue is CVE-2023-26437.
What is the severity rating of CVE-2023-26437?
CVE-2023-26437 has a severity rating of 5.3 (medium).
How does CVE-2023-26437 affect PowerDNS Recursor?
CVE-2023-26437 in PowerDNS Recursor allows authoritative servers to be marked unavailable.
Which versions of PowerDNS Recursor are affected by CVE-2023-26437?
CVE-2023-26437 affects PowerDNS Recursor versions up to and including 4.6.5, 4.7.4, and 4.8.3.
How can I fix CVE-2023-26437?
To fix CVE-2023-26437, upgrade PowerDNS Recursor to version 4.6.6 or later, 4.7.5 or later, or 4.8.4 or later.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/author
- agent/references
- agent/title
- agent/remedy
- agent/last-modified-date
- agent/description
- agent/event
- agent/first-publish-date
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/powerdns
- canonical/powerdns
- version/powerdns/4.7.0
- version/powerdns/4.8.0