#VU74176 Insufficient verification of data authenticity in PowerDNS Recursor - CVE-2023-26437

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Main Vulnerability Database Vulnerabilities #VU74176

#VU74176 Insufficient verification of data authenticity in PowerDNS Recursor - CVE-2023-26437

Published: March 29, 2023


Vulnerability identifier: #VU74176
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-26437
CWE-ID: CWE-345
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
PowerDNS Recursor
Software vendor:
PowerDNS.COM B.V.

Description

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

The vulnerability exists in the code responsible for protection against spoofing attacks. A remote attacker can send specially crafted DNS queries with spoofed IP address to force the PowerDNS Recursor to mark specific authoritative servers as not available, leading to a denial of service condition.


Remediation

Install updates from vendor's website.

External links