Main Vulnerability Database Vulnerabilities #VU111723

Input validation error in PowerDNS Authoritative and PowerDNS Recursor - CVE-2015-5470

Published: November 4, 2015 / Updated: June 21, 2025

Vulnerability identifier: #VU111723

CSH Severity: Medium

CVSS v4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2015-5470

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (CPU consumption or crash) via a request with a long name that refers to itself.

Affected software

PowerDNS Authoritative
PowerDNS Recursor

How to mitigate CVE-2015-5470

Install update from vendor's website.

PowerDNS Authoritative - addressed in versions 3.3.3, 3.4.5
PowerDNS Recursor - addressed in versions 3.4.5, 3.7.3

External References

Related Security Bulletins