Input validation error in PowerDNS Recursor and PowerDNS Authoritative - 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/E:U/U:Green
CVE-ID: CVE-2015-5470
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PowerDNS.COM B.V.
Affected software:
PowerDNS Recursor
PowerDNS Authoritative
PowerDNS Recursor
PowerDNS Authoritative
Detailed vulnerability description
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.
How to mitigate CVE-2015-5470
Install update from vendor's website.