PowerDNS Recursor 3.1.3 and earlier allows remote attackers to cause a denial of service (resource exhaustion and application crash) via a CNAME record with a zero TTL, which triggers an infinite loop.
http://doc.powerdns.com/powerdns-advisory-2006-02.html
http://lists.suse.com/archive/suse-security-announce/2006-Nov/0007.html
http://secunia.com/advisories/22824
http://secunia.com/advisories/22976
http://www.securityfocus.com/bid/21037
Source: MITRE
Published: 2006-11-14
Updated: 2017-07-20
Type: NVD-CWE-Other
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM