Description (CNA)
An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 3.7.4 and 4.0.4, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the PowerDNS server by sending crafted DNS queries, which might result in a partial denial of service if the system becomes overloaded. This issue is based on the fact that the PowerDNS server parses all records present in a query regardless of whether they are needed or even legitimate. A specially crafted query containing a large number of records can be used to take advantage of that behaviour.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Open-Xchange / pdns | affected 3.4.11; affected 4.0.2; affected 3.7.4; affected 4.0.4 |
CWE
CWE-20
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7068
- https://www.debian.org/security/2017/dsa-3764
- https://www.debian.org/security/2017/dsa-3763
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/
ADP enrichment
No English description supplied.