UBUNTU-CVE-2016-7068

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UBUNTU-CVE-2016-7068

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2016-7068, https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/, https://www.cve.org/CVERecord?id=CVE-2016-7068