Vulnerability identifier: #VU33441

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-10163

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to perform service disruption.

A Vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.9, 4.0.8 allowing a remote, authorized master server to cause a high CPU load or even prevent any further updates to any slave zone by sending a large number of NOTIFY messages. Note that only servers configured as slaves are affected by this issue.

Mitigation
Install update from vendor's website.

External links
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00036.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00054.html
http://blog.powerdns.com/2019/06/21/powerdns-authoritative-server-4-0-8-and-4-1-10-released/
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10163
http://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-05.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.