Vulnerability identifier: #VU9438

Vulnerability risk: Low

CVSSv3.1: 3.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-15091

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PowerDNS Authoritative
Server applications / DNS servers

Vendor: PowerDNS.COM B.V.

Description
The vulnerability allows a remote attacker to modify arbitrary data on the target system.

The weakness exists due to insufficient validation of the API component of PowerDNS Authoritative. A remote attacker with valid API credentials can configure the API as read-only via the api-readonly keyword, flush the cache, trigger a zone transfer or send a NOTIFY.

Mitigation
Update PowerDNS Authoritative to version 4.0.5.

Vulnerable software versions

PowerDNS Authoritative: 4.0.0 - 4.0.4, 3.4.11

---

External links
http://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2017-04.html

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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