Vulnerability identifier: #VU15960

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-10851

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PowerDNS Recursor
Server applications / DNS servers
PowerDNS Authoritative
Server applications / DNS servers

Vendor: PowerDNS.COM B.V.

Description

The vulnerability allows a remote authenticated attacker to cause DoS condition on the target system.

The vulnerability exists due to memory leak when handling malicious input. A remote attacker can insert a specially crafted record in a zone under his control, send a DNS query for that record, trigger memory leak and cause the service to crash.

Mitigation
The vulnerability has been fixed in the versions 4.1.5.

Vulnerable software versions

PowerDNS Recursor: 4.1.0 - 4.1.4, 4.0.0 - 4.0.9

PowerDNS Authoritative: 4.1.0 - 4.1.4, 4.0.0 - 4.0.9

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External links
http://bugzilla.redhat.com/show_bug.cgi?id=1649032

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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.