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Test ID:1.3.6.1.4.1.25623.1.0.144824
Category:Denial of Service
Title:PowerDNS Recursor < 4.1.18, 4.2.0 < 4.2.4, 4.3.0 < 4.3.4 DoS Vulnerability
Summary:PowerDNS Recursor is prone to a denial of service vulnerability.
Description:Summary:
PowerDNS Recursor is prone to a denial of service vulnerability.

Vulnerability Insight:
An issue has been found in PowerDNS Recursor where a remote attacker can cause
the cached records for a given name to be updated to the 'Bogus' DNSSEC validation state, instead of their
actual DNSSEC 'Secure' state, via a DNS ANY query. This results in a denial of service for installations that
always validate (dnssec=validate) and for clients requesting validation when on-demand validation is enabled
(dnssec=process).

Affected Software/OS:
PowerDNS Recursor version 4.1.17 and prior, 4.2.0 - 4.2.4 and 4.3.0 - 4.3.4.

Solution:
Update to version 4.1.18, 4.2.5, 4.3.5 or later.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-25829
CopyrightCopyright (C) 2020 Greenbone Networks GmbH

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