Rapid7 Vulnerability & Exploit Database

Gentoo Linux: CVE-2020-25829: PowerDNS Recursor: Denial of service

Back to Search

Gentoo Linux: CVE-2020-25829: PowerDNS Recursor: Denial of service

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
10/16/2020
Created
12/30/2020
Added
12/29/2020
Modified
12/29/2020

Description

An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. 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 installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).

Solution(s)

  • gentoo-linux-upgrade-net-dns-pdns-recursor

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;