CVE-2020-10995

PowerDNS Recursor from 4.1.0 up to and including 4.3.0 does not sufficiently defend against amplification attacks. An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted reply by an authoritative name server to amplify the resulting traffic between the recursive and other authoritative name servers. Both types of service can suffer degraded performance as an effect. This is triggered by random subdomains in the NSDNAME in NS records. PowerDNS Recursor 4.1.16, 4.2.2 and 4.3.1 contain a mitigation to limit the impact of this DNS protocol issue.

Link	Resource
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-01.html	Vendor Advisory
http://www.nxnsattack.com	Technical Description Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html	Mailing List Third Party Advisory
https://www.debian.org/security/2020/dsa-4691	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/	Mailing List Third Party Advisory

Configuration 1

cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*

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Published : 2020-05-19 05:15

Updated : 2022-04-26 07:25

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NVD link : CVE-2020-10995

Mitre link : CVE-2020-10995

No products.

CWE-400