National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2020-10995 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html
http://www.nxnsattack.com Technical Description
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-01.html Vendor Advisory
https://www.debian.org/security/2020/dsa-4691

Weakness Enumeration

CWE-ID CWE Name Source
CWE-674 Uncontrolled Recursion NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.1.0
Up to (including)
4.3.0


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-10995
NVD Published Date:
05/19/2020
NVD Last Modified:
05/26/2020