CVE-2020-10995
- State
- Published
- Severity
- Not scored
- Published
- May 19, 2020
- Updated
- Aug 4, 2024
- Reserved
- Mar 27, 2020
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- http://www.nxnsattack.com/
- https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-01.html
- DSA-4691vendor-advisory
- openSUSE-SU-2020:0698vendor-advisory
- FEDORA-2020-d9abb0c06dvendor-advisory
- FEDORA-2020-c0ff3df740vendor-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.