CVE-2020-10995

Katalog CVE

CVSS 7.5 · High EPSS 4,5%

Kerentanan Uncontrolled Resource Consumption pada powerdns recursor, fedoraproject fedora +3 lainnya. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

19 Mei 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-400: Uncontrolled Resource Consumption

EPSS (30 hari)

4,5% peluang dieksploitasi; lebih tinggi dari 91,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-01.html advisory vendor
• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html mailing list · advisory pihak ketiga
• http://www.nxnsattack.com deskripsi teknis · advisory pihak ketiga
• https://www.debian.org/security/2020/dsa-4691 advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNF...