CVE-2020-12667

Katalog CVE

CVSS 7.5 · High EPSS 2,6%

Kerentanan Uncontrolled Resource Consumption pada nic knot resolver. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

Knot Resolver before 5.1.1 allows traffic amplification via a crafted DNS answer from an attacker-controlled server, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records.

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)

2,6% peluang dieksploitasi; lebih tinggi dari 85,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://en.blog.nic.cz/2020/05/19/nxnsattack-upgrade-resolvers-to-stop-new-kind-of-random-subdomain-attack/ deskripsi teknis · advisory vendor
• https://www.knot-resolver.cz/2020-05-19-knot-resolver-5.1.1.html release notes · advisory vendor
• http://cyber-security-group.cs.tau.ac.il/# deskripsi teknis · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2020/05/19/2 mailing list · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/76Y4FITMOH6RV...