PT-2023-20562 · Unknown+2 · Knot Resolver+2

Qifan Zhang + 2 · Publicado 2023-02-21 · Atualizado 2025-03-14 · CVE-2023-26249

Positive Technologies (AI Summary)

CVSS v3.1

7.5

Alta

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Knot Resolver versions prior to 5.6.0

Description The issue enables attackers to consume the resolver's resources, launching amplification attacks and potentially causing a denial of service. A single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response.

Recommendations For versions prior to 5.6.0, update to version 5.6.0 or later to resolve the issue.

Correção

DoS

Allocation of Resources Without Limits

Enumeração de Fraquezas

CWE-770

Identificadores relacionados

ALT-PU-2023-1509

ALT-PU-2024-2060

CVE-2023-26249

Produtos afetados

Alt Linux

Debian

Knot Resolver

Referências · 22

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-26249 · Nota de Segurança
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32983 · Nota de Segurança
• https://security-tracker.debian.org/tracker/CVE-2023-26249 · Aviso do Fabricante
• https://ubuntu.com/security/CVE-2023-26249 · Aviso do Fabricante
• https://t.me/cvenotify/114848 · Publicação no Telegram
• https://packages.debian.org/src:knot-resolver · Nota
• https://t.me/cvenotify/45403 · Publicação no Telegram
• https://packages.altlinux.org/ru/vuln/CVE-2023-26249 · Nota
• https://errata.altlinux.org/ALT-PU-2024-2060 · Aviso do Fabricante
• https://cve.org/CVERecord?id=CVE-2023-26249 · Nota de Segurança
• https://osv.dev/vulnerability/CVE-2023-26249 · Aviso do Fabricante
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-26249 · Aviso do Fabricante
• https://knot-resolver.cz/2023-01-26-knot-resolver-5.6.0.html · Aviso do Fabricante
• https://bdu.fstec.ru/vul/2024-04315 · Nota de Segurança
• https://t.me/cvenotify/44702 · Publicação no Telegram