PT-2022-25268 · Unknown+4 · Knot Resolver+4

Published 2022-09-23 · Updated 2024-02-14 · CVE-2022-40188

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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 5.5.3

Description The issue allows remote attackers to cause a denial of service due to algorithmic complexity, resulting in CPU consumption. This occurs when an authoritative server returns large NS sets or address sets during an attack.

Recommendations For versions prior to 5.5.3, update to version 5.5.3 or later to resolve the issue.

Fix

DoS

Weakness Enumeration

CWE-407

Related Identifiers

ALT-PU-2022-2696

ALT-PU-2024-2060

CVE-2022-40188

DLA-3139-1

USN-6225-1

Affected Products

Alt Linux

Debian

Knot Resolver

Linuxmint

Ubuntu

References · 18

• https://ubuntu.com/security/CVE-2022-40188 · Vendor Advisory
• https://osv.dev/vulnerability/USN-6225-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-6225-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XO6LIVQS62MI5GG4OVYB5RHVZMYNHAHG · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-40188 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-40188 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3139-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-40188 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-40188 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIMDNIUI7GTUEKIBBYYW7OCTJQFPDNXL · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2VE5K3VDUHJOIA2IGT3G5R76IBADMNE · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-40188 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-40188 · Security Note
• https://github.com/CZ-NIC/knot-resolver/commit/f6577a20e493c7fbdac124d7544bf1846b084185 · Note
• https://t.me/cibsecurity/50356 · Telegram Post