CVE-2022-40188
HIGHKnot Resolver < 5.5.3 - Denial of Service via Algorithmic Complexity
Title source: llmDescription
Knot Resolver before 5.5.3 allows remote attackers to cause a denial of service (CPU consumption) because of algorithmic complexity. During an attack, an authoritative server must return large NS sets or address sets.
References (5)
Core 5
Core References
Release Notes, Third Party Advisory
https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1343#note_262558
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2VE5K3VDUHJOIA2IGT3G5R76IBADMNE/
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HIMDNIUI7GTUEKIBBYYW7OCTJQFPDNXL/
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XO6LIVQS62MI5GG4OVYB5RHVZMYNHAHG/
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2022/10/msg00008.html
Scores
CVSS v3
7.5
EPSS
0.0145
EPSS Percentile
69.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-407
Status
published
Products (5)
debian/debian_linux
10.0
fedoraproject/fedora
35
fedoraproject/fedora
36
fedoraproject/fedora
37
nic/knot_resolver
< 5.5.3
Published
Sep 23, 2022
Tracked Since
Feb 18, 2026