CVE-2022-40188

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.

CVSS v3.0 7.5 HIGH

7.5^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1343#note_262558	Release Notes Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S2VE5K3VDUHJOIA2IGT3G5R76IBADMNE/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HIMDNIUI7GTUEKIBBYYW7OCTJQFPDNXL/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XO6LIVQS62MI5GG4OVYB5RHVZMYNHAHG/
https://lists.debian.org/debian-lts-announce/2022/10/msg00008.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

Information

Published : 2022-09-23 09:15

Updated : 2022-10-07 20:15

NVD link : CVE-2022-40188

Mitre link : CVE-2022-40188

JSON object : View

CWE

CWE-400

Uncontrolled Resource Consumption

Products Affected

nic

knot_resolver

fedoraproject

fedora

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1343#note_262558", "name": "https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1343#note_262558", "tags": ["Release Notes", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S2VE5K3VDUHJOIA2IGT3G5R76IBADMNE/", "name": "FEDORA-2022-68ad89b21c", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "FEDORA"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HIMDNIUI7GTUEKIBBYYW7OCTJQFPDNXL/", "name": "FEDORA-2022-357cc1a81b", "tags": [], "refsource": "FEDORA"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XO6LIVQS62MI5GG4OVYB5RHVZMYNHAHG/", "name": "FEDORA-2022-2a4ca7b18d", "tags": [], "refsource": "FEDORA"}, {"url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00008.html", "name": "[debian-lts-announce] 20221008 [SECURITY] [DLA 3139-1] knot-resolver security update", "tags": [], "refsource": "MLIST"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-400"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2022-40188", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}}, "publishedDate": "2022-09-23T16:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "5.5.3"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-10-08T03:15Z"}

7.5 /10