CVE-2021-41803 - Vulnerability Details - OpenCVE

HashiCorp Consul 1.8.1 up to 1.11.8, 1.12.4, and 1.13.1 do not properly validate the node or segment names prior to interpolation and usage in JWT claim assertions with the auto config RPC. Fixed in 1.11.9, 1.12.5, and 1.13.2."

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Hashicorp	Consul

Configuration 1 [-]

OR	cpe:2.3:a:hashicorp:consul:::::-:::*
	cpe:2.3:a:hashicorp:consul:::::enterprise:::*
	cpe:2.3:a:hashicorp:consul:1.12.4::::-:::
	cpe:2.3:a:hashicorp:consul:1.12.4::::enterprise:::
	cpe:2.3:a:hashicorp:consul:1.13.1::::-:::
	cpe:2.3:a:hashicorp:consul:1.13.1::::enterprise:::

No data.

References

Link	Providers
https://discuss.hashicorp.com/t/hcsec-2022-19-consul-auto-config-jwt-authorization-missing-input-validation/44627
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYZOKMMVX4SIEHPJW3SJUQGMO5YZCPHC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XNF4OLYZRQE75EB5TW5N42FSXHBXGWFE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZTE4ITXXPIWZEQ4HYQCB6N6GZIMWXDAI/
https://nvd.nist.gov/vuln/detail/CVE-2021-41803
https://www.cve.org/CVERecord?id=CVE-2021-41803
https://www.hashicorp.com/blog/category/consul

History

Tue, 27 May 2025 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-09-23T00:00:00.000Z

Updated: 2025-05-27T15:22:09.400Z

Reserved: 2021-09-29T00:00:00.000Z

Link: CVE-2021-41803

Vulnrichment

Updated: 2024-08-04T03:22:24.351Z

NVD

Status : Modified

Published: 2022-09-23T01:15:08.623

Modified: 2025-05-27T16:15:21.943

Link: CVE-2021-41803

Redhat

Severity : Moderate

Publid Date: 2022-09-23T00:00:00Z

Links: CVE-2021-41803 - Bugzilla

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*", "matchCriteriaId": "5383A26F-D49C-435F-A81D-15A1A7A74215", "versionEndExcluding": "1.11.9", "versionStartIncluding": "1.8.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "E72F2F36-94E2-40D8-AC42-805F3EB54922", "versionEndExcluding": "1.11.9", "versionStartIncluding": "1.8.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:hashicorp:consul:1.12.4:*:*:*:-:*:*:*", "matchCriteriaId": "4A8E6F38-D34C-4EAE-98C6-6C65ACF35BEA", "vulnerable": true}, {"criteria": "cpe:2.3:a:hashicorp:consul:1.12.4:*:*:*:enterprise:*:*:*", "matchCriteriaId": "6A7455E7-398A-42A5-946A-2497B88394F2", "vulnerable": true}, {"criteria": "cpe:2.3:a:hashicorp:consul:1.13.1:*:*:*:-:*:*:*", "matchCriteriaId": "80BC2226-63EB-41E2-BEB4-4B3A84393E48", "vulnerable": true}, {"criteria": "cpe:2.3:a:hashicorp:consul:1.13.1:*:*:*:enterprise:*:*:*", "matchCriteriaId": "5A31B819-4F49-42A3-9685-CE34440A4850", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "HashiCorp Consul 1.8.1 up to 1.11.8, 1.12.4, and 1.13.1 do not properly validate the node or segment names prior to interpolation and usage in JWT claim assertions with the auto config RPC. Fixed in 1.11.9, 1.12.5, and 1.13.2.\""}, {"lang": "es", "value": "HashiCorp Consul versiones 1.8.1 hasta 1.11.8, 1.12.4 y 1.13.1, no comprueban apropiadamente los nombres de nodos o segmentos antes de la interpolaci\u00f3n y el uso en las aserciones de reclamaci\u00f3n JWT con el RPC de configuraci\u00f3n autom\u00e1tica. Corregido en versiones 1.11.9, 1.12.5 y 1.13.2\"."}], "id": "CVE-2021-41803", "lastModified": "2025-05-27T16:15:21.943", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2022-09-23T01:15:08.623", "references": [{"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://discuss.hashicorp.com/t/hcsec-2022-19-consul-auto-config-jwt-authorization-missing-input-validation/44627"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYZOKMMVX4SIEHPJW3SJUQGMO5YZCPHC/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XNF4OLYZRQE75EB5TW5N42FSXHBXGWFE/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZTE4ITXXPIWZEQ4HYQCB6N6GZIMWXDAI/"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://www.hashicorp.com/blog/category/consul"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://discuss.hashicorp.com/t/hcsec-2022-19-consul-auto-config-jwt-authorization-missing-input-validation/44627"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYZOKMMVX4SIEHPJW3SJUQGMO5YZCPHC/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XNF4OLYZRQE75EB5TW5N42FSXHBXGWFE/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZTE4ITXXPIWZEQ4HYQCB6N6GZIMWXDAI/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.hashicorp.com/blog/category/consul"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-862"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "consul: Consul Auto-Config JWT Authorization Missing Input Validation", "id": "2189788", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2189788"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H", "status": "draft"}, "cwe": "CWE-862", "details": ["HashiCorp Consul 1.8.1 up to 1.11.8, 1.12.4, and 1.13.1 do not properly validate the node or segment names prior to interpolation and usage in JWT claim assertions with the auto config RPC. Fixed in 1.11.9, 1.12.5, and 1.13.2.\"", "A flaw was found in HashiCorp Consul, where it is vulnerable to a denial of service caused by improper input validation for the node or segment names. By sending a specially-crafted request, a remote, authenticated attacker can cause a denial of service."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2021-41803", "package_state": [{"cpe": "cpe:/a:redhat:logging:5", "fix_state": "Not affected", "package_name": "openshift-logging/logging-loki-rhel8", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Not affected", "package_name": "rhacm2/acm-grafana-rhel8", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Will not fix", "package_name": "openshift4/ose-grafana", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Will not fix", "package_name": "openshift4/topology-aware-lifecycle-manager-rhel8-operator", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Will not fix", "package_name": "odf4/odf-multicluster-rhel9-operator", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_data_foundation:4", "fix_state": "Affected", "package_name": "odf4/odr-rhel8-operator", "product_name": "Red Hat Openshift Data Foundation 4"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3:", "fix_state": "Affected", "package_name": "devspaces/traefik-rhel8", "product_name": "Red Hat OpenShift Dev Spaces"}], "public_date": "2022-09-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-41803\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-41803\nhttps://discuss.hashicorp.com/t/hcsec-2022-19-consul-auto-config-jwt-authorization-missing-input-validation/44627"], "threat_severity": "Moderate"}