cve-2020-8561
Vulnerability from cvelistv5
Published
2021-09-20 17:05
Modified
2024-09-16 22:29
Severity ?
EPSS score ?
Summary
Webhook redirect in kube-apiserver
References
▼ | URL | Tags | |
---|---|---|---|
jordan@liggitt.net | https://github.com/kubernetes/kubernetes/issues/104720 | Mitigation, Third Party Advisory | |
jordan@liggitt.net | https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY | Mailing List, Mitigation | |
jordan@liggitt.net | https://security.netapp.com/advisory/ntap-20211014-0002/ | Third Party Advisory |
Impacted products
▼ | Vendor | Product |
---|---|---|
Kubernetes | Kubernetes |
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If that user can view kube-apiserver logs when the log level is set to 10, they can view the redirected responses and headers in the logs." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-441", "description": "CWE-441 Unintended Proxy or Intermediary", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2021-10-14T08:06:21", "orgId": "a6081bf6-c852-4425-ad4f-a67919267565", "shortName": "kubernetes" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/kubernetes/kubernetes/issues/104720" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://security.netapp.com/advisory/ntap-20211014-0002/" } ], "source": { "defect": [ "https://github.com/kubernetes/kubernetes/issues/104720" ], "discovery": "EXTERNAL" }, "title": "Webhook redirect in kube-apiserver", "x_generator": { "engine": "Vulnogram 0.0.9" }, "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@kubernetes.io", "DATE_PUBLIC": "2021-09-15T21:15:00.000Z", "ID": "CVE-2020-8561", "STATE": "PUBLIC", "TITLE": "Webhook redirect in kube-apiserver" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Kubernetes", "version": { "version_data": [ { "version_affected": "\u003c=", "version_value": "1.20.11" }, { "version_affected": "\u003e?", "version_value": "1.20.11" }, { "version_affected": "\u003c=", "version_value": "1.21.5" }, { "version_affected": "\u003e?", "version_value": "1.21.5" }, { "version_affected": "\u003c=", "version_value": "1.22.2" }, { "version_affected": "\u003e?", "version_value": "1.22.2" } ] } } ] }, "vendor_name": "Kubernetes" } ] } }, "credit": [ { "lang": "eng", "value": "QiQi Xu" } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the log level is set to 10, they can view the redirected responses and headers in the logs." } ] }, "generator": { "engine": "Vulnogram 0.0.9" }, "impact": { "cvss": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.1, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-441 Unintended Proxy or Intermediary" } ] } ] }, "references": { "reference_data": [ { "name": "https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY", "refsource": "MISC", "url": "https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY" }, { "name": "https://github.com/kubernetes/kubernetes/issues/104720", "refsource": "MISC", "url": "https://github.com/kubernetes/kubernetes/issues/104720" }, { "name": "https://security.netapp.com/advisory/ntap-20211014-0002/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20211014-0002/" } ] }, "source": { "defect": [ "https://github.com/kubernetes/kubernetes/issues/104720" ], "discovery": "EXTERNAL" } } } }, "cveMetadata": { "assignerOrgId": "a6081bf6-c852-4425-ad4f-a67919267565", "assignerShortName": "kubernetes", "cveId": "CVE-2020-8561", "datePublished": "2021-09-20T17:05:16.328714Z", "dateReserved": "2020-02-03T00:00:00", "dateUpdated": "2024-09-16T22:29:49.855Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2020-8561\",\"sourceIdentifier\":\"jordan@liggitt.net\",\"published\":\"2021-09-20T17:15:08.187\",\"lastModified\":\"2021-11-06T03:04:43.630\",\"vulnStatus\":\"Analyzed\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the log level is set to 10, they can view the redirected responses and headers in the logs.\"},{\"lang\":\"es\",\"value\":\"Se ha detectado un problema de seguridad en Kubernetes donde los actores que controlan las respuestas de las peticiones MutatingWebhookConfiguration o ValidatingWebhookConfiguration son capaces de redirigir las peticiones de kube-apiserver a redes privadas del apiserver. Si ese usuario puede visualizar los registros de kube-apiserver cuando el nivel de registro se establece en 10, puede visualizar las respuestas redirigidas y los encabezados en los registros\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\",\"baseScore\":4.1,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":2.3,\"impactScore\":1.4},{\"source\":\"jordan@liggitt.net\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\",\"baseScore\":4.1,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":2.3,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:S/C:P/I:N/A:N\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\",\"baseScore\":4.0},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-610\"}]},{\"source\":\"jordan@liggitt.net\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-441\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:1.20.11:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"1E602175-D34A-44F2-88CD-C0D2C5D240EB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:1.21.5:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"0CBB908A-7235-4F5A-AD59-9E11B77A4CA3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:kubernetes:kubernetes:1.22.2:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"8A1DF02D-B561-445F-8262-3A9F6762CBC3\"}]}]}],\"references\":[{\"url\":\"https://github.com/kubernetes/kubernetes/issues/104720\",\"source\":\"jordan@liggitt.net\",\"tags\":[\"Mitigation\",\"Third Party Advisory\"]},{\"url\":\"https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY\",\"source\":\"jordan@liggitt.net\",\"tags\":[\"Mailing List\",\"Mitigation\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20211014-0002/\",\"source\":\"jordan@liggitt.net\",\"tags\":[\"Third Party Advisory\"]}]}}" } }
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Sightings
Author | Source | Type | Date |
---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.