CVE-2020-1764

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{"affected": [{"affectedData": [{"product": "kiali", "vendor": "Red Hat", "versions": [{"status": "affected", "version": "all Kiali versions prior to 1.15.1"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:kiali:kiali:*:*:*:*:*:*:*:*", "matchCriteriaId": "73730DE8-613B-4050-8DDF-8240F7A2D0B8", "versionEndExcluding": "1.15.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:redhat:openshift_service_mesh:1.0:*:*:*:*:*:*:*", "matchCriteriaId": "732F14CE-7994-4DD2-A28B-AE9E79826C01", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A hard-coded cryptographic key vulnerability in the default configuration file was found in Kiali, all versions prior to 1.15.1. A remote attacker could abuse this flaw by creating their own JWT signed tokens and bypass Kiali authentication mechanisms, possibly gaining privileges to view and alter the Istio configuration."}, {"lang": "es", "value": "Se detect\u00f3 una vulnerabilidad de clave criptogr\u00e1fica embebida en el archivo de configuraci\u00f3n predeterminado en Kiali, todas las versiones anteriores a 1.15.1. Un atacante remoto podr\u00eda abusar de este fallo mediante la creaci\u00f3n de sus propios tokens firmados JWT y omisi\u00f3n de los mecanismos de autenticaci\u00f3n de Kiali, posiblemente obteniendo privilegios para visualizar y alterar la configuraci\u00f3n de Istio."}], "id": "CVE-2020-1764", "lastModified": "2026-06-17T03:02:21.380", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.7, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-03-26T13:15:13.203", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Mitigation", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1764"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://kiali.io/news/security-bulletins/kiali-security-001/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Mitigation", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1764"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://kiali.io/news/security-bulletins/kiali-security-001/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-321"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-798"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Dagan Henderson (Akoya, LLC) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2020:0975", "cpe": "cpe:/a:redhat:service_mesh:1.0::el7", "impact": "moderate", "package": "openshift-service-mesh/kiali-rhel7-operator:1.0.12-2", "product_name": "Openshift Service Mesh 1.0", "release_date": "2020-03-25T00:00:00Z"}], "bugzilla": {"description": "kiali: JWT cookie uses default signing key", "id": "1810383", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1810383"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "status": "verified"}, "cwe": "CWE-321", "details": ["A hard-coded cryptographic key vulnerability in the default configuration file was found in Kiali, all versions prior to 1.15.1. A remote attacker could abuse this flaw by creating their own JWT signed tokens and bypass Kiali authentication mechanisms, possibly gaining privileges to view and alter the Istio configuration.", "A hard-coded cryptographic key vulnerability in the default configuration file was found in Kiali. A remote attacker could abuse this flaw by creating their own JWT signed tokens and bypass Kiali authentication mechanisms, possibly gaining privileges to view and alter the Istio configuration."], "mitigation": {"lang": "en:us", "value": "The Kiali configuration can be manually updated for ServiceMesh so that the default signing_key cannot be easily determined:\noc get kiali -n $(oc get kiali --all-namespaces --no-headers -o custom-columns=NS:.metadata.namespace) -o yaml | sed \"s/spec:/spec:\\n login_token:\\n signing_key: $(chars=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890; for i in {1..20}; do echo -n \"${chars:RANDOM%${#chars}:1}\"; done; echo)/\" | oc apply -f -"}, "name": "CVE-2020-1764", "public_date": "2020-03-25T18:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-1764\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-1764\nhttps://kiali.io/news/security-bulletins/kiali-security-001/"], "statement": "If exploited, an attacker can perform all Kiali admin functions via the API including:\n- View the logs of a pod\n- View Istio metrics, tracing etc.\n- Alter Istio routing configurations:\n- Change the pod availability: adding variances to the weighting, i.e. all traffic goes to 1 pod, or 95% of all traffic. \n- Prevent traffic reaching a pod, DoS\nWhilst OpenShift ServiceMesh Kiali uses the default signing key for JWT cookies, it also includes an access_token. This token is generated with a successful login and cannot be easily determined. \nTo access the Kiali API in this case, a valid session token would need to be captured first and then added to the JWT cookie.", "threat_severity": "Important"}

{}