{"containers": {"cna": {"affected": [{"product": "nacos", "vendor": "alibaba", "versions": [{"status": "affected", "version": "< 1.4.1"}]}], "descriptions": [{"lang": "en", "value": "Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, when configured to use authentication (-Dnacos.core.auth.enabled=true) Nacos uses the AuthFilter servlet filter to enforce authentication. This filter has a backdoor that enables Nacos servers to bypass this filter and therefore skip authentication checks. This mechanism relies on the user-agent HTTP header so it can be easily spoofed. This issue may allow any user to carry out any administrative tasks on the Nacos server."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-290", "description": "CWE-290 Authentication Bypass by Spoofing", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-04-27T20:20:20", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://github.com/alibaba/nacos/issues/4701"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/advisories/GHSA-36hp-jr8h-556f"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/alibaba/nacos/pull/4703"}], "source": {"advisory": "GHSA-36hp-jr8h-556f", "discovery": "UNKNOWN"}, "title": "Authentication bypass", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-29441", "STATE": "PUBLIC", "TITLE": "Authentication bypass"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "nacos", "version": {"version_data": [{"version_value": "< 1.4.1"}]}}]}, "vendor_name": "alibaba"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, when configured to use authentication (-Dnacos.core.auth.enabled=true) Nacos uses the AuthFilter servlet filter to enforce authentication. This filter has a backdoor that enables Nacos servers to bypass this filter and therefore skip authentication checks. This mechanism relies on the user-agent HTTP header so it can be easily spoofed. This issue may allow any user to carry out any administrative tasks on the Nacos server."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-290 Authentication Bypass by Spoofing"}]}]}, "references": {"reference_data": [{"name": "https://github.com/alibaba/nacos/issues/4701", "refsource": "MISC", "url": "https://github.com/alibaba/nacos/issues/4701"}, {"name": "https://github.com/advisories/GHSA-36hp-jr8h-556f", "refsource": "CONFIRM", "url": "https://github.com/advisories/GHSA-36hp-jr8h-556f"}, {"name": "https://github.com/alibaba/nacos/pull/4703", "refsource": "MISC", "url": "https://github.com/alibaba/nacos/pull/4703"}]}, "source": {"advisory": "GHSA-36hp-jr8h-556f", "discovery": "UNKNOWN"}}}}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-29441", "datePublished": "2021-04-27T20:20:20", "dateReserved": "2021-03-30T00:00:00", "dateUpdated": "2021-04-27T20:20:20", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:alibaba:nacos:*:*:*:*:*:*:*:*", "matchCriteriaId": "167EF403-0A27-4951-83BF-0BE274BBA6B7", "versionEndExcluding": "1.4.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, when configured to use authentication (-Dnacos.core.auth.enabled=true) Nacos uses the AuthFilter servlet filter to enforce authentication. This filter has a backdoor that enables Nacos servers to bypass this filter and therefore skip authentication checks. This mechanism relies on the user-agent HTTP header so it can be easily spoofed. This issue may allow any user to carry out any administrative tasks on the Nacos server."}, {"lang": "es", "value": "Nacos es una plataforma dise\u00f1ada para el descubrimiento y la configuraci\u00f3n din\u00e1mica de servicios y la gesti\u00f3n de servicios.&#xa0;En Nacos versiones anteriores a 1.4.1, cuando se configura para usar autenticaci\u00f3n (-Dnacos.core.auth.enabled=true), Nacos usa el filtro de servlet AuthFilter para hacer cumplir la autenticaci\u00f3n.&#xa0;Este filtro presenta una backdoor que permite a servidores de Nacos omitir este filtro y, por lo tanto, omitir las comprobaciones de autenticaci\u00f3n.&#xa0;Este mecanismo es basado en el encabezado HTTP del agente de usuario para que pueda falsificarse f\u00e1cilmente.&#xa0;Este problema puede permitir a cualquier usuario llevar a cabo cualquier tarea administrativa en el servidor de Nacos"}], "id": "CVE-2021-29441", "lastModified": "2021-05-07T23:09:11.463", "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": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2021-04-27T21:15:07.993", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/advisories/GHSA-36hp-jr8h-556f"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/alibaba/nacos/issues/4701"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/alibaba/nacos/pull/4703"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-290"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}