CVE-2021-26073

{"id": "CVE-2021-26073", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 3.1}]}, "published": "2021-04-16T03:15:12.033", "references": [{"url": "https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-a%5B%E2%80%A6%5Dypass-of-app-qsh-verification-via-context-jwts/47072", "source": "security@atlassian.com"}, {"url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986099", "tags": ["Vendor Advisory"], "source": "security@atlassian.com"}, {"url": "https://security.netapp.com/advisory/ntap-20210604-0004/", "tags": ["Third Party Advisory"], "source": "security@atlassian.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-287"}]}], "descriptions": [{"lang": "en", "value": "Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian Connect Express is a Node.js package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Express app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Express versions from 3.0.2 before 6.6.0 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app."}, {"lang": "es", "value": "Autenticaci\u00f3n rota en Atlassian Connect Express (ACE) desde la versi\u00f3n 3.0.2 versiones anteriores a 6.6.0: Atlassian Connect Express es un paquete Node.js para construir aplicaciones de Atlassian Connect. La autenticaci\u00f3n entre los productos de Atlassian y la aplicaci\u00f3n Atlassian Connect Express se produce con un JWT de servidor a servidor o un JWT de contexto. Las versiones de Atlassian Connect Express desde la 3.0.2 versiones anteriores a 6.6.0 aceptan err\u00f3neamente JWTs de contexto en los puntos finales del ciclo de vida (como la instalaci\u00f3n) cuando solo deber\u00edan aceptarse JWTs de servidor a servidor, lo que permite a un atacante enviar eventos de reinstalaci\u00f3n autenticados a una aplicaci\u00f3n"}], "lastModified": "2023-11-07T03:31:39.787", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:atlassian:connect_express:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "AB2C8D0B-0934-4D8E-86D9-BCEB48094866", "versionEndExcluding": "6.6.0", "versionStartIncluding": "3.0.2"}], "operator": "OR"}]}], "sourceIdentifier": "security@atlassian.com"}