CVE-2021-29485

{"id": "CVE-2021-29485", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.9, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.1}]}, "published": "2021-06-29T19:15:09.607", "references": [{"url": "https://github.com/ratpack/ratpack/security/advisories/GHSA-hc33-32vw-rpp9", "tags": ["Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://mvnrepository.com/artifact/io.ratpack/ratpack-core", "tags": ["Release Notes", "Third Party Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-502"}]}, {"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-502"}]}], "descriptions": [{"lang": "en", "value": "Ratpack is a toolkit for creating web applications. In versions prior to 1.9.0, a malicious attacker can achieve Remote Code Execution (RCE) via a maliciously crafted Java deserialization gadget chain leveraged against the Ratpack session store. If one's application does not use Ratpack's session mechanism, it is not vulnerable. Ratpack 1.9.0 introduces a strict allow-list mechanism that mitigates this vulnerability when used. Two possible workarounds exist. The simplest mitigation for users of earlier versions is to reduce the likelihood of attackers being able to write to the session data store. Alternatively or additionally, the allow-list mechanism could be manually back ported by providing an alternative implementation of `SessionSerializer` that uses an allow-list."}, {"lang": "es", "value": "Ratpack es un kit de herramientas para crear aplicaciones web. En las versiones anteriores a 1.9.0, un atacante malicioso puede lograr una Ejecuci\u00f3n de C\u00f3digo Remota (RCE) por medio de una cadena de gadgets de deserializaci\u00f3n de Java maliciosamente dise\u00f1ada y aprovechada contra el almac\u00e9n de sesiones de Ratpack. Si una aplicaci\u00f3n no usa el mecanismo de sesi\u00f3n de Ratpack, no es vulnerable. Ratpack versi\u00f3n 1.9.0 introduce un mecanismo de lista de permisos estrictos que mitiga esta vulnerabilidad cuando se usa. Se presentan dos posibles soluciones. La mitigaci\u00f3n m\u00e1s sencilla para los usuarios de versiones anteriores es reducir la probabilidad de que los atacantes puedan escribir en el almac\u00e9n de datos de la sesi\u00f3n. Alternativa o adicionalmente, el mecanismo de lista permitida podr\u00eda ser portado manualmente al proveer una implementaci\u00f3n alternativa de \"SessionSerializer\" que use una lista permitida"}], "lastModified": "2021-07-08T15:26:03.150", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ratpack_project:ratpack:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E972830A-9822-4DD9-BB64-9CC2B69018D5", "versionEndExcluding": "1.9.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}