Show plain JSON{"id": "CVE-2020-15237", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.2}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.2}]}, "published": "2020-10-05T19:15:15.103", "references": [{"url": "https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0", "tags": ["Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp", "tags": ["Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0", "tags": ["Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-203"}, {"lang": "en", "value": "CWE-208"}]}], "descriptions": [{"lang": "en", "value": "In Shrine before version 3.3.0, when using the `derivation_endpoint` plugin, it's possible for the attacker to use a timing attack to guess the signature of the derivation URL. The problem has been fixed by comparing sent and calculated signature in constant time, using `Rack::Utils.secure_compare`. Users using the `derivation_endpoint` plugin are urged to upgrade to Shrine 3.3.0 or greater. A possible workaround is provided in the linked advisory."}, {"lang": "es", "value": "En Shrine versiones anteriores a 3.3.0, cuando se usa el plugin \"derivation_endpoint\", es posible que el atacante use un ataque de sincronizaci\u00f3n para adivinar la firma de la URL de derivaci\u00f3n. El problema ha sido corregido al comparar la firma enviada y la calculada en tiempo constante, usando la funci\u00f3n \"Rack::Utils.secure_compare\". Se insta a usuarios que usan el plugin \"derivation_endpoint\" a actualizar a Shrine versi\u00f3n 3.3.0 o superior. Se proporciona una posible soluci\u00f3n alternativa en el aviso vinculado"}], "lastModified": "2024-11-21T05:05:09.600", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:shrinerb:shrine:*:*:*:*:*:ruby:*:*", "vulnerable": true, "matchCriteriaId": "0B363C9B-709B-49FE-AE94-196A9C185EEF", "versionEndExcluding": "3.3.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"} 