CVE-2020-15237

{"containers": {"cna": {"affected": [{"product": "shrine", "vendor": "shrinerb", "versions": [{"status": "affected", "version": "< 3.3.0"}]}], "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."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-208", "description": "{\"CWE-208\":\"Observable Timing Discrepancy\"}", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-203", "description": "{\"CWE-203\":\"Observable Differences in Behavior to Error Inputs\"}", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-10-05T18:30:13.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0"}], "source": {"advisory": "GHSA-5jjv-x4fq-qjwp", "discovery": "UNKNOWN"}, "title": "Timing attack in Shrine", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2020-15237", "STATE": "PUBLIC", "TITLE": "Timing attack in Shrine"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "shrine", "version": {"version_data": [{"version_value": "< 3.3.0"}]}}]}, "vendor_name": "shrinerb"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "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."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "{\"CWE-208\":\"Observable Timing Discrepancy\"}"}]}, {"description": [{"lang": "eng", "value": "{\"CWE-203\":\"Observable Differences in Behavior to Error Inputs\"}"}]}]}, "references": {"reference_data": [{"name": "https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp", "refsource": "CONFIRM", "url": "https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp"}, {"name": "https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0", "refsource": "MISC", "url": "https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0"}]}, "source": {"advisory": "GHSA-5jjv-x4fq-qjwp", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T13:08:22.833Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2020-15237", "datePublished": "2020-10-05T18:30:14.000Z", "dateReserved": "2020-06-25T00:00:00.000Z", "dateUpdated": "2024-08-04T13:08:22.833Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "shrine", "vendor": "shrinerb", "versions": [{"status": "affected", "version": "< 3.3.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:shrinerb:shrine:*:*:*:*:*:ruby:*:*", "matchCriteriaId": "0B363C9B-709B-49FE-AE94-196A9C185EEF", "versionEndExcluding": "3.3.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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"}], "id": "CVE-2020-15237", "lastModified": "2026-06-17T02:56:19.943", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-10-05T19:15:15.103", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-203"}, {"lang": "en", "value": "CWE-208"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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