CVE-2020-1911

{"containers": {"cna": {"affected": [{"product": "Hermes", "vendor": "Facebook", "versions": [{"status": "affected", "version": "commit prior to fe52854cdf6725c2eaa9e125995da76e6ceb27da"}]}], "descriptions": [{"lang": "en", "value": "A type confusion vulnerability when resolving properties of JavaScript objects with specially-crafted prototype chains in Facebook Hermes prior to commit fe52854cdf6725c2eaa9e125995da76e6ceb27da allows attackers to potentially execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-843", "description": "CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-09-04T02:35:19.000Z", "orgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "shortName": "facebook"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://www.facebook.com/security/advisories/cve-2020-1911"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/facebook/hermes/commit/fe52854cdf6725c2eaa9e125995da76e6ceb27da"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve-assign@fb.com", "DATA_ASSIGNED": "2020-09-03", "ID": "CVE-2020-1911", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Hermes", "version": {"version_data": [{"version_value": "commit prior to fe52854cdf6725c2eaa9e125995da76e6ceb27da"}]}}]}, "vendor_name": "Facebook"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A type confusion vulnerability when resolving properties of JavaScript objects with specially-crafted prototype chains in Facebook Hermes prior to commit fe52854cdf6725c2eaa9e125995da76e6ceb27da allows attackers to potentially execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')"}]}]}, "references": {"reference_data": [{"name": "https://www.facebook.com/security/advisories/cve-2020-1911", "refsource": "CONFIRM", "url": "https://www.facebook.com/security/advisories/cve-2020-1911"}, {"name": "https://github.com/facebook/hermes/commit/fe52854cdf6725c2eaa9e125995da76e6ceb27da", "refsource": "CONFIRM", "url": "https://github.com/facebook/hermes/commit/fe52854cdf6725c2eaa9e125995da76e6ceb27da"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T06:53:59.783Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://www.facebook.com/security/advisories/cve-2020-1911"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/facebook/hermes/commit/fe52854cdf6725c2eaa9e125995da76e6ceb27da"}]}]}, "cveMetadata": {"assignerOrgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "assignerShortName": "facebook", "cveId": "CVE-2020-1911", "datePublished": "2020-09-04T02:35:20.000Z", "dateReserved": "2019-12-02T00:00:00.000Z", "dateUpdated": "2024-08-04T06:53:59.783Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Hermes", "vendor": "Facebook", "versions": [{"status": "affected", "version": "commit prior to fe52854cdf6725c2eaa9e125995da76e6ceb27da"}]}], "source": "cve-assign@fb.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:facebook:hermes:*:*:*:*:*:*:*:*", "matchCriteriaId": "A050D3EF-B82D-4B22-8504-42B384E738B9", "versionEndExcluding": "0.4.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A type confusion vulnerability when resolving properties of JavaScript objects with specially-crafted prototype chains in Facebook Hermes prior to commit fe52854cdf6725c2eaa9e125995da76e6ceb27da allows attackers to potentially execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected."}, {"lang": "es", "value": "Una vulnerabilidad de confusi\u00f3n de tipos al resolver propiedades de objetos JavaScript con cadenas de prototipos especialmente dise\u00f1adas en Facebook Hermes versiones anteriores al commit fe52854cdf6725c2eaa9e125995da76e6ceb27da, permite a atacantes ejecutar potencialmente c\u00f3digo arbitrario por medio de un JavaScript dise\u00f1ado. Tome en cuenta que esto solo se puede explotar si la aplicaci\u00f3n que usa Hermes permite una evaluaci\u00f3n de JavaScript que no es confiable. Por lo tanto, la mayor\u00eda de las aplicaciones React Native no est\u00e1n afectadas"}], "id": "CVE-2020-1911", "lastModified": "2026-06-17T03:02:36.037", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "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"}]}, "published": "2020-09-04T03:15:09.700", "references": [{"source": "cve-assign@fb.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/facebook/hermes/commit/fe52854cdf6725c2eaa9e125995da76e6ceb27da"}, {"source": "cve-assign@fb.com", "tags": ["Third Party Advisory"], "url": "https://www.facebook.com/security/advisories/cve-2020-1911"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/facebook/hermes/commit/fe52854cdf6725c2eaa9e125995da76e6ceb27da"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.facebook.com/security/advisories/cve-2020-1911"}], "sourceIdentifier": "cve-assign@fb.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-843"}], "source": "cve-assign@fb.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-843"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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