CVE-2021-21317

{"containers": {"cna": {"affected": [{"product": "uap-core", "vendor": "ua-parser", "versions": [{"status": "affected", "version": "< 0.11.0"}]}], "descriptions": [{"lang": "en", "value": "uap-core in an open-source npm package which contains the core of BrowserScope's original user agent string parser. In uap-core before version 0.11.0, some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This is fixed in version 0.11.0. Downstream packages such as uap-python, uap-ruby etc which depend upon uap-core follow different version schemes."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "description": "CWE-400: Uncontrolled Resource Consumption", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-02-16T17:45:16.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ua-parser/uap-core/security/advisories/GHSA-p4pj-mg4r-x6v4"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/ua-parser/uap-core/commit/dc9925d458214cfe87b93e35346980612f6ae96c"}, {"tags": ["x_refsource_MISC"], "url": "https://www.npmjs.com/package/uap-core"}], "source": {"advisory": "GHSA-p4pj-mg4r-x6v4", "discovery": "UNKNOWN"}, "title": "Denial of Service in uap-core", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21317", "STATE": "PUBLIC", "TITLE": "Denial of Service in uap-core"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "uap-core", "version": {"version_data": [{"version_value": "< 0.11.0"}]}}]}, "vendor_name": "ua-parser"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "uap-core in an open-source npm package which contains the core of BrowserScope's original user agent string parser. In uap-core before version 0.11.0, some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This is fixed in version 0.11.0. Downstream packages such as uap-python, uap-ruby etc which depend upon uap-core follow different version schemes."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-400: Uncontrolled Resource Consumption"}]}]}, "references": {"reference_data": [{"name": "https://github.com/ua-parser/uap-core/security/advisories/GHSA-p4pj-mg4r-x6v4", "refsource": "CONFIRM", "url": "https://github.com/ua-parser/uap-core/security/advisories/GHSA-p4pj-mg4r-x6v4"}, {"name": "https://github.com/ua-parser/uap-core/commit/dc9925d458214cfe87b93e35346980612f6ae96c", "refsource": "MISC", "url": "https://github.com/ua-parser/uap-core/commit/dc9925d458214cfe87b93e35346980612f6ae96c"}, {"name": "https://www.npmjs.com/package/uap-core", "refsource": "MISC", "url": "https://www.npmjs.com/package/uap-core"}]}, "source": {"advisory": "GHSA-p4pj-mg4r-x6v4", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:09:15.054Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/ua-parser/uap-core/security/advisories/GHSA-p4pj-mg4r-x6v4"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/ua-parser/uap-core/commit/dc9925d458214cfe87b93e35346980612f6ae96c"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.npmjs.com/package/uap-core"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21317", "datePublished": "2021-02-16T17:45:16.000Z", "dateReserved": "2020-12-22T00:00:00.000Z", "dateUpdated": "2024-08-03T18:09:15.054Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "uap-core", "vendor": "ua-parser", "versions": [{"status": "affected", "version": "< 0.11.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:uap-core_project:uap-core:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "77C70DB0-831D-4909-B87A-839C80F96572", "versionEndExcluding": "0.11.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "uap-core in an open-source npm package which contains the core of BrowserScope's original user agent string parser. In uap-core before version 0.11.0, some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This is fixed in version 0.11.0. Downstream packages such as uap-python, uap-ruby etc which depend upon uap-core follow different version schemes."}, {"lang": "es", "value": "uap-core en un paquete npm de c\u00f3digo abierto que contiene el core del analizador de cadenas del agente de usuario original de BrowserScope.&#xa0;En uap-core versiones anteriores a 0.11.0, algunas expresiones regulares son vulnerables a una denegaci\u00f3n de servicio de expresi\u00f3n regular (REDoS) debido a la superposici\u00f3n de grupos de captura.&#xa0;Esto permite a atacantes remotos sobrecargar un servidor configurando el encabezado User-Agent en una petici\u00f3n HTTP(S) en cadenas largas dise\u00f1adas maliciosamente.&#xa0;Esto es corregido en versi\u00f3n 0.11.0.&#xa0;Los paquetes posteriores como uap-python, uap-ruby, etc., que dependen de uap-core, siguen esquemas de versiones diferentes"}], "id": "CVE-2021-21317", "lastModified": "2026-06-17T03:35:17.093", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-16T18:15:12.583", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/ua-parser/uap-core/commit/dc9925d458214cfe87b93e35346980612f6ae96c"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/ua-parser/uap-core/security/advisories/GHSA-p4pj-mg4r-x6v4"}, {"source": "security-advisories@github.com", "tags": ["Product", "Third Party Advisory"], "url": "https://www.npmjs.com/package/uap-core"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/ua-parser/uap-core/commit/dc9925d458214cfe87b93e35346980612f6ae96c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/ua-parser/uap-core/security/advisories/GHSA-p4pj-mg4r-x6v4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Product", "Third Party Advisory"], "url": "https://www.npmjs.com/package/uap-core"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-1333"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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