{"containers": {"cna": {"affected": [{"product": "pow_assent", "vendor": "pow-auth", "versions": [{"lessThan": "0.4.4", "status": "affected", "version": "< 0.4.4", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "The use of `String.to_atom/1` in PowAssent is susceptible to denial of service attacks. In `PowAssent.Phoenix.AuthorizationController` a value is fetched from the user provided params, and `String.to_atom/1` is used to convert the binary value to an atom so it can be used to fetch the provider configuration value. This is unsafe as it is user provided data, and can be used to fill up the whole atom table of ~1M which will cause the app to crash."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2019-11-25T17:11:19", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986"}, {"tags": ["x_refsource_MISC"], "url": "https://hex.pm/packages/pow_assent"}, {"tags": ["x_refsource_MISC"], "url": "http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf"}], "source": {"advisory": "GHSA-368c-xvrv-x986", "discovery": "UNKNOWN"}, "title": "PowAssent is susceptible to denial of service attacks", "workarounds": [{"lang": "en", "value": "A plug can be used to validate conn.params[&quot;provider&quot;] before it reaches the PowAssent.Phoenix.AuthorizationController."}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2019-16764", "STATE": "PUBLIC", "TITLE": "PowAssent is susceptible to denial of service attacks"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "pow_assent", "version": {"version_data": [{"version_affected": "<", "version_name": "< 0.4.4", "version_value": "0.4.4"}]}}]}, "vendor_name": "pow-auth"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The use of `String.to_atom/1` in PowAssent is susceptible to denial of service attacks. In `PowAssent.Phoenix.AuthorizationController` a value is fetched from the user provided params, and `String.to_atom/1` is used to convert the binary value to an atom so it can be used to fetch the provider configuration value. This is unsafe as it is user provided data, and can be used to fill up the whole atom table of ~1M which will cause the app to crash."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-400 Uncontrolled Resource Consumption"}]}]}, "references": {"reference_data": [{"name": "https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986", "refsource": "CONFIRM", "url": "https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986"}, {"name": "https://hex.pm/packages/pow_assent", "refsource": "MISC", "url": "https://hex.pm/packages/pow_assent"}, {"name": "http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1", "refsource": "MISC", "url": "http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1"}, {"name": "https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf", "refsource": "MISC", "url": "https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf"}]}, "source": {"advisory": "GHSA-368c-xvrv-x986", "discovery": "UNKNOWN"}, "work_around": [{"lang": "en", "value": "A plug can be used to validate conn.params[&quot;provider&quot;] before it reaches the PowAssent.Phoenix.AuthorizationController."}]}}}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2019-16764", "datePublished": "2019-11-25T17:11:19", "dateReserved": "2019-09-24T00:00:00", "dateUpdated": "2019-11-25T17:11:19", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:powauth:powassent:*:*:*:*:*:*:*:*", "matchCriteriaId": "A7675EB0-7582-4883-A50F-889C5DC77B95", "versionEndExcluding": "0.4.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "The use of `String.to_atom/1` in PowAssent is susceptible to denial of service attacks. In `PowAssent.Phoenix.AuthorizationController` a value is fetched from the user provided params, and `String.to_atom/1` is used to convert the binary value to an atom so it can be used to fetch the provider configuration value. This is unsafe as it is user provided data, and can be used to fill up the whole atom table of ~1M which will cause the app to crash."}, {"lang": "es", "value": "El uso de \"String.to_atom/1\" en PowAssent es susceptible a ataques de denegaci\u00f3n de servicio. En \"PowAssent.Phoenix.AuthorizationController\" se obtiene un valor de los par\u00e1metros proporcionados por parte el usuario, y \"String.to_atom/1\" es usado para convertir el valor binario en un \u00e1tomo para que pueda usarse para obtener el valor de configuraci\u00f3n del proveedor. Esto no es seguro, ya que son datos suministrados por parte el usuario, y se pueden ser usados para llenar toda la tabla de \u00e1tomos de ~1M, lo que causar\u00e1 que la aplicaci\u00f3n se bloque\u00e9"}], "id": "CVE-2019-16764", "lastModified": "2021-10-28T13:21:40.897", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2019-11-25T17:15:11.713", "references": [{"source": "security-advisories@github.com", "tags": ["Product"], "url": "http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://hex.pm/packages/pow_assent"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-400"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}