CVE-2020-26244

{"containers": {"cna": {"affected": [{"product": "pyoidc", "vendor": "OpenIDC", "versions": [{"status": "affected", "version": "< 1.2.1"}]}], "descriptions": [{"lang": "en", "value": "Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2) JWA `none` algorithm was allowed in all flows. 3) oic.consumer.Consumer.parse_authz returns an unverified IdToken. The verification of the token was left to the discretion of the implementator. 4) iat claim was not checked for sanity (i.e. it could be in the future). These issues are patched in version 1.2.1."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-325", "description": "CWE-325 Missing Required Cryptographic Step", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-347", "description": "CWE-347 Improper Verification of Cryptographic Signature", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-12-02T20:05:15.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg"}, {"tags": ["x_refsource_MISC"], "url": "https://pypi.org/project/oic/"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"}], "source": {"advisory": "GHSA-4fjv-pmhg-3rfg", "discovery": "UNKNOWN"}, "title": "Cryptographic issues in Python oic", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2020-26244", "STATE": "PUBLIC", "TITLE": "Cryptographic issues in Python oic"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "pyoidc", "version": {"version_data": [{"version_value": "< 1.2.1"}]}}]}, "vendor_name": "OpenIDC"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2) JWA `none` algorithm was allowed in all flows. 3) oic.consumer.Consumer.parse_authz returns an unverified IdToken. The verification of the token was left to the discretion of the implementator. 4) iat claim was not checked for sanity (i.e. it could be in the future). These issues are patched in version 1.2.1."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-325 Missing Required Cryptographic Step"}]}, {"description": [{"lang": "eng", "value": "CWE-347 Improper Verification of Cryptographic Signature"}]}]}, "references": {"reference_data": [{"name": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg", "refsource": "CONFIRM", "url": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg"}, {"name": "https://pypi.org/project/oic/", "refsource": "MISC", "url": "https://pypi.org/project/oic/"}, {"name": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498", "refsource": "MISC", "url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"}, {"name": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1", "refsource": "MISC", "url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"}]}, "source": {"advisory": "GHSA-4fjv-pmhg-3rfg", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T15:56:04.228Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://pypi.org/project/oic/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2020-26244", "datePublished": "2020-12-02T20:05:15.000Z", "dateReserved": "2020-10-01T00:00:00.000Z", "dateUpdated": "2024-08-04T15:56:04.228Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "pyoidc", "vendor": "OpenIDC", "versions": [{"status": "affected", "version": "< 1.2.1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:python_openid_connect_project:python_openid_connect:*:*:*:*:*:*:*:*", "matchCriteriaId": "453CE2D9-9AE1-4502-8386-C5E018BA8EAC", "versionEndExcluding": "1.2.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2) JWA `none` algorithm was allowed in all flows. 3) oic.consumer.Consumer.parse_authz returns an unverified IdToken. The verification of the token was left to the discretion of the implementator. 4) iat claim was not checked for sanity (i.e. it could be in the future). These issues are patched in version 1.2.1."}, {"lang": "es", "value": "Python oic es una implementaci\u00f3n de Python OpenID Connect.&#xa0;En Python oic versiones anteriores a 1.2.1, se presentan varios problemas criptogr\u00e1ficos relacionados que afectan las implementaciones de los clientes que usan la biblioteca.&#xa0;Los problemas son: 1) El algoritmo de firma IdToken no se comprob\u00f3 autom\u00e1ticamente, sino solo si el algoritmo esperado era pasado como un kwarg.&#xa0;2) Se permiti\u00f3 el algoritmo JWA \"none\" en todos los flujos.&#xa0;3) oic.consumer.Consumer.parse_authz devuelve un IdToken no verificado.&#xa0;La comprobaci\u00f3n del token se dej\u00f3 a discreci\u00f3n del implementador.&#xa0;4) el reclamo de iat no se comprob\u00f3 por sanidad (es decir, podr\u00eda ser en el futuro).&#xa0;Estos problemas est\u00e1n parcheados en la versi\u00f3n 1.2.1"}], "id": "CVE-2020-26244", "lastModified": "2026-06-17T03:07:54.433", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 4.9, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-12-02T20:15:13.430", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg"}, {"source": "security-advisories@github.com", "tags": ["Product", "Vendor Advisory"], "url": "https://pypi.org/project/oic/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Product", "Vendor Advisory"], "url": "https://pypi.org/project/oic/"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-325"}, {"lang": "en", "value": "CWE-347"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-347"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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