CVE-2021-21238

{"id": "CVE-2021-21238", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2021-01-21T15:15:14.110", "references": [{"url": "https://github.com/IdentityPython/pysaml2/commit/1d8fd268f5bf887480a403a7a5ef8f048157cc14", "tags": ["Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/IdentityPython/pysaml2/releases/tag/v6.5.0", "tags": ["Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-f4g9-h89h-jgv9", "tags": ["Third Party Advisory"], "source": "security-advisories@github.com"}, {"url": "https://pypi.org/project/pysaml2", "tags": ["Product", "Third Party Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-347"}]}], "descriptions": [{"lang": "en", "value": "PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. All users of pysaml2 that need to validate signed SAML documents are impacted. The vulnerability is a variant of XML Signature wrapping because it did not validate the SAML document against an XML schema. This allowed invalid XML documents to be processed and such a document can trick pysaml2 with a wrapped signature. This is fixed in PySAML2 6.5.0."}, {"lang": "es", "value": "PySAML2 es una implementaci\u00f3n de Python pura de SAML Versi\u00f3n 2 Est\u00e1ndar. PySAML2 versiones anteriores a 6.5.0, presenta una verificaci\u00f3n inapropiada de una vulnerabilidad de firma criptogr\u00e1fica. Todos los usuarios de pysaml2 que necesitan comprobar documentos SAML firmados est\u00e1n afectados. La vulnerabilidad es una variante del empaquetado de firma XML porque no valid\u00f3 el documento SAML con un esquema XML. Esto permiti\u00f3 que documentos XML sean procesados no v\u00e1lidos y dicho documento puede enga\u00f1ar a pysaml2 con una firma empaquetada. Esto es corregido en PySAML2 versi\u00f3n 6.5.0"}], "lastModified": "2021-01-29T17:58:02.147", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:pysaml2_project:pysaml2:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A94B9227-93A8-4D3D-A8C3-E56F3A84F8B2", "versionEndExcluding": "6.5.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}