GSD-2021-21238

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
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.
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Aliases
CVE-2021-21238
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{
  "GSD": {
    "alias": "CVE-2021-21238",
    "description": "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.",
    "id": "GSD-2021-21238",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-21238.html",
      "https://security.archlinux.org/CVE-2021-21238"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-21238"
      ],
      "details": "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.",
      "id": "GSD-2021-21238",
      "modified": "2023-12-13T01:23:10.876543Z",
      "schema_version": "1.4.0"
    }
  },
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      },
      "affects": {
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          }
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      "impact": {
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          "availabilityImpact": "NONE",
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      "references": {
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        "discovery": "UNKNOWN"
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    },
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        {
          "affected_range": "\u003c6.5.0",
          "affected_versions": "All versions before 6.5.0",
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          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-347",
            "CWE-937"
          ],
          "date": "2021-01-29",
          "description": "PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 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 ",
          "fixed_versions": [
            "6.5.0"
          ],
          "identifier": "CVE-2021-21238",
          "identifiers": [
            "CVE-2021-21238",
            "GHSA-f4g9-h89h-jgv9"
          ],
          "not_impacted": "All versions starting from 6.5.0",
          "package_slug": "pypi/pysaml2",
          "pubdate": "2021-01-21",
          "solution": "Upgrade to version 6.5.0 or above.",
          "title": "Improper Verification of Cryptographic Signature",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-21238"
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          "uuid": "953fd629-865b-4af3-ac39-ab0c2d588a77"
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          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
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          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
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            "attackVector": "NETWORK",
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            "confidentialityImpact": "NONE",
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        }
      },
      "lastModifiedDate": "2021-01-29T17:58Z",
      "publishedDate": "2021-01-21T15:15Z"
    }
  }
}



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