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PYSEC-2021-48

Vulnerability from pysec - Published: 2021-01-21 15:15 - Updated: 2021-01-29 17:58
VLAI
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.

Impacted products
Name purl
pysaml2 pkg:pypi/pysaml2
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pysaml2",
        "purl": "pkg:pypi/pysaml2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1d8fd268f5bf887480a403a7a5ef8f048157cc14"
            }
          ],
          "repo": "https://github.com/IdentityPython/pysaml2",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.3",
        "1.0.1",
        "1.0.2",
        "1.0.3",
        "1.1.0",
        "2.0.0",
        "2.1.0",
        "2.2.0",
        "2.3.0",
        "2.4.0",
        "3.0.0",
        "3.0.2",
        "4.0.0",
        "4.0.1",
        "4.0.2",
        "4.0.3",
        "4.0.4",
        "4.0.5rc1",
        "4.0.5",
        "4.1.0",
        "4.2.0",
        "4.3.0",
        "4.4.0",
        "4.5.0",
        "4.6.0",
        "4.6.1",
        "4.6.2",
        "4.6.3",
        "4.6.4",
        "4.6.5",
        "4.7.0",
        "4.8.0",
        "4.9.0",
        "5.0.0",
        "5.1.0",
        "5.2.0",
        "5.3.0",
        "5.4.0",
        "6.0.0",
        "6.1.0",
        "6.2.0",
        "6.3.0",
        "6.3.1",
        "6.4.0",
        "6.4.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-21238",
    "GHSA-f4g9-h89h-jgv9"
  ],
  "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": "PYSEC-2021-48",
  "modified": "2021-01-29T17:58:00Z",
  "published": "2021-01-21T15:15:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/pysaml2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/IdentityPython/pysaml2/releases/tag/v6.5.0"
    },
    {
      "type": "FIX",
      "url": "https://github.com/IdentityPython/pysaml2/commit/1d8fd268f5bf887480a403a7a5ef8f048157cc14"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-f4g9-h89h-jgv9"
    }
  ]
}



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