GHSA-qf7v-8hj3-4xw7
Vulnerability from github
Published
2020-05-06 19:41
Modified
2024-10-23 15:55
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Summary
Improper Verification of Cryptographic Signature in PySAML2
Details

PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is affected by XML Signature Wrapping (XSW). The signature information and the node/object that is signed can be in different places and thus the signature verification will succeed, but the wrong data will be used. This specifically affects the verification of assertions that have been signed.

Show details on source website

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pysaml2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-5390"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-05-06T19:39:39Z",
    "nvd_published_at": "2020-01-13T19:15:00Z",
    "severity": "HIGH"
  },
  "details": "PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is affected by XML Signature Wrapping (XSW). The signature information and the node/object that is signed can be in different places and thus the signature verification will succeed, but the wrong data will be used. This specifically affects the verification of assertions that have been signed.",
  "id": "GHSA-qf7v-8hj3-4xw7",
  "modified": "2024-10-23T15:55:36Z",
  "published": "2020-05-06T19:41:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5390"
    },
    {
      "type": "WEB",
      "url": "https://github.com/IdentityPython/pysaml2/commit/5e9d5acbcd8ae45c4e736ac521fd2df5b1c62e25"
    },
    {
      "type": "WEB",
      "url": "https://github.com/IdentityPython/pysaml2/commit/f27c7e7a7010f83380566a219fd6a290a00f2b6e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/IdentityPython/pysaml2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/IdentityPython/pysaml2/blob/master/CHANGELOG.md#500-2020-01-13"
    },
    {
      "type": "WEB",
      "url": "https://github.com/IdentityPython/pysaml2/releases"
    },
    {
      "type": "WEB",
      "url": "https://github.com/IdentityPython/pysaml2/releases/tag/v5.0.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-qf7v-8hj3-4xw7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/pysaml2/PYSEC-2020-94.yaml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/02/msg00025.html"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/pysaml2/5.0.0"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4245-1"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2020/dsa-4630"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Improper Verification of Cryptographic Signature in PySAML2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.