GHSA-G6J2-CH25-5MMV

Vulnerability from github – Published: 2020-03-25 16:52 – Updated: 2021-01-08 20:24
VLAI?
Summary
Missing Token Replay Detection in Saml2 Authentication services for ASP.NET
Details

Impact

Token Replay Detection is an important defence in depth measure for Single Sign On solutions. In all previous 2.X versions, the Token Replay Detection is not properly implemented.

Note that version 1.0.1 is not affected. It has a correct Token Replay Implementation and is safe to use.

Patches

The 2.5.0 version is patched.

Workarounds

There are no workarounds with existing versions. Fixing the issue requires code updates.

References

https://en.wikipedia.org/wiki/Replay_attack

For more information

If you have any questions or comments about this advisory: * Comment on #711. * Email us at security@sustainsys.com if you think that there are further security issues.

Severity ?
8.2 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Sustainsys.Saml2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-5261"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-294"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-03-25T01:16:34Z",
    "nvd_published_at": "2020-03-25T02:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nToken Replay Detection is an important defence in depth measure for Single Sign On solutions. In all previous 2.X versions, the Token Replay Detection is not properly implemented. \n\nNote that version 1.0.1 is not affected. It has a correct Token Replay Implementation and is safe to use.\n\n### Patches\nThe 2.5.0 version is patched.\n\n### Workarounds\nThere are no workarounds with existing versions. Fixing the issue requires code updates.\n\n### References\nhttps://en.wikipedia.org/wiki/Replay_attack\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Comment on #711.\n* Email us at [security@sustainsys.com](mailto:security@susatinsys.com) if you think that there are further security issues.",
  "id": "GHSA-g6j2-ch25-5mmv",
  "modified": "2021-01-08T20:24:58Z",
  "published": "2020-03-25T16:52:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Sustainsys/Saml2/security/advisories/GHSA-g6j2-ch25-5mmv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5261"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Sustainsys/Saml2/issues/711"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Sustainsys/Saml2/commit/e58e0a1aff2b1ead6aca080b7cdced55ee6d5241"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Missing Token Replay Detection in Saml2 Authentication services for ASP.NET"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.