GSD-2020-27847

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects dex versions before 2.27.0.
Aliases
Aliases
CVE-2020-27847
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{
  "GSD": {
    "alias": "CVE-2020-27847",
    "description": "A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects dex versions before 2.27.0.",
    "id": "GSD-2020-27847"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-27847"
      ],
      "details": "A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects dex versions before 2.27.0.",
      "id": "GSD-2020-27847",
      "modified": "2023-12-13T01:22:11.030720Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2020-27847",
        "STATE": "PUBLIC"
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      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "dexidp/dex",
                    "version": {
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                        {
                          "version_value": "dex 2.27.0"
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          }
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    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003cv2.27.0",
          "affected_versions": "All versions before 2.27.0",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-228",
            "CWE-290",
            "CWE-937"
          ],
          "date": "2021-06-02",
          "description": "A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.",
          "fixed_versions": [],
          "identifier": "CVE-2020-27847",
          "identifiers": [
            "CVE-2020-27847",
            "GHSA-m9hp-7r99-94h5"
          ],
          "not_impacted": "",
          "package_slug": "go/github.com/dexidp/dex",
          "pubdate": "2021-05-28",
          "solution": "Unfortunately, there is no solution available yet.",
          "title": "Improper Handling of Syntactically Invalid Structure",
          "urls": [
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            "https://bugzilla.redhat.com/show_bug.cgi?id=1907732",
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          ],
          "uuid": "9141615c-5a5e-49fa-a993-2144bdcabdad",
          "versions": [
            {
              "commit": {
                "sha": "0efc245900a3f2e07cbe0b53e959e1f8f820c2f8",
                "tags": [
                  "v2.27.0"
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                "timestamp": "20201214084049"
              },
              "number": "v2.27.0"
            }
          ]
        }
      ]
    },
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                "cpe23Uri": "cpe:2.3:a:linuxfoundation:dex:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.27.0",
                "vulnerable": true
              }
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              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1907732",
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-06-02T16:32Z",
      "publishedDate": "2021-05-28T11:15Z"
    }
  }
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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