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

{
  "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"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "dexidp/dex",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "dex 2.27.0"
                        }
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                    }
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            "value": "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."
          }
        ]
      },
      "problemtype": {
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                "value": "CWE-228-\u003eCWE-290"
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          {
            "name": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/",
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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"
                ],
                "timestamp": "20201214084049"
              },
              "number": "v2.27.0"
            }
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        }
      ]
    },
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        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:linuxfoundation:dex:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.27.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
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        "description": {
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              "value": "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."
            }
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        },
        "problemtype": {
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            {
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                  "value": "CWE-290"
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        "references": {
          "reference_data": [
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1907732",
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                "Issue Tracking",
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              "url": "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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