gsd-2020-26290
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references).
Aliases
Aliases
CVE-2020-26290


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-26290",
    "description": "Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references).",
    "id": "GSD-2020-26290",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-26290.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-26290"
      ],
      "details": "Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references).",
      "id": "GSD-2020-26290",
      "modified": "2023-12-13T01:22:08.712061Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-26290",
        "STATE": "PUBLIC",
        "TITLE": "Critical security issues in XML encoding in Dex"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "dex",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 2.27.0"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "dexidp"
            }
          ]
        }
      },
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          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
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          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-347: Improper Verification of Cryptographic Signature"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md",
            "refsource": "MISC",
            "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md"
          },
          {
            "name": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md",
            "refsource": "MISC",
            "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md"
          },
          {
            "name": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md",
            "refsource": "MISC",
            "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md"
          },
          {
            "name": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/",
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            "url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/"
          },
          {
            "name": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5",
            "refsource": "CONFIRM",
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          },
          {
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            "url": "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7"
          },
          {
            "name": "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8",
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            "url": "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8"
          },
          {
            "name": "https://github.com/dexidp/dex/releases/tag/v2.27.0",
            "refsource": "MISC",
            "url": "https://github.com/dexidp/dex/releases/tag/v2.27.0"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-m9hp-7r99-94h5",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
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        {
          "affected_range": "\u003cv2.27.0",
          "affected_versions": "All versions before 2.27.0",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-347",
            "CWE-937"
          ],
          "date": "2020-12-30",
          "description": "Dex is a federated OpenID Connect provider written in Go. In Dex there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed by using the xml-roundtrip-validator from Mattermost (see related references).",
          "fixed_versions": [
            "v2.27.0"
          ],
          "identifier": "CVE-2020-26290",
          "identifiers": [
            "CVE-2020-26290",
            "GHSA-m9hp-7r99-94h5"
          ],
          "not_impacted": "All versions starting from 2.27.0",
          "package_slug": "go/github.com/dexidp/dex",
          "pubdate": "2020-12-28",
          "solution": "Upgrade to version 2.27.0 or higher.",
          "title": "Improper Verification of Cryptographic Signature",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-26290"
          ],
          "uuid": "b573314f-62cb-48b6-a6bd-1f37069763ad",
          "versions": [
            {
              "commit": {
                "sha": "0efc245900a3f2e07cbe0b53e959e1f8f820c2f8",
                "tags": [
                  "v2.27.0"
                ],
                "timestamp": "20201214084049"
              },
              "number": "v2.27.0"
            }
          ]
        },
        {
          "affected_range": "\u003e=2.1.0 \u003c2.27.0",
          "affected_versions": "All versions starting from 2.1.0 before 2.27.0",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
          "cwe_ids": [
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            "CWE-347",
            "CWE-707",
            "CWE-937"
          ],
          "date": "2021-12-20",
          "description": "Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references).",
          "fixed_versions": [
            "2.27.0"
          ],
          "identifier": "CVE-2020-26290",
          "identifiers": [
            "GHSA-m9hp-7r99-94h5",
            "CVE-2020-26290"
          ],
          "not_impacted": "All versions before 2.1.0, all versions starting from 2.27.0",
          "package_slug": "go/github.com/dexidp/dex/connector/saml",
          "pubdate": "2021-12-20",
          "solution": "Upgrade to version 2.27.0 or above.",
          "title": "Improper Verification of Cryptographic Signature",
          "urls": [
            "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5",
            "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7",
            "https://nvd.nist.gov/vuln/detail/CVE-2020-26290",
            "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8",
            "https://github.com/dexidp/dex/releases/tag/v2.27.0",
            "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md",
            "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md",
            "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md",
            "https://github.com/advisories/GHSA-m9hp-7r99-94h5"
          ],
          "uuid": "e9c291a1-0a6f-465b-b0da-139a6efd8a93"
        }
      ]
    },
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                "cpe_name": [],
                "versionEndExcluding": "2.27.0",
                "vulnerable": true
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 6.0
        }
      },
      "lastModifiedDate": "2020-12-30T15:12Z",
      "publishedDate": "2020-12-28T20:15Z"
    }
  }
}


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