CVE-2020-26290 (GCVE-0-2020-26290)
Vulnerability from cvelistv5
Published
2020-12-28 19:15
Modified
2024-08-04 15:56
Severity ?
9.3 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Summary
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).
References
security-advisories@github.com https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8 Patch, Third Party Advisory
security-advisories@github.com https://github.com/dexidp/dex/releases/tag/v2.27.0 Third Party Advisory
security-advisories@github.com https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5 Third Party Advisory
security-advisories@github.com https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md Not Applicable, Third Party Advisory
security-advisories@github.com https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md Not Applicable, Third Party Advisory
security-advisories@github.com https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md Not Applicable, Third Party Advisory
security-advisories@github.com https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7 Not Applicable, Third Party Advisory
security-advisories@github.com https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/ Not Applicable, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8 Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/dexidp/dex/releases/tag/v2.27.0 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md Not Applicable, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md Not Applicable, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md Not Applicable, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7 Not Applicable, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/ Not Applicable, Third Party Advisory
Impacted products
Vendor Product Version
dexidp dex Version: < 2.27.0
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:56:04.350Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/dexidp/dex/releases/tag/v2.27.0"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "dex",
          "vendor": "dexidp",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.27.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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)."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-347",
              "description": "CWE-347: Improper Verification of Cryptographic Signature",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-12-28T19:15:17",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/dexidp/dex/releases/tag/v2.27.0"
        }
      ],
      "source": {
        "advisory": "GHSA-m9hp-7r99-94h5",
        "discovery": "UNKNOWN"
      },
      "title": "Critical security issues in XML encoding in Dex",
      "x_legacyV4Record": {
        "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"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "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)."
            }
          ]
        },
        "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": {
          "problemtype_data": [
            {
              "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/",
              "refsource": "MISC",
              "url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/"
            },
            {
              "name": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5",
              "refsource": "CONFIRM",
              "url": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5"
            },
            {
              "name": "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7",
              "refsource": "MISC",
              "url": "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7"
            },
            {
              "name": "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8",
              "refsource": "MISC",
              "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"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2020-26290",
    "datePublished": "2020-12-28T19:15:17",
    "dateReserved": "2020-10-01T00:00:00",
    "dateUpdated": "2024-08-04T15:56:04.350Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-26290\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2020-12-28T20:15:12.493\",\"lastModified\":\"2024-11-21T05:19:46.513\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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).\"},{\"lang\":\"es\",\"value\":\"Dex es un proveedor federado de OpenID Connect escrito en Go.\u0026#xa0;En Dex versi\u00f3n anterior a 2.27.0, presenta un conjunto cr\u00edtico de vulnerabilidades que impacta a usuarios que aprovechan el conector SAML.\u0026#xa0;Las vulnerabilidades permiten una posible omisi\u00f3n de firmas debido a problemas con la codificaci\u00f3n XML en la biblioteca Go subyacente.\u0026#xa0;Las vulnerabilidades han sido abordadas en la versi\u00f3n 2.27.0, mediante el uso de xml-roundtrip-validator de Mattermost (consulte las referencias relacionadas)\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N\",\"baseScore\":9.3,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":5.8},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H\",\"baseScore\":9.6,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":6.0}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:P/A:P\",\"baseScore\":6.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-347\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linuxfoundation:dex:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.27.0\",\"matchCriteriaId\":\"6DED3272-1D65-4A06-97D5-73FC7EE37516\"}]}]}],\"references\":[{\"url\":\"https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/dexidp/dex/releases/tag/v2.27.0\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Not Applicable\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Not Applicable\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Not Applicable\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Not Applicable\",\"Third Party Advisory\"]},{\"url\":\"https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Not Applicable\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/dexidp/dex/releases/tag/v2.27.0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Not Applicable\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Not Applicable\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Not Applicable\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Not Applicable\",\"Third Party Advisory\"]},{\"url\":\"https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Not Applicable\",\"Third Party Advisory\"]}]}}"
  }
}


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.