cve-2021-3827
Vulnerability from cvelistv5
Published
2022-08-23 15:52
Modified
2024-08-03 17:09
Severity
Summary
A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user's credentials. The highest threat from this vulnerability is to confidentiality and integrity.
References
SourceURLTags
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2021-3827Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2007512Issue Tracking, Vendor Advisory
secalert@redhat.comhttps://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0dPatch, Third Party Advisory
secalert@redhat.comhttps://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3vThird Party Advisory
Impacted products
VendorProduct
n/akeycloak
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:09:09.546Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2021-3827"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "keycloak",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Fixed in v18.0.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user\u0027s credentials. The highest threat from this vulnerability is to confidentiality and integrity."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287 - Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-08-23T15:52:50",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2021-3827"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2021-3827",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "keycloak",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Fixed in v18.0.0"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user\u0027s credentials. The highest threat from this vulnerability is to confidentiality and integrity."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-287 - Improper Authentication"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v",
              "refsource": "MISC",
              "url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v"
            },
            {
              "name": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d",
              "refsource": "MISC",
              "url": "https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512",
              "refsource": "MISC",
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2007512"
            },
            {
              "name": "https://access.redhat.com/security/cve/CVE-2021-3827",
              "refsource": "MISC",
              "url": "https://access.redhat.com/security/cve/CVE-2021-3827"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-3827",
    "datePublished": "2022-08-23T15:52:50",
    "dateReserved": "2021-09-24T00:00:00",
    "dateUpdated": "2024-08-03T17:09:09.546Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-3827\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2022-08-23T16:15:10.030\",\"lastModified\":\"2022-11-30T18:46:55.567\",\"vulnStatus\":\"Analyzed\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user\u0027s credentials. The highest threat from this vulnerability is to confidentiality and integrity.\"},{\"lang\":\"es\",\"value\":\"Se ha encontrado un fallo en keycloak, en el que el flujo de vinculaci\u00f3n ECP por defecto permite omitir otros flujos de autenticaci\u00f3n. Al explotar este comportamiento, un atacante puede omitir la autenticaci\u00f3n MFA mediante el env\u00edo de una petici\u00f3n SOAP con un encabezado AuthnRequest y Authorization con las credenciales del usuario. La mayor amenaza de esta vulnerabilidad es para la confidencialidad y la integridad.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\",\"baseScore\":6.8,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.6,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]},{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"18.0.0\",\"matchCriteriaId\":\"EC308493-1A81-4D85-B568-ECAA9AE15A82\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"142AD0DD-4CF3-4D74-9442-459CE3347E3A\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*\",\"matchCriteriaId\":\"053C1B35-3869-41C2-9551-044182DE0A64\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:single_sign-on:7.5.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A69E9AB7-AC48-4448-BE34-68AC0AA0CD46\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F4CFF558-3C47-480D-A2F0-BABF26042943\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:openshift_container_platform:4.8:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"91B493F0-5542-49F7-AAAE-E6CA6E468D7B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:openshift_container_platform:4.9:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"81609549-25CE-4C8A-9DE3-170D23704208\"}]}]}],\"references\":[{\"url\":\"https://access.redhat.com/security/cve/CVE-2021-3827\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2007512\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\",\"Vendor Advisory\"]},{\"url\":\"https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.