CVE-2021-3827 (GCVE-0-2021-3827)

Vulnerability from cvelistv5 – Published: 2022-08-23 15:52 – Updated: 2024-08-03 17:09
VLAI?
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.
Severity ?
No CVSS data available.
CWE
  • CWE-287 - - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
n/a keycloak Affected: Fixed in v18.0.0
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",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "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\": true, \"criteria\": \"cpe:2.3:a:redhat:single_sign-on:7.5.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"A69E9AB7-AC48-4448-BE34-68AC0AA0CD46\"}]}, {\"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\": \"AND\", \"nodes\": [{\"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\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"F4CFF558-3C47-480D-A2F0-BABF26042943\"}]}]}]",
      "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.\"}]",
      "id": "CVE-2021-3827",
      "lastModified": "2024-11-21T06:22:33.163",
      "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\", \"baseScore\": 6.8, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 1.6, \"impactScore\": 5.2}]}",
      "published": "2022-08-23T16:15:10.030",
      "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\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2021-3827\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2007512\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Issue Tracking\", \"Vendor Advisory\"]}, {\"url\": \"https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}]",
      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"secalert@redhat.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-287\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-287\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-3827\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2022-08-23T16:15:10.030\",\"lastModified\":\"2024-11-21T06:22:33.163\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"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\",\"baseScore\":6.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.6,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"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\":true,\"criteria\":\"cpe:2.3:a:redhat:single_sign-on:7.5.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A69E9AB7-AC48-4448-BE34-68AC0AA0CD46\"}]},{\"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\":\"AND\",\"nodes\":[{\"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\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F4CFF558-3C47-480D-A2F0-BABF26042943\"}]}]}],\"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\"]},{\"url\":\"https://access.redhat.com/security/cve/CVE-2021-3827\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2007512\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Vendor Advisory\"]},{\"url\":\"https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"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 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.