gsd-2020-27826
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.
Aliases
Aliases
CVE-2020-27826


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-27826",
    "description": "A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user\u0027s metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.",
    "id": "GSD-2020-27826",
    "references": [
      "https://access.redhat.com/errata/RHSA-2020:5533",
      "https://access.redhat.com/errata/RHSA-2020:5528",
      "https://access.redhat.com/errata/RHSA-2020:5527",
      "https://access.redhat.com/errata/RHSA-2020:5526",
      "https://security.archlinux.org/CVE-2020-27826"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-27826"
      ],
      "details": "A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user\u0027s metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.",
      "id": "GSD-2020-27826",
      "modified": "2023-12-13T01:22:10.707919Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2020-27826",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "keycloak",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "keycloak 12.0.0"
                        }
                      ]
                    }
                  }
                ]
              },
              "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 before version 12.0.0 where it is possible to update the user\u0027s metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-250"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1905089",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905089"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "(,12.0.0)",
          "affected_versions": "All versions before 12.0.0",
          "cvss_v2": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-250",
            "CWE-937"
          ],
          "date": "2021-06-04",
          "description": "A flaw was found in Keycloak where it is possible to update the user\u0027s metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.",
          "fixed_versions": [
            "12.0.0"
          ],
          "identifier": "CVE-2020-27826",
          "identifiers": [
            "CVE-2020-27826"
          ],
          "not_impacted": "All versions starting from 12.0.0",
          "package_slug": "maven/org.keycloak/keycloak-core",
          "pubdate": "2021-05-28",
          "solution": "Upgrade to version 12.0.0 or above.",
          "title": "Execution with Unnecessary Privileges",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-27826",
            "https://bugzilla.redhat.com/show_bug.cgi?id=1905089"
          ],
          "uuid": "406aed48-640c-4d42-b698-90b589995c54"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "12.0.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:redhat:single_sign-on:-:*:*:*:text-only:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:redhat:single_sign-on:7.4:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:redhat:single_sign-on:7.4.4:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2020-27826"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user\u0027s metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-250"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1905089",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Vendor Advisory"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905089"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 4.9,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 6.8,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 1.6,
          "impactScore": 2.5
        }
      },
      "lastModifiedDate": "2021-06-04T16:50Z",
      "publishedDate": "2021-05-28T11:15Z"
    }
  }
}


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