CVE-2021-20262 (GCVE-0-2021-20262)

Vulnerability from cvelistv5 – Published: 2021-03-09 17:19 – Updated: 2024-08-03 17:37
VLAI
Summary
A flaw was found in Keycloak 12.0.0 where re-authentication does not occur while updating the password. This flaw allows an attacker to take over an account if they can obtain temporary, physical access to a user’s browser. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Severity
6.8 (Medium)
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a keycloak Affected: Keycloak 12.0.0
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:37:23.083Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1933639"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "keycloak",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Keycloak 12.0.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in Keycloak 12.0.0 where re-authentication does not occur while updating the password. This flaw allows an attacker to take over an account if they can obtain temporary, physical access to a user\u2019s browser. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-03-09T17:19:20.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1933639"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-20262",
    "datePublished": "2021-03-09T17:19:20.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:37:23.083Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-20262",
      "date": "2026-09-26",
      "epss": "0.00329",
      "percentile": "0.23426"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:redhat:keycloak:12.0.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "12CD4C8E-1AB9-4D25-9F59-169FB351DEE9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in Keycloak 12.0.0 where re-authentication does not occur while updating the password. This flaw allows an attacker to take over an account if they can obtain temporary, physical access to a user\u2019s browser. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability."
        },
        {
          "lang": "es",
          "value": "Se encontr\u00f3 un fallo en Keycloak versi\u00f3n 12.0.0, donde no ocurre la re-autenticaci\u00f3n mientras se actualiza la contrase\u00f1a.\u0026#xa0;Este fallo permite a un atacante apoderarse de una cuenta si puede obtener acceso f\u00edsico temporal al navegador de un usuario.\u0026#xa0;La mayor amenaza de esta vulnerabilidad es la confidencialidad, la integridad y la disponibilidad del sistema"
        }
      ],
      "id": "CVE-2021-20262",
      "lastModified": "2024-11-21T05:46:14.110",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "MEDIUM",
            "cvssData": {
              "accessComplexity": "LOW",
              "accessVector": "LOCAL",
              "authentication": "NONE",
              "availabilityImpact": "PARTIAL",
              "baseScore": 4.6,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "PARTIAL",
              "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
              "version": "2.0"
            },
            "exploitabilityScore": 3.9,
            "impactScore": 6.4,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ],
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "PHYSICAL",
              "availabilityImpact": "HIGH",
              "baseScore": 6.8,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            },
            "exploitabilityScore": 0.9,
            "impactScore": 5.9,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2021-03-09T18:15:15.407",
      "references": [
        {
          "source": "secalert@redhat.com",
          "tags": [
            "Issue Tracking",
            "Vendor Advisory"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1933639"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Issue Tracking",
            "Vendor Advisory"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1933639"
        }
      ],
      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-306"
            }
          ],
          "source": "secalert@redhat.com",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:redhat:keycloak:12.0.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "12CD4C8E-1AB9-4D25-9F59-169FB351DEE9",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A flaw was found in Keycloak 12.0.0 where re-authentication does not occur while updating the password. This flaw allows an attacker to take over an account if they can obtain temporary, physical access to a user\u2019s browser. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability."
          },
          {
            "lang": "es",
            "value": "Se encontr\u00f3 un fallo en Keycloak versi\u00f3n 12.0.0, donde no ocurre la re-autenticaci\u00f3n mientras se actualiza la contrase\u00f1a.\u0026#xa0;Este fallo permite a un atacante apoderarse de una cuenta si puede obtener acceso f\u00edsico temporal al navegador de un usuario.\u0026#xa0;La mayor amenaza de esta vulnerabilidad es la confidencialidad, la integridad y la disponibilidad del sistema"
          }
        ],
        "id": "CVE-2021-20262",
        "lastModified": "2024-11-21T05:46:14.110",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 4.6,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "PHYSICAL",
                "availabilityImpact": "HIGH",
                "baseScore": 6.8,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 0.9,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-03-09T18:15:15.407",
        "references": [
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Issue Tracking",
              "Vendor Advisory"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1933639"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Issue Tracking",
              "Vendor Advisory"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1933639"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-306"
              }
            ],
            "source": "secalert@redhat.com",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:42:40+00:00",
      "cve": "CVE-2021-20262",
      "id": "CVE-2021-20262",
      "initial_release_date": "2021-03-01T00:00:00+00:00",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "6",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "keycloak: missing re-authentication while updating password",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-20262.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.