FKIE_CVE-2023-6927

Vulnerability from fkie_nvd - Published: 2023-12-18 23:15 - Updated: 2026-06-17 06:51
Severity
4.6 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0094
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0095
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0096
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0097
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0098
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0100
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0101
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0798
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0799
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0800
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0801
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:0804
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2023-6927Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2255027Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0094
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0095
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0096
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0097
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0098
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0100
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0101
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0798
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0799
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0800
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0801
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0804
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-6927Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2255027Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
redhat keycloak -
redhat single_sign-on 7.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "cpes": [
            "cpe:/a:redhat:build_keycloak:22::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "rhbk/keycloak-rhel9",
          "product": "Red Hat build of Keycloak 22",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "22-7",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:build_keycloak:22"
          ],
          "defaultStatus": "unaffected",
          "packageName": "keycloak-core",
          "product": "Red Hat build of Keycloak 22.0.8",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7.6"
          ],
          "defaultStatus": "unaffected",
          "packageName": "rh-sso7-keycloak",
          "product": "Red Hat Single Sign-On 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7.6::el7"
          ],
          "defaultStatus": "affected",
          "packageName": "rh-sso7-keycloak",
          "product": "Red Hat Single Sign-On 7.6 for RHEL 7",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:18.0.11-3.redhat_00001.1.el7sso",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7.6::el7"
          ],
          "defaultStatus": "affected",
          "packageName": "rh-sso7-keycloak",
          "product": "Red Hat Single Sign-On 7.6 for RHEL 7",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:18.0.12-1.redhat_00001.1.el7sso",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7.6::el8"
          ],
          "defaultStatus": "affected",
          "packageName": "rh-sso7-keycloak",
          "product": "Red Hat Single Sign-On 7.6 for RHEL 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:18.0.11-3.redhat_00001.1.el8sso",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7.6::el8"
          ],
          "defaultStatus": "affected",
          "packageName": "rh-sso7-keycloak",
          "product": "Red Hat Single Sign-On 7.6 for RHEL 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:18.0.12-1.redhat_00001.1.el8sso",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7.6::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "rh-sso7-keycloak",
          "product": "Red Hat Single Sign-On 7.6 for RHEL 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:18.0.11-3.redhat_00001.1.el9sso",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7.6::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "rh-sso7-keycloak",
          "product": "Red Hat Single Sign-On 7.6 for RHEL 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:18.0.12-1.redhat_00001.1.el9sso",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "cpes": [
            "cpe:/a:redhat:rhosemc:1.0::el8"
          ],
          "defaultStatus": "affected",
          "packageName": "rh-sso-7/sso76-openshift-rhel8",
          "product": "RHEL-8 based Middleware Containers",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "7.6-39",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "cpes": [
            "cpe:/a:redhat:rhosemc:1.0::el8"
          ],
          "defaultStatus": "affected",
          "packageName": "rh-sso-7/sso76-openshift-rhel8",
          "product": "RHEL-8 based Middleware Containers",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "7.6-41",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7.6.6"
          ],
          "defaultStatus": "unaffected",
          "packageName": "rh-sso7-keycloak",
          "product": "Single Sign-On 7.6.6",
          "vendor": "Red Hat"
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:redhat:keycloak:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "6E0DE4E1-5D8D-40F3-8AC8-C7F736966158",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "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. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode \"form_post.jwt\" which could be used to bypass the security patch implemented to address CVE-2023-6134."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una falla en Keycloak. Este problema puede permitir que un atacante robe c\u00f3digos de autorizaci\u00f3n o tokens de clientes usando un comod\u00edn en el modo de respuesta JARM \"form_post.jwt\" que podr\u00eda usarse para eludir el parche de seguridad implementado para abordar CVE-2023-6134."
    }
  ],
  "id": "CVE-2023-6927",
  "lastModified": "2026-06-17T06:51:41.953",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 2.5,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2023-12-18T23:15:10.027",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0094"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0095"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0096"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0097"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0098"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0100"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0101"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0798"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0799"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0800"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0801"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:0804"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/security/cve/CVE-2023-6927"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255027"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0094"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0095"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0096"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0097"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0098"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0100"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0101"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0798"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0799"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0800"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0801"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://access.redhat.com/errata/RHSA-2024:0804"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://access.redhat.com/security/cve/CVE-2023-6927"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255027"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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.


Detection rules are retrieved from Rulezet.