CVE-2023-6787
Estado: AnalizadaAlta (8.8)—
A flaw was found in Keycloak that occurs from an error in the re-authentication mechanism within org.keycloak.authentication. This flaw allows hijacking an active Keycloak session by triggering a new authentication process with the query parameter "prompt=login," prompting the user to re-enter their credentials. If the user cancels this re-authentication by selecting "Restart login," an account takeover may occur, as the new session, with a different SUB, will possess the same SID as the previous session.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.74%
- Percentil entre todas las CVEs puntuadas: 53
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)
CWE
- CWE-287
- CWE-287
Referencias
- https://access.redhat.com/errata/RHSA-2024:1867
- https://access.redhat.com/errata/RHSA-2024:1868
- https://access.redhat.com/security/cve/CVE-2023-6787
- https://bugzilla.redhat.com/show_bug.cgi?id=2254375
- https://github.com/keycloak/keycloak/security/advisories/GHSA-c9h6-v78w-52wj
- https://access.redhat.com/errata/RHSA-2024:1867
- https://access.redhat.com/errata/RHSA-2024:1868
- https://access.redhat.com/security/cve/CVE-2023-6787
- https://bugzilla.redhat.com/show_bug.cgi?id=2254375
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-6787",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-6787",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-04-25T19:40:17.217959Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.5,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 2.8
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.8,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "secalert@redhat.com",
"affectedData": [
{
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "22.0.10",
"versionType": "semver"
},
{
"status": "affected",
"version": "0",
"lessThan": "24.0.3",
"versionType": "semver"
}
],
"packageName": "keycloak",
"collectionURL": "https://github.com/keycloak/keycloak"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:22::el9"
],
"vendor": "Red Hat",
"product": "Red Hat build of Keycloak 22",
"versions": [
{
"status": "unaffected",
"version": "22.0.10-1",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhbk/keycloak-operator-bundle",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:22::el9"
],
"vendor": "Red Hat",
"product": "Red Hat build of Keycloak 22",
"versions": [
{
"status": "unaffected",
"version": "22-13",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhbk/keycloak-rhel9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:22::el9"
],
"vendor": "Red Hat",
"product": "Red Hat build of Keycloak 22",
"versions": [
{
"status": "unaffected",
"version": "22-16",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhbk/keycloak-rhel9-operator",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:22"
],
"vendor": "Red Hat",
"product": "Red Hat build of Keycloak 22.0.10",
"packageName": "keycloak-core",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unaffected"
},
{
"cpes": [
"cpe:/a:redhat:red_hat_single_sign_on:7"
],
"vendor": "Red Hat",
"product": "Red Hat Single Sign-On 7",
"packageName": "rh-sso7-keycloak",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
}
]
}
],
"published": "2024-04-25T16:15:10.867",
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2024:1867",
"tags": [
"Vendor Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:1868",
"tags": [
"Vendor Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2023-6787",
"tags": [
"Vendor Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2254375",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://github.com/keycloak/keycloak/security/advisories/GHSA-c9h6-v78w-52wj",
"tags": [
"Vendor Advisory"
],
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:1867",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/errata/RHSA-2024:1868",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2023-6787",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2254375",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-287"
}
]
},
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"description": [
{
"lang": "en",
"value": "CWE-287"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Keycloak that occurs from an error in the re-authentication mechanism within org.keycloak.authentication. This flaw allows hijacking an active Keycloak session by triggering a new authentication process with the query parameter \"prompt=login,\" prompting the user to re-enter their credentials. If the user cancels this re-authentication by selecting \"Restart login,\" an account takeover may occur, as the new session, with a different SUB, will possess the same SID as the previous session."
},
{
"lang": "es",
"value": "Se encontró una falla en Keycloak que se produce por un error en el mecanismo de reautenticación dentro de org.keycloak.authentication. Esta falla permite secuestrar una sesión activa de Keycloak al activar un nuevo proceso de autenticación con el parámetro de consulta \"prompt=login\", solicitando al usuario que vuelva a ingresar sus credenciales. Si el usuario cancela esta reautenticación seleccionando \"Reiniciar inicio de sesión\", puede ocurrir una apropiación de la cuenta, ya que la nueva sesión, con un SUB diferente, poseerá el mismo SID que la sesión anterior."
}
],
"lastModified": "2026-06-17T06:51:25.630",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1830E455-7E11-4264-862D-05971A42D4A6"
},
{
"criteria": "cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4933958F-429C-4C29-A18E-82E96B095783",
"versionEndExcluding": "22.0.10"
},
{
"criteria": "cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6392BA3C-DA57-4640-BB46-C11E9EC3DAED",
"versionEndExcluding": "24.0.3",
"versionStartIncluding": "23.0.0"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secalert@redhat.com"
}