CVE-2025-69203

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Versions prior to 2.19.0 of the access request system have two related features that when combined by themselves and with an information disclosure vulnerability enable convincing social engineering attacks against administrators. When a device creates an access request, it specifies three fields: `clientId`, `description`, and `permissions`. The SignalK admin UI displays the `description` field prominently to the administrator when showing pending requests, but the actual `permissions` field (which determines the access level granted) is less visible or displayed separately. This allows an attacker to request `admin` permissions while providing a description that suggests readonly access. The access request handler trusts the `X-Forwarded-For` HTTP header without validation to determine the client's IP address. This header is intended to preserve the original client IP when requests pass through reverse proxies, but when trusted unconditionally, it allows attackers to spoof their IP address. The spoofed IP is displayed to administrators in the access request approval interface, potentially making malicious requests appear to originate from trusted internal network addresses. Since device/source names can be enumerated via the information disclosure vulnerability, an attacker can impersonate a legitimate device or source, craft a convincing description, spoof a trusted internal IP address, and request elevated permissions, creating a highly convincing social engineering scenario that increases the likelihood of administrator approval. Users should upgrade to version 2.19.0 to fix this issue."}, {"lang": "es", "value": "Signal K Server es una aplicaci\u00f3n de servidor que se ejecuta en un concentrador central en un barco. Las versiones anteriores a la 2.19.0 del sistema de solicitud de acceso tienen dos caracter\u00edsticas relacionadas que, cuando se combinan por s\u00ed mismas y con una vulnerabilidad de revelaci\u00f3n de informaci\u00f3n, permiten ataques convincentes de ingenier\u00eda social contra los administradores. Cuando un dispositivo crea una solicitud de acceso, especifica tres campos: 'clientId', 'description' y 'permissions'. La interfaz de usuario de administraci\u00f3n de SignalK muestra el campo 'description' de forma destacada al administrador al mostrar las solicitudes pendientes, pero el campo real 'permissions' (que determina el nivel de acceso concedido) es menos visible o se muestra por separado. Esto permite a un atacante solicitar permisos de 'admin' mientras proporciona una descripci\u00f3n que sugiere acceso de solo lectura. El manejador de solicitudes de acceso conf\u00eda en el encabezado HTTP 'X-Forwarded-For' sin validaci\u00f3n para determinar la direcci\u00f3n IP del cliente. Este encabezado est\u00e1 destinado a preservar la IP original del cliente cuando las solicitudes pasan a trav\u00e9s de proxies inversos, pero cuando se conf\u00eda incondicionalmente en \u00e9l, permite a los atacantes falsificar su direcci\u00f3n IP. La IP falsificada se muestra a los administradores en la interfaz de aprobaci\u00f3n de solicitudes de acceso, lo que potencialmente hace que las solicitudes maliciosas parezcan originarse de direcciones de red internas de confianza. Dado que los nombres de dispositivos/fuentes pueden enumerarse a trav\u00e9s de la vulnerabilidad de revelaci\u00f3n de informaci\u00f3n, un atacante puede suplantar un dispositivo o fuente leg\u00edtima, elaborar una descripci\u00f3n convincente, falsificar una direcci\u00f3n IP interna de confianza y solicitar permisos elevados, creando un escenario de ingenier\u00eda social altamente convincente que aumenta la probabilidad de aprobaci\u00f3n del administrador. Los usuarios deben actualizar a la versi\u00f3n 2.19.0 para solucionar este problema."}], "id": "CVE-2025-69203", "lastModified": "2026-10-07T11:10:00.153", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-69203", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-02T19:02:06.451579Z", "version": "2.0.3"}}]}, "published": "2026-01-01T19:15:54.067", "references": [{"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/SignalK/signalk-server/releases/tag/v2.19.0"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-vfrf-vcj7-wvr8"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"created": "2026-01-05T10:14:48.115931+00:00", "updated": "2026-01-05T10:14:48.116020+00:00", "vendors": ["signalk", "signalk$PRODUCT$signalk-server"]}