CVE-2025-55581

{"id": "CVE-2025-55581", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 1.8}]}, "published": "2025-08-22T18:15:35.857", "references": [{"url": "https://cybermaya.in/posts/Post-42/", "source": "cve@mitre.org"}, {"url": "https://legacy.us.dlink.com/pages/product.aspx?id=f9c0458bfe7b4ff3bf7fad1cf6fcc9a1", "source": "cve@mitre.org"}, {"url": "https://www.dlink.com/en/security-bulletin/", "source": "cve@mitre.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-306"}, {"lang": "en", "value": "CWE-494"}]}], "descriptions": [{"lang": "en", "value": "D-Link DCS-825L firmware version 1.08.01 and possibly prior versions contain an insecure implementation in the mydlink-watch-dog.sh script. The script monitors and respawns the `dcp` and `signalc` binaries without validating their integrity, origin, or permissions. An attacker with filesystem access (e.g., via UART or firmware modification) may replace these binaries to achieve persistent arbitrary code execution with root privileges. The issue stems from improper handling of executable trust and absence of integrity checks in the watchdog logic."}, {"lang": "es", "value": "La versi\u00f3n de firmware 1.08.01 de la D-Link DCS-825L y posiblemente versiones anteriores contienen una implementaci\u00f3n insegura en el script mydlink-watch-dog.sh. Este script monitoriza y regenera los binarios `dcp` y `signalc` sin validar su integridad, origen ni permisos. Un atacante con acceso al sistema de archivos (por ejemplo, mediante UART o modificaci\u00f3n del firmware) podr\u00eda reemplazar estos binarios para ejecutar c\u00f3digo arbitrario de forma persistente con privilegios de root. El problema se debe a una gesti\u00f3n incorrecta de la confianza de los ejecutables y a la ausencia de comprobaciones de integridad en la l\u00f3gica del watchdog."}], "lastModified": "2025-08-25T20:24:45.327", "sourceIdentifier": "cve@mitre.org"}