CVE-2025-66263

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Mozart FM Transmitter versions 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000 allows an attacker to perform Null byte injection in download_setting.php allows reading arbitrary files.\nThe `/var/tdf/download_setting.php` endpoint constructs file paths by concatenating user-controlled `$_GET['filename']` with a forced `.tgz` extension. Running on PHP 5.3.2 (pre-5.3.4), the application is vulnerable to null byte injection (%00), allowing attackers to bypass the extension restriction and traverse paths. By requesting `filename=../../../../etc/passwd%00`, the underlying C functions treat the null byte as a string terminator, ignoring the appended `.tgz` and enabling unauthenticated arbitrary file disclosure of any file readable by the web server user."}, {"lang": "es", "value": "Lectura de archivos arbitrarios no autenticada mediante inyecci\u00f3n de byte nulo en las versiones 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000 del transmisor FM Mozart de DB Electronica Telecomunicazioni S.p.A. permite a un atacante realizar una inyecci\u00f3n de byte nulo en 'download_setting.php', lo que permite la lectura de archivos arbitrarios.\nEl endpoint '/var/tdf/download_setting.php' construye rutas de archivo concatenando 'par\u00e1metro 'filename'' controlado por el usuario con una extensi\u00f3n '.tgz' forzada. Ejecut\u00e1ndose en PHP 5.3.2 (anterior a la 5.3.4), la aplicaci\u00f3n es vulnerable a la inyecci\u00f3n de byte nulo (%00), lo que permite a los atacantes eludir la restricci\u00f3n de extensi\u00f3n y recorrer rutas. Al solicitar 'filename=.. / .. / .. / ../etc/p4ssd%00', las funciones C subyacentes tratan el byte nulo como un terminador de cadena, ignorando la extensi\u00f3n '.tgz' adjunta y permitiendo la divulgaci\u00f3n de archivos arbitrarios no autenticada de cualquier archivo legible por el usuario del servidor web."}], "id": "CVE-2025-66263", "lastModified": "2026-10-19T13:10:00.110", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.9, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-66263", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-11-26T16:10:10.243107Z", "version": "2.0.3"}}]}, "published": "2025-11-26T01:16:09.880", "references": [{"source": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.abdulmhsblog.com/posts/webfmvulns/"}], "sourceIdentifier": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-158"}], "source": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "type": "Secondary"}]}

{}

{"created": "2025-11-27T16:26:45.199030+00:00", "updated": "2025-11-27T16:26:45.199055+00:00", "vendors": ["dbbroadcast", "dbbroadcast$PRODUCT$mozart_fm_transmitter"]}