CVE-2025-34336

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The response MIME type used is also attacker-controlled when the file is served up to version < 4.1.2. Since version 4.1.2, it is possible to download any image uploaded with any whitelisted content type. But any file uploaded other than an image will be served with the `application/octet-stream` content type (the content type is no longer controlled by the attacker since version 4.1.2). This enables an unauthenticated attacker to use any affected application as a persistent file hosting service for arbitrary content under the application's origin. 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The framework then returns a download URL that can be used to retrieve the uploaded content, including an attacker-controlled Content-Type within the limits of the image upload functionality. While a filename extension whitelist is enforced, the attacker fully controls the file contents. The response MIME type used is also attacker-controlled when the file is served up to version < 4.1.2. Since version 4.1.2, it is possible to download any image uploaded with any whitelisted content type. But any file uploaded other than an image will be served with the `application/octet-stream` content type (the content type is no longer controlled by the attacker since version 4.1.2). This enables an unauthenticated attacker to use any affected application as a persistent file hosting service for arbitrary content under the application's origin. 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El tipo MIME de respuesta utilizado tambi\u00e9n es controlado por el atacante cuando el archivo se sirve hasta la versi\u00f3n anterior a 4.1.2. Desde la versi\u00f3n 4.1.2, es posible descargar cualquier imagen cargada con cualquier tipo de contenido en la lista blanca. Pero cualquier archivo cargado que no sea una imagen se servir\u00e1 con el tipo de contenido 'application/octet-stream' (el tipo de contenido ya no es controlado por el atacante desde la versi\u00f3n 4.1.2). Esto permite a un atacante no autenticado usar cualquier aplicaci\u00f3n afectada como un servicio de alojamiento de archivos persistente para contenido arbitrario bajo el origen de la aplicaci\u00f3n. KISA/KrCERT ha identificado esta vulnerabilidad no parcheada como 'KVE-2023-5280'."}], "id": "CVE-2025-34336", "lastModified": "2026-10-23T23:10:00.157", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "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": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/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": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-34336", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-11-19T16:41:07.519228Z", "version": "2.0.3"}}]}, "published": "2025-11-19T17:15:49.073", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/eGovFramework/egovframe-common-components"}, {"source": "disclosure@vulncheck.com", "url": "https://pierrekim.github.io/advisories/2025-egovframe.txt"}, {"source": "disclosure@vulncheck.com", "url": "https://pierrekim.github.io/blog/2025-11-20-egovframe-2-vulnerabilities.html"}, {"source": "disclosure@vulncheck.com", "url": "https://www.egovframe.go.kr/eng/sub.do?menuNo=2"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/egovframework-unauthenticated-file-upload-via-web-editor-image-upload-endpoints"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-434"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

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{"created": "2025-11-24T09:10:39.522233+00:00", "updated": "2025-11-24T09:10:39.522257+00:00", "vendors": ["egovframework", "egovframework$PRODUCT$egovframe-common-components"]}