Fallos del tipo CWE-434

3255 resultados

Upload irrestrito de arquivo com tipo perigoso

Ocorre quando a aplicação aceita upload de arquivos sem validar adequadamente o tipo ou extensão, permitindo que um atacante envie executáveis, scripts ou outros arquivos maliciosos. O risco é grave: o arquivo pode ser armazenado em local acessível pela web, executado pelo servidor, ou baixado e executado pela vítima.

Ejemplo

Um formulário de perfil aceita qualquer arquivo como 'foto', sem verificação. Alguém faz upload de um .exe ou .php; se salvo em pasta pública e com permissões erradas, o arquivo pode ser executado pelo servidor ou baixado por outros usuários.

Cómo mitigar

Valide a extensão e o tipo MIME no servidor (nunca apenas no cliente), rejeite extensões perigosas explicitamente, armazene uploads fora da raiz web ou sem permissão de execução, e considere renomear arquivos removendo extensão original. Idealmente, converta imagens para formatos seguros (PNG/JPG) após upload.

CVE-2021-41178HIGHFile Traversal affecting SVG files on Nextcloud ServerEPSS 1.8%CVE-2023-28731CRITICALUnauthenticated RCE affecting the AcyMailing plugin for JoomlaEPSS 1.8%CVE-2021-24311—External Media < 1.0.34 - Authenticated Arbitrary File UploadEPSS 1.8%CVE-2024-9698HIGHCrafthemes Demo Import <= 3.3 - Authenticated (Admin+) Arbitrary File Upload in process_uploaded_filesEPSS 1.8%CVE-2022-41437HIGHBilling System Project v1.0 was discovered to contain a remote code execution (RCE) vulnerability via the component /php_action/createProducEPSS 1.8%CVE-2021-27459—A vulnerability has been found in multiple revisions of Emerson Rosemount X-STREAM Gas Analyzer. The webserver of the affected products alloEPSS 1.8%CVE-2025-7340CRITICALHT Contact Form Widget For Elementor Page Builder & Gutenberg Blocks & Form Builder. <= 2.2.1 - Unauthenticated Arbitrary File UploadEPSS 1.8%CVE-2023-6449MEDIUMContact Form 7 <= 5.8.3 - Authenticated (Editor+) Arbitrary File UploadEPSS 1.8%CVE-2020-14488HIGHOpenClinic GAEPSS 1.7%CVE-2024-13986HIGHNagios XI < 2024R1.3.2 Authenticated Arbitrary File Upload Path Traversal RCEEPSS 1.7%CVE-2021-29092HIGHUnrestricted upload of file with dangerous type vulnerability in file management component in Synology Photo Station before 6.8.14-3500 alloEPSS 1.7%CVE-2025-59118HIGHApache OFBiz: Critical Remote Command Execution via Unrestricted File UploadEPSS 1.7%CVE-2013-10055CRITICALHavalite CMS Arbitary File Upload RCEEPSS 1.7%CVE-2022-42038CRITICALThe d8s-ip-addresses package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. TheEPSS 1.7%CVE-2022-41382CRITICALThe d8s-json package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The backdooEPSS 1.7%CVE-2013-10047CRITICALMiniWeb <= Build 300 Arbitrary File UploadEPSS 1.7%CVE-2025-34097HIGHProcessMaker < 3.5.4 Authenticated Plugin Upload RCEEPSS 1.7%CVE-2013-10067CRITICALGlossword 1.8.8 - 1.8.12 Arbitrary File Upload RCEEPSS 1.7%CVE-2021-4225—SP Project & Document Manager < 4.24 - Subscriber+ Shell UploadEPSS 1.7%CVE-2021-24216—All-in-One WP Migration < 7.41 - Admin+ Arbitrary File Upload to RCEEPSS 1.7%