Falhas do tipo CWE-434

3.083 resultados

Upload irrestrito de arquivo com tipo perigoso

A aplicação aceita upload de arquivos sem validar adequadamente o tipo ou extensão, permitindo que um atacante envie executáveis, scripts ou outros arquivos maliciosos que serão armazenados ou executados no servidor. O risco aumenta se o arquivo for salvo em diretório acessível pela web ou em local onde será processado automaticamente.

Exemplo

Um sistema de upload de 'fotos de perfil' verifica apenas o tamanho do arquivo, mas não valida a extensão. Um atacante envia um arquivo .php disfarçado de imagem; se salvo em /uploads/ acessível via web, ele consegue executar código PHP no servidor ao acessar a URL direta.

Como mitigar

Valide extensões contra uma lista branca (whitelist) de tipos permitidos, verifique a assinatura do arquivo (magic bytes) e não confie apenas no Content-Type do cliente. Armazene uploads fora do diretório web ou configure o servidor para não executar scripts no diretório de uploads.

CVE-2022-41383CRITICALThe d8s-archives package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The bacEPSS 1.3%CVE-2022-42044CRITICALThe d8s-asns package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The backdooEPSS 1.3%CVE-2022-41380CRITICALThe d8s-yaml package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The backdooEPSS 1.3%CVE-2022-41381CRITICALThe d8s-utility package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The backEPSS 1.3%CVE-2022-42043CRITICALThe d8s-xml package for Python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The backdoorEPSS 1.3%CVE-2020-36863HIGHNagios XI < 5.7.2 Unrestricted File Upload via Audio Import DirectoryEPSS 1.3%CVE-2024-6823HIGHMedia Library Assistant <= 3.18 - Authenticated (Author+) Arbitrary File Upload via mla-inline-edit-upload-scripts AJAX ActionEPSS 1.3%CVE-2024-1205HIGHManagement App for WooCommerce – Order notifications, Order management, Lead management, Uptime Monitoring <= 1.2.2 - Authenticated (Subscriber+) Arbitrary File UploadEPSS 1.3%CVE-2023-2245MEDIUMhansunCMS unrestricted uploadEPSS 1.3%CVE-2013-10054CRITICALLibrettoCMS File Manager Arbitrary File UploadEPSS 1.3%CVE-2024-13723HIGHCheckmk NagVis Remote Code ExecutionEPSS 1.3%CVE-2024-14037CRITICALRedsea Cloud eHR Unauthenticated File Upload RCE via PtFjk.mobEPSS 1.3%CVE-2024-1986HIGHElite Booster for WooCommerce <= 7.1.7 - Authenticated (Subscriber+) Arbitrary File UploadEPSS 1.3%CVE-2024-29514HIGHFile Upload vulnerability in lepton v.7.1.0 allows a remote authenticated attackers to execute arbitrary code via uploading a crafted PHP fiEPSS 1.3%CVE-2023-27168CRITICALAn arbitrary file upload vulnerability in Xpand IT Write-back Manager v2.3.1 allows attackers to execute arbitrary code via a crafted jsp fiEPSS 1.3%CVE-2025-7437CRITICALEbook Store <= 5.8012 - Unauthenticated Arbitrary File UploadEPSS 1.3%CVE-2023-6636HIGHGreenshift – animation and page builder blocks <= 7.6.2 - Authenticated (Administrator+) Arbitrary File UploadEPSS 1.3%CVE-2023-6826HIGHE2Pdf <= 1.20.25 - Authenticated (Administrator+) Arbitrary File UploadEPSS 1.3%CVE-2025-28915CRITICALWordPress ThemeEgg ToolKit plugin <= 1.2.9 - Arbitrary File Upload vulnerabilityEPSS 1.3%CVE-2022-34154HIGHWordPress Enable SVG, WebP & ICO Upload plugin <= 1.0.1 - Authenticated Arbitrary File Upload vulnerabilityEPSS 1.3%