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-2024-1253MEDIUMByzoro Smart S40 Management Platform Import web.php unrestricted uploadEPSS 1.7%CVE-2023-3342CRITICALUser Registration <= 3.0.2 - Authenticated (Subscriber+) Arbitrary File UploadEPSS 1.7%CVE-2005-0254LOWBibORB 1.3.2, and possibly earlier versions, does not properly enforce a restriction for uploading only PDF and PS files, which allows remotEPSS 1.7%CVE-2022-27862CRITICALWordPress VikBooking Hotel Booking Engine & PMS plugin <= 1.5.3 - Arbitrary File Upload leading to RCEEPSS 1.7%CVE-2023-5636CRITICALMalicious File Upload in ArslanSoft's Education PortalEPSS 1.7%CVE-2022-1008—One Click Demo Import < 3.1.0 - Admin+ Arbitrary File UploadEPSS 1.7%CVE-2022-41711CRITICALBadaso version 2.6.0 allows an unauthenticated remote attacker to execute arbitrary code remotely on the server. This is possible because thEPSS 1.7%CVE-2021-24252—Event Banner <= 1.3 - Arbitrary File Upload to RCEEPSS 1.7%CVE-2023-26262HIGHAn issue was discovered in Sitecore XP/XM 10.3. As an authenticated Sitecore user, a unrestricted language file upload vulnerability exists EPSS 1.7%CVE-2022-38887CRITICALThe d8s-python for python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. The democritus-stEPSS 1.7%CVE-2024-9659CRITICALSchool Management <= 91.5.0 - Unauthenticated Arbitrary File UploadEPSS 1.7%CVE-2022-36066CRITICALDiscourse vulnerable to RCE via admins uploading maliciously zipped fileEPSS 1.7%CVE-2021-35002HIGHBMC Track-It! Unrestricted File Upload Remote Code Execution VulnerabilityEPSS 1.7%CVE-2021-24123—PowerPress < 8.3.8 - Authenticated Arbitrary File Upload leading to RCEEPSS 1.6%CVE-2025-7340CRITICALHT Contact Form Widget For Elementor Page Builder & Gutenberg Blocks & Form Builder. <= 2.2.1 - Unauthenticated Arbitrary File UploadEPSS 1.6%CVE-2021-21355HIGHUnrestricted File Upload in Form FrameworkEPSS 1.6%CVE-2022-40037CRITICALAn issue discovered in Rawchen blog-ssm v1.0 allows remote attacker to escalate privileges and execute arbitrary commands via the component EPSS 1.6%CVE-2025-59118HIGHApache OFBiz: Critical Remote Command Execution via Unrestricted File UploadEPSS 1.6%CVE-2024-31351CRITICALWordPress Copymatic plugin <= 1.6 - Unauthenticated Arbitrary File Upload vulnerabilityEPSS 1.6%CVE-2021-4382HIGHRecently <= 3.0.4 - Arbitrary File Upload to Remote Code ExectutionEPSS 1.6%