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-2019-1888HIGHCisco Unified Contact Center Express Privilege Escalation VulnerabilityEPSS 3.4%CVE-2024-52302HIGHcommon-user-management Unrestricted File Upload Leading to Remote Code Execution (RCE)EPSS 3.4%CVE-2024-48594HIGHFile Upload vulnerability in Prison Management System v.1.0 allows a remote attacker to execute arbitrary code via the file upload componentEPSS 3.4%CVE-2022-2297MEDIUMSourceCodester Clinics Patient Management System unrestricted uploadEPSS 3.4%CVE-2016-9492—PHP forms generated using the PHP FormMail Generator are vulnerable to unrestricted upload of dangerous file typesEPSS 3.3%CVE-2026-85097CRITICALBricksforge <= 3.1.8.9 - Unauthenticated Arbitrary File Upload via 'temporaryFileUploads' ParameterEPSS 3.3%CVE-2026-24897CRITICALAuthenticated Remote Code Execution via Arbitrary File UploadEPSS 3.3%CVE-2026-22241HIGHOpen eClass has Unrestricted File Upload that Leads to Remote Code Execution (RCE)EPSS 3.3%CVE-2026-19089CRITICALProduct Input Fields for WooCommerce < 2.0.2 - Unauthenticated Arbitrary File UploadEPSS 3.2%CVE-2017-16772—Improper input validation vulnerability in SYNOPHOTO_Flickr_MultiUpload in Synology Photo Station before 6.8.3-3463 and before 6.3-2971 alloEPSS 3.2%CVE-2024-23946MEDIUMApache OFBiz: Path traversal or file inclusionEPSS 3.1%CVE-2026-4883CRITICALPiotnet Forms <= 2.1.40 - Unauthenticated Arbitrary File Upload via Form File UploadEPSS 3.1%CVE-2022-44289HIGHThinkphp 5.1.41 and 5.0.24 has a code logic error which causes file upload getshell.EPSS 3.0%CVE-2021-24240—Business Hours Pro <= 5.5.0 - Unauthenticated Arbitrary File Upload to RCEEPSS 3.0%CVE-2024-36858CRITICALAn arbitrary file upload vulnerability in the /v1/app/writeFileSync interface of Jan v0.4.12 allows attackers to execute arbitrary code via EPSS 3.0%CVE-2021-40905HIGHThe web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does not properly sanitise the uploading of ".mkp" fileEPSS 3.0%CVE-2024-4963MEDIUMD-Link DAR-7000-40 url.php unrestricted uploadEPSS 3.0%CVE-2024-26503CRITICALUnrestricted File Upload vulnerability in Greek Universities Network Open eClass v.3.15 and earlier allows attackers to run arbitrary code vEPSS 3.0%CVE-2013-10034CRITICALKaseya < 6.3.0.2 uploadImage.asp Arbitrary File Upload RCEEPSS 3.0%CVE-2021-42133—An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service tEPSS 2.9%