Fallos del tipo CWE-20

5887 resultados

Validação inadequada de entrada

A aplicação recebe dados de fontes externas (usuário, API, arquivo) sem verificar se estão no formato, tamanho ou tipo esperado antes de usá-los. Isso permite que um atacante envie dados malformados ou maliciosos que podem causar erros, corrupção de dados, execução de código ou acesso não autorizado.

Ejemplo

Um formulário que aceita um número de idade sem validar se é um inteiro positivo entre 0 e 150. Um atacante envia idade=-5 ou idade='DROP TABLE users;' via SQL, e o código processa isso diretamente no banco sem sanitização, causando dano.

Cómo mitigar

Valide TODA entrada externa: verificar tipo, tamanho, formato e intervalo permitido antes de usar. Use whitelists (aceitar apenas valores conhecidos como seguros) em vez de blacklists, e aplique sanitização ou prepared statements para dados que vão em queries. Testes de entrada fuzzing também ajudam a encontrar gaps.

CVE-2022-42012MEDIUMAn issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2. An authenticated attacker can caEPSS 1.8%CVE-2023-35365CRITICALWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.8%CVE-2020-3309MEDIUMCisco Firepower Device Manager On-Box Software Arbitrary File Overwrite VulnerabilityEPSS 1.8%CVE-2025-47171MEDIUMMicrosoft Outlook Remote Code Execution VulnerabilityEPSS 1.8%CVE-2026-54402CRITICALA malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in UniFi OS tEPSS 1.8%CVE-2020-3471MEDIUMCisco Webex Meetings and Cisco Webex Meetings Server Unauthorized Audio Information Exposure VulnerabilityEPSS 1.8%CVE-2020-27125HIGHCisco Security Manager Static Credential VulnerabilityEPSS 1.8%CVE-2024-30054MEDIUMMicrosoft Power BI Client JavaScript SDK Information Disclosure VulnerabilityEPSS 1.7%CVE-2020-3302MEDIUMCisco Firepower Management Center File Overwrite VulnerabilityEPSS 1.7%CVE-2022-46372HIGHAlotcer - AR7088H-A Authenticated Command executionEPSS 1.7%CVE-2019-15288HIGHCisco TelePresence Collaboration Endpoint, TelePresence Codec, and RoomOS Software Privilege Escalation VulnerabilityEPSS 1.7%CVE-2018-12479MEDIUMRequest controller allows to create requests with arbitrary request IDsEPSS 1.7%CVE-2020-3170MEDIUMCisco NX-OS Software NX-API Denial of Service VulnerabilityEPSS 1.7%CVE-2018-15449MEDIUMCisco Video Surveillance Media Server Denial of Service VulnerabilityEPSS 1.7%CVE-2024-3646HIGHCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Management ConsoleEPSS 1.7%CVE-2018-0117—A vulnerability in the ingress packet processing functionality of the Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software cEPSS 1.7%CVE-2020-3496MEDIUMCisco Small Business Smart and Managed Switches Denial of Service VulnerabilityEPSS 1.7%CVE-2023-21816HIGHWindows Active Directory Domain Services API Denial of Service VulnerabilityEPSS 1.7%CVE-2017-12215—A vulnerability in the email message filtering feature of Cisco AsyncOS Software for the Cisco Email Security Appliance could allow an unautEPSS 1.7%CVE-2017-9022HIGHThe gmp plugin in strongSwan before 5.5.3 does not properly validate RSA public keys before calling mpz_powm_sec, which allows remote peers EPSS 1.7%