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-2022-31778—Transfer-Encoding not treated as hop-by-hopEPSS 2.1%CVE-2020-28221—A CWE-20: Improper Input Validation vulnerability exists in EcoStruxure™ Operator Terminal Expert and Pro-face BLUE (version details in the EPSS 2.1%CVE-2019-1760MEDIUMCisco IOS XE Software Performance Routing Version 3 Denial of Service VulnerabilityEPSS 2.1%CVE-2022-31121HIGHImproper Input Validation in fabric hyperledgerEPSS 2.1%CVE-2017-12328—A vulnerability in Session Initiation Protocol (SIP) call handling in Cisco IP Phone 8800 Series devices could allow an unauthenticated, remEPSS 2.1%CVE-2019-18995MEDIUMABB PB610 HMISimulator does not check content-length of the HTTP requestEPSS 2.1%CVE-2017-12217—A vulnerability in the General Packet Radio Service (GPRS) Tunneling Protocol ingress packet handler of Cisco ASR 5500 System Architecture EEPSS 2.1%CVE-2021-1404HIGHClam AntiVirus (ClamAV) Email Parser Denial of Service VulnerabilityEPSS 2.1%CVE-2021-28170—In the Jakarta Expression Language implementation 3.0.3 and earlier, a bug in the ELParserTokenManager enables invalid EL expressions to be EPSS 2.1%CVE-2023-46851—Apache Allura: sensitive information exposure via importEPSS 2.1%CVE-2025-21350MEDIUMWindows Kerberos Denial of Service VulnerabilityEPSS 2.1%CVE-2018-15413—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15414—Cisco Webex Network Recording Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15415—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15420—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15408—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15417—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15416—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2018-15412—Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution VulnerabilitiesEPSS 2.1%CVE-2024-6089HIGHRockwell Automation Major nonrecoverable fault in 5015 – AENFTXTEPSS 2.1%