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-2021-3572—A flaw was found in python-pip in the way it handled Unicode separators in git references. A remote attacker could possibly use this issue tEPSS 1.8%CVE-2020-36195CRITICALSQL Injection Vulnerability in Multimedia Console and the Media Streaming Add-OnEPSS 1.8%CVE-2023-25692HIGHApache Airflow Google Provider: Google Cloud Sql Provider Denial Of ServiceEPSS 1.8%CVE-2020-3398HIGHCisco NX-OS Software Border Gateway Protocol Multicast VPN Session Denial of Service VulnerabilityEPSS 1.8%CVE-2019-12656HIGHCisco IOx Application Environment Denial of Service VulnerabilityEPSS 1.8%CVE-2026-44343CRITICALWGDashboard: Critical Vulnerability in 4.3.2EPSS 1.8%CVE-2022-35724—Denial of service while reading data in Avro Rust SDKEPSS 1.8%CVE-2021-21321CRITICALPrefix escapeEPSS 1.8%CVE-2019-1676MEDIUMCisco Meeting Server SIP Processing Denial of Service VulnerabilityEPSS 1.8%CVE-2020-3363HIGHCisco Small Business Smart and Managed Switches Denial of Service VulnerabilityEPSS 1.8%CVE-2024-43611HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.8%CVE-2021-3673—A vulnerability was found in Radare2 in version 5.3.1. Improper input validation when reading a crafted LE binary can lead to resource exhauEPSS 1.8%CVE-2025-24446CRITICALColdFusion | Improper Input Validation (CWE-20)EPSS 1.8%CVE-2020-3397HIGHCisco NX-OS Software Border Gateway Protocol Multicast VPN Denial of Service VulnerabilityEPSS 1.8%CVE-2020-3425HIGHCisco IOS XE Software Privilege Escalation VulnerabilitiesEPSS 1.8%CVE-2019-1785CRITICALClam AntiVirus RAR Directory Traversal VulnerabilityEPSS 1.8%CVE-2021-44394HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%CVE-2021-44356HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%CVE-2021-44366HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%CVE-2021-44354HIGHMultiple denial of service vulnerabilities exist in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121EPSS 1.8%