Falhas do tipo CWE-20

5.887 resultados

Validação inadequada de entrada

A aplicação recebe dados do usuário ou de fontes externas mas não valida (ou valida mal) se esses dados têm as propriedades necessárias para processamento seguro. Isso abre porta para injeção de código, buffer overflow, lógica corrompida e outros ataques que exploram dados malformados ou maliciosos.

Exemplo

Um formulário web aceita um CPF sem verificar se tem 11 dígitos numéricos, ou um app móvel recebe um ID de usuário em JSON sem confirmar se é um inteiro — atacantes exploram isso para acessar dados de outros usuários, executar queries SQL maliciosas ou causar erro de processamento.

Como mitigar

Implemente validação rigorosa na entrada: verifique tipo, comprimento, formato, intervalo de valores permitidos. Use whitelist (aceitar só o que você sabe ser seguro) em vez de blacklist. Valide tanto no cliente quanto no servidor, e use bibliotecas de parsing seguro para formatos complexos (XML, JSON).

CVE-2021-44357HIGHMultiple 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-2021-44375HIGHMultiple 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-2021-44355HIGHMultiple 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-2021-1506CRITICALCisco SD-WAN vManage Software VulnerabilitiesEPSS 1.8%CVE-2021-32759HIGHData Flow Sanitation Issue FixEPSS 1.8%CVE-2020-15099HIGHExposure of Sensitive Information to an Unauthorized Actor in TYPO3 CMSEPSS 1.8%CVE-2020-3521MEDIUMCisco Data Center Network Manager Read File Path Traversal VulnerabilityEPSS 1.8%CVE-2021-36038MEDIUMMagento Commerce Multishipping Module Improper Input Validation Could Lead To Information ExposureEPSS 1.8%CVE-2022-36087MEDIUMOAuthLib vulnerable DoS when attacker provides malicious IPV6 URIEPSS 1.8%CVE-2022-39281MEDIUMRemote Denial of Service via Tasks endpoint in fat_free_crmEPSS 1.8%CVE-2023-28731CRITICALUnauthenticated RCE affecting the AcyMailing plugin for JoomlaEPSS 1.8%CVE-2020-3141HIGHCisco IOS XE Software Privilege Escalation VulnerabilitiesEPSS 1.8%CVE-2018-20225HIGHAn issue was discovered in pip (all versions) because it installs the version with the highest version number, even if the user had intendedEPSS 1.8%CVE-2019-12663MEDIUMCisco IOS XE Software TrustSec Protected Access Credential Provisioning Denial of Service VulnerabilityEPSS 1.8%CVE-2021-1302HIGHCisco SD-WAN vManage Authorization Bypass VulnerabilitiesEPSS 1.8%CVE-2018-0355—A vulnerability in the web UI of Cisco Unified Communications Manager (Unified CM) could allow an unauthenticated, remote attacker to conducEPSS 1.8%CVE-2014-2345—COPA-DATA zenon DNP3 Improper Input ValidationEPSS 1.8%CVE-2019-1891HIGHCisco Small Business Series Switches HTTP Denial of Service VulnerabilityEPSS 1.8%CVE-2019-1817HIGHCisco Web Security Appliance Malformed Request Denial of Service VulnerabilityEPSS 1.8%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%