Falhas do tipo CWE-20

5.418 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-2023-35336MEDIUMWindows MSHTML Platform Security Feature Bypass VulnerabilityEPSS 0.9%CVE-2023-4698HIGHImproper Input Validation in usememos/memosEPSS 0.9%CVE-2023-38701CRITICALHydra's committed UTxOs at Commit validator and UTxOs at Initial validator can be spent arbitrarily by anyoneEPSS 0.9%CVE-2022-29479MEDIUMOn F5 BIG-IP 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior to 13.1.5, and all versions of 12.1EPSS 0.9%CVE-2022-36960HIGHSolarWinds Platform Improper Input ValidationEPSS 0.9%CVE-2022-46372HIGHAlotcer - AR7088H-A Authenticated Command executionEPSS 0.9%CVE-2023-20105CRITICALA vulnerability in the change password functionality of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) coulEPSS 0.9%CVE-2023-3894MEDIUMDOS in jackson-dataformats-textEPSS 0.9%CVE-2022-47188HIGHImproper Input Validation in Generex CS141EPSS 0.9%CVE-2021-43861HIGHIncorrect sanitisation function leads to `XSS`EPSS 0.9%CVE-2021-20302—A flaw was found in OpenEXR's TiledInputFile functionality. This flaw allows an attacker who can submit a crafted single-part non-image to bEPSS 0.9%CVE-2011-10020HIGHKaillera 0.86 Server DoS via Malformed UDP PacketEPSS 0.9%CVE-2020-3474MEDIUMCisco IOS XE Software Web Management Framework VulnerabilitiesEPSS 0.9%CVE-2017-6650—A vulnerability in the Telnet CLI command of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus Series Switches could allow EPSS 0.9%CVE-2023-0299HIGHImproper Input Validation in publify/publifyEPSS 0.9%CVE-2024-3385HIGHPAN-OS: Firewall Denial of Service (DoS) when GTP Security is DisabledEPSS 0.9%CVE-2022-39060CRITICALChangingTec MegaServiSignAdapter - Improper Input ValidationEPSS 0.9%CVE-2026-46452MEDIUMApache NimBLE: Mesh Proxy SAR reassembly unbounded append and unchecked failureEPSS 0.9%CVE-2021-3911MEDIUMMisconfigured IP address field in ROA leads to OctoRPKI crashEPSS 0.9%CVE-2023-42449HIGHMalicious head initialiser can extract PTs from control of Hydra scripts, leading to locked participant commits or spoofed commitsEPSS 0.9%