Falhas do tipo CWE-20

5.391 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-2022-35668MEDIUMAdobe Acrobat Reader Improper Input Validation Memory leakEPSS 4.1%CVE-2023-34111HIGHCommand Injection Vulnerability in `Release PR Merged` Workflow in taosdata/grafanapluginEPSS 4.0%CVE-2018-0378HIGHCisco NX-OS Software for Nexus 5500, 5600, and 6000 Series Switches Precision Time Protocol Denial of Service VulnerabilityEPSS 4.0%CVE-2021-1141CRITICALCisco Smart Software Manager Satellite Web UI Command Injection VulnerabilitiesEPSS 4.0%CVE-2021-1139CRITICALCisco Smart Software Manager Satellite Web UI Command Injection VulnerabilitiesEPSS 4.0%CVE-2018-0313—A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an authenticated, remote attacker to send a malicious packet to thEPSS 3.9%CVE-2024-30040HIGHWindows MSHTML Platform Security Feature Bypass VulnerabilityEPSS 3.9%KEVCVE-2018-0274—A vulnerability in the CLI parser of Cisco Network Services Orchestrator (NSO) could allow an authenticated, remote attacker to execute arbiEPSS 3.9%CVE-2022-21668HIGHPipenv's requirements.txt parsing allows malicious index url in commentsEPSS 3.9%CVE-2026-47668CRITICALDbGate: Unauthenticated Remote Code Execution via JSON Script RunnerEPSS 3.9%CVE-2020-11008MEDIUMMalicious URLs can still cause Git to send a stored credential to the wrong serverEPSS 3.9%CVE-2016-9577HIGHA vulnerability was discovered in SPICE before 0.13.90 in the server's protocol handling. An authenticated attacker could send crafted messaEPSS 3.8%CVE-2018-8850—Philips e-Alert Unit (non-medical device), Version R2.1 and prior. The software does not validate input properly, allowing an attacker to crEPSS 3.8%CVE-2018-0234—A vulnerability in the implementation of Point-to-Point Tunneling Protocol (PPTP) functionality in Cisco Aironet 1810, 1830, and 1850 SeriesEPSS 3.8%CVE-2018-0467—Cisco IOS and IOS XE Software IPv6 Hop-by-Hop Options Denial of Service VulnerabilityEPSS 3.8%CVE-2017-12277—A vulnerability in the Smart Licensing Manager service of the Cisco Firepower 4100 Series Next-Generation Firewall (NGFW) and Firepower 9300EPSS 3.8%CVE-2023-41061HIGHA validation issue was addressed with improved logic. This issue is fixed in watchOS 9.6.2, iOS 16.6.1 and iPadOS 16.6.1. A maliciously crafEPSS 3.8%KEVCVE-2018-0104—A vulnerability in Cisco WebEx Network Recording Player for Advanced Recording Format (ARF) files could allow a remote attacker to execute aEPSS 3.8%CVE-2019-1753HIGHCisco IOS XE Software Privilege Escalation VulnerabilityEPSS 3.8%CVE-2018-0287—A vulnerability in the Cisco WebEx Network Recording Player for Advanced Recording Format (ARF) files could allow an unauthenticated, remoteEPSS 3.8%