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-2020-11261HIGHMemory corruption due to improper check to return error when user application requests memory allocation of a huge size in Snapdragon Auto, EPSS 1.5%KEVCVE-2019-1766HIGHCisco IP Phone 8800 Series File Upload Denial of Service VulnerabilityEPSS 1.5%CVE-2022-26336—A carefully crafted TNEF file can cause an out of memory exceptionEPSS 1.5%CVE-2022-3157HIGHRockwell Automation GuardLogix and ControlLogix controllers Vulnerable to Denial-Of-Service AttackEPSS 1.5%CVE-2021-20206—An improper limitation of path name flaw was found in containernetworking/cni in versions before 0.8.1. When specifying the plugin to load iEPSS 1.5%CVE-2023-31039CRITICALApache bRPC: ServerOptions.pid_file may cause arbitrary code executionEPSS 1.5%CVE-2018-0256—A vulnerability in the peer-to-peer message processing functionality of Cisco Packet Data Network Gateway could allow an unauthenticated, reEPSS 1.5%CVE-2021-1513HIGHCisco SD-WAN Software vDaemon Denial of Service VulnerabilityEPSS 1.5%CVE-2023-22886HIGHApache Airflow JDBC Provider: RCE VulnerabilityEPSS 1.5%CVE-2019-12633MEDIUMCisco Unified Contact Center Express Request Processing Server-Side Request Forgery VulnerabilityEPSS 1.5%CVE-2026-0933HIGHOS Command Injection in `wrangler pages deploy`EPSS 1.5%CVE-2019-16027HIGHCisco IOS XR Software Intermediate System–to–Intermediate System Denial of Service VulnerabilityEPSS 1.5%CVE-2026-41042CRITICALApache Gravitino: Unauthenticated callers can supply a malicious H2 JDBC URL through the testConnection API, which executes arbitrary Java code on the server via H2's INIT parameterEPSS 1.5%CVE-2017-12173MEDIUMIt was found that sssd's sysdb_search_user_by_upn_res() function before 1.16.0 did not sanitize requests when querying its local cache and wEPSS 1.5%CVE-2020-3359HIGHCisco IOS XE Software for Catalyst 9800 Series Wireless Controllers Multicast DNS Denial of Service VulnerabilityEPSS 1.5%CVE-2019-11289HIGHA forged route service request using an invalid nonce can cause the gorouter to panic and crashEPSS 1.5%CVE-2020-3272HIGHCisco Prime Network Registrar DHCP Denial of Service VulnerabilityEPSS 1.5%CVE-2020-3221HIGHCisco IOS XE Software Flexible NetFlow Version 9 Denial of Service VulnerabilityEPSS 1.5%CVE-2022-28763HIGHImproper URL parsing in Zoom ClientsEPSS 1.5%CVE-2018-3777—Insufficient URI encoding in restforce before 3.0.0 allows attacker to inject arbitrary parameters into Salesforce API requests.EPSS 1.5%