Fallos del tipo CWE-20

5417 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-2018-7935MEDIUM There is a vulnerability in 21.328.01.00.00 version of the E5573Cs-322. Remote attackers could exploit this vulnerability to make the netwoEPSS 1.1%CVE-2025-1087CRITICALArbitrary Code Execution in Kong Insomnia Desktop ApplicationEPSS 1.1%CVE-2021-44530—An injection vulnerability exists in a third-party library used in UniFi Network Version 6.5.53 and earlier (Log4J CVE-2021-44228) allows a EPSS 1.1%CVE-2020-3217HIGHCisco IOS, IOS XE, IOS XR, and NX-OS Software One Platform Kit Remote Code Execution VulnerabilityEPSS 1.1%CVE-2023-45178MEDIUMIBM Db2 denial of serviceEPSS 1.1%CVE-2023-46167MEDIUMIBM Db2 denial of serviceEPSS 1.1%CVE-2020-3134MEDIUMCisco Email Security Appliance Zip Decompression Engine Denial of Service VulnerabilityEPSS 1.1%CVE-2023-47003CRITICALAn issue in RedisGraph v.2.12.10 allows an attacker to execute arbitrary code and cause a denial of service via a crafted string in DataBlocEPSS 1.1%CVE-2023-31149CRITICALImproper Input Validation in Web InterfaceEPSS 1.1%CVE-2023-31148CRITICALImproper Input Validation in Web InterfaceEPSS 1.1%CVE-2020-26185HIGHDell BSAFE Micro Edition Suite, versions prior to 4.5.1, contain a Buffer Over-Read Vulnerability.EPSS 1.1%CVE-2020-35493—A flaw exists in binutils in bfd/pef.c. An attacker who is able to submit a crafted PEF file to be parsed by objdump could cause a heap buffEPSS 1.1%CVE-2024-35296HIGHApache Traffic Server: Invalid Accept-Encoding can force forwarding requestsEPSS 1.1%CVE-2023-48310CRITICALAbility to DoS the testing infrastructure by overwriting filesEPSS 1.1%CVE-2023-34457MEDIUMMechanicalSoup vulnerable to malicious web server reading arbitrary files on client using file input inside HTML formEPSS 1.1%CVE-2021-21431HIGHImproper Input Validation in sopel-plugins.channelmgntEPSS 1.1%CVE-2024-40520HIGHSeaCMS 12.9 has a remote code execution vulnerability. The vulnerability is caused by admin_config_mark.php directly splicing and writing thEPSS 1.1%CVE-2020-3542MEDIUMCisco Webex Training Unauthorized Meeting Join VulnerabilityEPSS 1.1%CVE-2023-40699HIGHIBM InfoSphere Information Server denial of serviceEPSS 1.1%CVE-2024-25581HIGHTransfer requests received over DoH can lead to a denial of service in DNSdistEPSS 1.1%