Falhas do tipo CWE-400

2.979 resultados

Consumo não controlado de recursos

A aplicação não limita adequadamente o consumo de recursos (memória, CPU, conexões, disco) em resposta a requisições ou eventos, permitindo que um atacante esgote os recursos disponíveis. Resultado: negação de serviço, travamento ou crash da aplicação.

Exemplo

Um servidor web que aceita uploads sem limite de tamanho permite que um atacante envie um arquivo gigante, preenchendo o disco e derrubando o serviço. Outro cenário: aceitar conexões TCP indefinidamente sem timeout, até esgotar o número máximo de sockets do sistema operacional.

Como mitigar

Implemente limites explícitos: tamanho máximo de requisição/arquivo, timeout de conexão, limite de memória por processo, rate limiting. Use filas com capacidade máxima e rejeite requisições excedentes com mensagem de erro clara (HTTP 429, por exemplo).

CVE-2018-10851MEDIUMPowerDNS Authoritative Server 3.3.0 up to 4.1.4 excluding 4.1.5 and 4.0.6, and PowerDNS Recursor 3.2 up to 4.1.4 excluding 4.1.5 and 4.0.9, EPSS 6.0%CVE-2021-22119—Spring Security versions 5.5.x prior to 5.5.1, 5.4.x prior to 5.4.7, 5.3.x prior to 5.3.10 and 5.2.x prior to 5.2.11 are susceptible to a DeEPSS 6.0%CVE-2022-21698HIGHUncontrolled Resource Consumption in promhttpEPSS 6.0%CVE-2017-12174—It was found that when Artemis and HornetQ before 2.4.0 are configured with UDP discovery and JGroups discovery a huge byte array is createdEPSS 6.0%CVE-2021-37136—The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocatiEPSS 5.9%CVE-2022-31129HIGHInefficient Regular Expression Complexity in momentEPSS 5.6%CVE-2023-36435HIGHMicrosoft QUIC Denial of Service VulnerabilityEPSS 5.5%CVE-2025-66959HIGHAn issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the GGUF decoderEPSS 5.2%CVE-2018-14629MEDIUMA denial of service vulnerability was discovered in Samba's LDAP server before versions 4.7.12, 4.8.7, and 4.9.3. A CNAME loop could lead toEPSS 5.2%CVE-2018-12545—In Eclipse Jetty version 9.3.x and 9.4.x, the server is vulnerable to Denial of Service conditions if a remote client sends either large SETEPSS 5.1%CVE-2022-29145HIGH.NET and Visual Studio Denial of Service VulnerabilityEPSS 5.1%CVE-2026-20139MEDIUMClient-Side Denial of Service (DoS) through ''/splunkd/__raw/services/authentication/users/username'' REST API endpoint in Splunk EnterpriseEPSS 5.0%CVE-2022-29117HIGH.NET and Visual Studio Denial of Service VulnerabilityEPSS 5.0%CVE-2021-22904—The actionpack ruby gem before 6.1.3.2, 6.0.3.7, 5.2.4.6, 5.2.6 suffers from a possible denial of service vulnerability in the Token AuthentEPSS 5.0%CVE-2019-5739—Keep-alive HTTP and HTTPS connections can remain open and inactive for up to 2 minutes in Node.js 6.16.0 and earlier. Node.js 8.0.0 introducEPSS 4.9%CVE-2023-36799MEDIUM.NET Core and Visual Studio Denial of Service VulnerabilityEPSS 4.9%CVE-2004-1464MEDIUMCisco IOS 12.2(15) and earlier allows remote attackers to cause a denial of service (refused VTY (virtual terminal) connections), via a crafEPSS 4.8%KEVCVE-2017-6017—A Resource Exhaustion issue was discovered in Schneider Electric Modicon M340 PLC BMXNOC0401, BMXNOE0100, BMXNOE0110, BMXNOE0110H, BMXNOR020EPSS 4.8%CVE-2021-3622—A flaw was found in the hivex library. This flaw allows an attacker to input a specially crafted Windows Registry (hive) file, which would cEPSS 4.8%CVE-2025-25205HIGHRemote Authentication-Bypass can lead to server crash or limited information disclosure due to faulty pattern matchingEPSS 4.8%