Falhas do tipo CWE-770

1.834 resultados

Alocação de recursos sem limite (negação de serviço por esgotamento)

A aplicação aloca recursos (memória, conexões, arquivos, threads) a pedido de um usuário sem impor limites, permitindo que um atacante esgote todos os recursos disponíveis e derrube o serviço. É basicamente deixar a porta aberta para qualquer um encher a caixa d'água até transbordar.

Exemplo

Um servidor web que cria uma nova thread para cada requisição HTTP recebida, sem limite. Um atacante envia milhares de requisições simultâneas e esgota o pool de threads, tornando o servidor inresponsivo para usuários legítimos — é negação de serviço puro.

Como mitigar

Implemente limites rigorosos: rate limiting (requisições por IP/usuário), quotas de recursos, pool de threads/conexões com tamanho máximo, timeout em operações, e monitoramento de consumo. Valide tamanhos de entrada e rejeite alocações que excedam os limites configurados.

CVE-2021-29511MEDIUMMemory over-allocation in evm crateEPSS 1.3%CVE-2024-27268MEDIUMIBM WebSphere Application Server Liberty denial of serviceEPSS 1.3%CVE-2025-21504MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.39 aEPSS 1.3%CVE-2026-45769HIGHikev2: unbounded client transform storage can lead to resource exhaustionEPSS 1.3%CVE-2022-20757HIGHCisco Firepower Threat Defense Software Denial of Service VulnerabilityEPSS 1.2%CVE-2023-0121MEDIUMAllocation of Resources Without Limits or Throttling in GitLabEPSS 1.2%CVE-2023-6563HIGHKeycloak: offline session token dosEPSS 1.2%CVE-2023-29779HIGHSengled Dimmer Switch V0.0.9 contains a denial of service (DOS) vulnerability, which allows a remote attacker to send malicious Zigbee messaEPSS 1.2%CVE-2022-34357MEDIUMIBM Cognos Analytics Mobile Server denial of serviceEPSS 1.2%CVE-2024-23837HIGHLibHTP unbounded folded header handling leads to denial serviceEPSS 1.2%CVE-2025-47950HIGHCoreDNS Vulnerable to DoQ Memory Exhaustion via Stream AmplificationEPSS 1.2%CVE-2018-10908MEDIUMIt was found that vdsm before version 4.20.37 invokes qemu-img on untrusted inputs without limiting resources. By uploading a specially crafEPSS 1.2%CVE-2023-38492MEDIUMKirby vulnerable to denial of service from unlimited password lengthsEPSS 1.2%CVE-2024-1765MEDIUMUnlimited resource allocation by QUIC CRYPTO frames flooding in quicheEPSS 1.2%CVE-2026-50506HIGHOData for ASP.NET and ASP.NET Core Denial of Service VulnerabilityEPSS 1.2%CVE-2026-49788HIGHHTTP/2 Denial of Service VulnerabilityEPSS 1.2%CVE-2026-45646HIGHOData for ASP.NET and ASP.NET Core Denial of Service VulnerabilityEPSS 1.2%CVE-2026-49787HIGHHTTP.sys Denial of Service VulnerabilityEPSS 1.2%CVE-2024-38535HIGHSuricata http2: oom from duplicate headersEPSS 1.2%CVE-2024-32660HIGHFreeRDP zgfx_decompress out of memory vulnerabilityEPSS 1.2%