Falhas do tipo CWE-770

1.861 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-2026-77856HIGHUnbounded atom creation from typed struct field names in AshTypescript field selectorEPSS 0.5%CVE-2026-42788MEDIUMHTTP/2 frame size limit checked after body is buffered in banditEPSS 0.5%CVE-2023-51297MEDIUMA lack of rate limiting in the 'Email Settings' feature of PHPJabbers Hotel Booking System v4.0 allows attackers to send an excessive amountEPSS 0.5%CVE-2025-68456HIGHUnauthenticated Craft CMS users can trigger a database backupEPSS 0.5%CVE-2026-74837HIGHUnbounded atom creation from client-supplied RPC field names in AshTypescript field formatterEPSS 0.5%CVE-2026-57220HIGHRabbitMQ: Stream listener does not enforce configured frame-size limit during authentication, permitting unauth'd mem-exhaust DoSEPSS 0.5%CVE-2020-36907HIGHExtreme Networks Aerohive HiveOS <=11.x 11.x Unauthenticated Remote Denial of ServiceEPSS 0.5%CVE-2024-56319HIGHIn Matter (aka connectedhomeip or Project CHIP) through 1.4.0.0 before e3277eb, unlimited user label appends in a userlabel cluster can leadEPSS 0.5%CVE-2025-15682HIGHUnauthenticated Resource ExhaustionEPSS 0.5%CVE-2023-5573MEDIUMAllocation of Resources Without Limits or Throttling in vriteio/vriteEPSS 0.5%CVE-2026-44499HIGHZEBRA: Permanent Block Discovery Halt via Gossip Queue Saturation and Syncer PoisoningEPSS 0.5%CVE-2024-52796MEDIUMPassword Pusher's rate limiter can be bypassed by forging proxy headersEPSS 0.5%CVE-2026-69079HIGHUnauthenticated Denial of Service via Unbounded Activity-Timeline Range in CTI-TransmuteEPSS 0.5%CVE-2023-37906MEDIUMDiscourse vulnerable to DoS via post edit reasonEPSS 0.5%CVE-2026-50018MEDIUMHoverfly: Denial of Service via Goroutine Leak in Remote Post-Serve ActionsEPSS 0.5%CVE-2026-86452HIGHMISP Unauthenticated Mail Endpoints Allow Unbounded Storage Consumption and Request FloodingEPSS 0.5%CVE-2026-44240HIGHbasic-ftp allows a malicious FTP server to cause client-side denial of service via unbounded multiline control response bufferingEPSS 0.5%CVE-2026-46629MEDIUMTwig: Unbounded formatter memoisation in twig/intl-extra keyed on template-controlled argumentsEPSS 0.5%CVE-2026-11622HIGHPotential memory usage beyond configured limitsEPSS 0.5%CVE-2023-3242HIGHImproper initialization implementation in Portmapper used in B&R Industrial Automation Automation Runtime <G4.93 allows unauthenticated netwEPSS 0.5%