Falhas do tipo CWE-770

2.215 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-2023-26964HIGHAn issue was discovered in hyper v0.13.7. h2-0.2.4 Stream stacking occurs when the H2 component processes HTTP2 RST_STREAM frames. As a resuEPSS 1.1%CVE-2021-0261HIGHJunos OS: Denial of Service vulnerability in J-Web and web based (HTTP/HTTPS) services caused by a high number of specific requestsEPSS 1.1%CVE-2024-1765MEDIUMUnlimited resource allocation by QUIC CRYPTO frames flooding in quicheEPSS 1.1%CVE-2024-22189HIGHQUIC's Connection ID Mechanism vulnerable to Memory Exhaustion AttackEPSS 1.1%CVE-2025-21521HIGHVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling). Supported versions that are affected are 8.0EPSS 1.1%CVE-2026-45292MEDIUMopentelemetry-java: Unbounded Memory Allocation in W3C Baggage PropagationEPSS 1.1%CVE-2024-37298HIGHPotential memory exhaustion attack due to sparse slice deserializationEPSS 1.1%CVE-2026-5680HIGHUndertow-core: undertow: denial of service via websocket permessage-deflate processingEPSS 1.1%CVE-2022-43686MEDIUMIn Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2, the authTypeConcreteCookieMap table can be filled up causing EPSS 1.1%CVE-2024-49767MEDIUMWerkzeug possible resource exhaustion when parsing file data in formsEPSS 1.1%CVE-2024-41128MEDIUMAction Dispatch has possible ReDoS vulnerability in query parameter filteringEPSS 1.1%CVE-2021-32476—A denial-of-service risk was identified in the draft files area, due to it not respecting user file upload limits. Moodle versions 3.10 to 3EPSS 1.1%CVE-2026-96236HIGHASP.NET Core Denial of Service VulnerabilityEPSS 1.1%CVE-2026-3039HIGHBIND 9 server memory exhaustion during GSS-API TKEY negotiationEPSS 1.1%CVE-2026-56814MEDIUMPlug: multipart :length limit is not charged for part headers, enabling unbounded temp-file creation (denial of service)EPSS 1.1%CVE-2026-85319HIGHActive Directory Federation Services (AD FS) Denial of Service VulnerabilityEPSS 1.1%CVE-2025-27556MEDIUMAn issue was discovered in Django 5.1 before 5.1.8 and 5.0 before 5.0.14. The NFKC normalization is slow on Windows. As a consequence, djangEPSS 1.1%CVE-2022-31394HIGHHyperium Hyper before 0.14.19 does not allow for customization of the max_header_list_size method in the H2 third-party software, allowing aEPSS 1.1%CVE-2025-32049HIGHLibsoup: denial of service attack to websocket serverEPSS 1.1%CVE-2023-28837MEDIUMWagtail vulnerable to denial-of-service via memory exhaustion when uploading large filesEPSS 1.1%