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-2022-34439MEDIUMDell PowerScale OneFS, versions 8.2.0.x-9.4.0.x contain allocation of Resources Without Limits or Throttling vulnerability. A remote unautheEPSS 1.0%CVE-2023-5379HIGHUndertow: ajp request closes connection exceeding maxrequestsizeEPSS 1.0%CVE-2025-21522MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser). Supported versions that are affected are 8.0.40 and EPSS 1.0%CVE-2022-3212HIGHDoS in axum-core due to missing request size limitEPSS 1.0%CVE-2024-54497MEDIUMThe issue was addressed with improved checks. This issue is fixed in iOS 18.2 and iPadOS 18.2, iPadOS 17.7.4, macOS Sequoia 15.2, macOS SonoEPSS 1.0%CVE-2025-21531MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.40 and prior, 8EPSS 1.0%CVE-2025-21525MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: DDL). Supported versions that are affected are 8.0.39 and priEPSS 1.0%CVE-2023-42457HIGHplone.rest vulnerable to Denial of Service when ++api++ is used many timesEPSS 1.0%CVE-2023-27556MEDIUMIBM Safer Payments denial of serviceEPSS 1.0%CVE-2025-21500MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.40 aEPSS 1.0%CVE-2025-21501MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.40 aEPSS 1.0%CVE-2023-25578HIGHStarlite DoS vulnerability when parsing multipart request bodyEPSS 1.0%CVE-2019-10163LOWA Vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.9, 4.0.8 allowing a remote, authorized master server to EPSS 1.0%CVE-2025-21491MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.40 and prior, 8EPSS 1.0%CVE-2025-21499MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: DDL). Supported versions that are affected are 8.4.3 and prioEPSS 1.0%CVE-2024-46668HIGHAn allocation of resources without limits or throttling vulnerability [CWE-770] in FortiOS versions 7.4.0 through 7.4.4, versions 7.2.0 throEPSS 1.0%CVE-2026-42587HIGHNetty: HttpContentDecompressor maxAllocation bypass via Content-Encoding: br/zstd/snappy enables decompression bomb DoSEPSS 1.0%CVE-2025-21492MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.36 aEPSS 1.0%CVE-2021-42142HIGHAn issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers mishandle the early use of a large epoch number. EPSS 1.0%CVE-2024-54538HIGHA denial-of-service issue was addressed with improved input validation. This issue is fixed in iOS 17.7.1 and iPadOS 17.7.1, iOS 18.1 and iPEPSS 1.0%