Fallos del tipo CWE-405

74 resultados

Consumo assimétrico de recursos (amplificação)

Fraqueza em que uma operação barata para o atacante consome muitos recursos do servidor ou do sistema-alvo, criando um desequilíbrio entre esforço investido e dano causado. O atacante aproveita essa desproporcionalidade para sobrecarregar a aplicação ou infraestrutura com pouco investimento, levando a negação de serviço.

Ejemplo

Um servidor web que processa requisições de busca complexas sem limite: um atacante envia 1.000 buscas full-text em paralelo, cada uma consumindo CPU por minutos, enquanto ele gasta apenas segundos enviando HTTP requests. O servidor fica indisponível para usuários legítimos.

Cómo mitigar

Implemente rate limiting, timeout de operações, validação de entrada para rejeitar queries complexas, cache de resultados, e monitore proporção entre requisições recebidas e recursos consumidos. Escale horizontalmente se necessário e considere usar filas assíncronas para operações pesadas.

CVE-2026-75029MEDIUMMessage parser retains every identical singleton RDATA, enabling wire-to-work amplificationEPSS 0.5%CVE-2025-66564HIGHSigstore Timestamp Authority allocates excessive memory during request parsingEPSS 0.5%CVE-2025-42874HIGHDenial of service (DOS) in SAP NetWeaver (remote service for Xcelsius)EPSS 0.5%CVE-2026-0485HIGHDenial of service (DOS) vulnerability in SAP BusinessObjects BI PlatformEPSS 0.5%CVE-2026-68531LOWConcrete CMS below 9.5.3 is vulnerable to Authenticated Denial of Service via Unescaped SQL LIKE Wildcards in Keyword SearchEPSS 0.5%CVE-2026-104817HIGHMisskey: Lack of rate limiting and size restrictions in RSS fetching APIEPSS 0.5%CVE-2026-103880HIGHApache Directory LDAP API: Denial of service via excessive bcrypt cost factor in stored passwordsEPSS 0.4%CVE-2026-86432MEDIUMcommonmark 2.0.0 before 2.8.4 Denial of Service via XMLEPSS 0.4%CVE-2025-26516MEDIUMCVE-2025-26516 Denial of Service Vulnerability in StorageGRID (formerly StorageGRID Webscale)EPSS 0.4%CVE-2026-45557MEDIUMTechnitium DNS Server excessive DNSSEC requestsEPSS 0.4%CVE-2025-32394MEDIUMAutoGPT: There is a DoS vulnerability in AITextSummarizerBlockEPSS 0.4%CVE-2025-42873MEDIUMDenial of Service (DoS) in SAPUI5 framework (Markdown-it component)EPSS 0.4%CVE-2026-82309MEDIUMRobots::Validate versions from 0.3.2 before 0.3.11 for Perl allow unbounded outbound DNS queries per validation via a forward-confirmation loop that does not bound the names it queriesEPSS 0.4%CVE-2026-24324MEDIUMDenial of service (DOS) vulnerability in SAP BusinessObjects Business Intelligence Platform (AdminTools)EPSS 0.4%CVE-2025-49643MEDIUMFrontend DoS vulnerability due to asymmetric resource consumptionEPSS 0.4%CVE-2025-46598MEDIUMBitcoin Core through 29.0 allows a denial of service via a crafted transaction.EPSS 0.3%CVE-2026-104423HIGHZebra before 6.2.1 Denial of Service via Uncapped V6 Shielded Proof VerificationEPSS 0.3%CVE-2026-104431HIGHZebra before 6.0.0 Denial of Service via Synchronous Script FFI VerificationEPSS 0.3%CVE-2024-0450MEDIUMQuoted zip-bomb protection for zipfileEPSS 0.3%CVE-2026-35665MEDIUMOpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body ParsingEPSS 0.3%