Fallos del tipo CWE-444

365 resultados

Interpretação inconsistente de requisições HTTP (HTTP Request Smuggling)

Ocorre quando proxies, load balancers ou firewalls interpretam requisições HTTP de forma diferente do servidor backend. Um atacante explora essa discrepância enviando requisições ambíguas (com headers conflitantes ou corpo malformado) que são parseadas de modos distintos por camadas diferentes da infraestrutura, permitindo contornar controles de segurança ou injetar requisições não autorizadas no backend.

Ejemplo

Um proxy usa Content-Length para determinar o fim da requisição, enquanto o servidor backend usa Transfer-Encoding: chunked. O atacante envia uma requisição que contém dois requests: um legítimo (que passa pelo proxy) e um malicioso embutido no corpo (que o backend processa como requisição separada). Resultado: bypass de WAF ou injeção de cache envenenado.

Cómo mitigar

Normalize o parsing: garanta que todas as camadas (proxy, load balancer, aplicação) usem as mesmas regras RFC 7230 para interpretar headers Content-Length e Transfer-Encoding; desabilite métodos ambíguos no proxy (reject requisições com ambos os headers); mantenha proxies e servidores sincronizados em versões e configurações de parsing HTTP.

CVE-2026-73257CRITICALMongoose: Content-Length + Transfer-Encoding coexistence enables request smugglingEPSS 0.7%CVE-2024-53868HIGHApache Traffic Server: Malformed chunked message body allows request smugglingEPSS 0.7%CVE-2026-2833CRITICALHTTP Request Smuggling via Premature UpgradeEPSS 0.7%CVE-2024-9622MEDIUMResteasy-netty4-cdi: resteasy-netty4: resteasy-reactor-netty: http request smuggling leading to client timeouts in resteasy-netty4EPSS 0.6%CVE-2026-58153MEDIUMApache Traffic Server: HTTP/2 to HTTP/1 conversion forwards origin trailers to clients unsafelyEPSS 0.6%CVE-2025-61258HIGHOutsystems Platform Server 11.18.1.37828 allows attackers to cause a denial of service via a crafted content-length value mismatching the boEPSS 0.6%CVE-2026-42581MEDIUMNetty: HTTP/1.0 TE+CL Coexistence Bypasses Smuggling SanitizationEPSS 0.6%CVE-2026-67182MEDIUMRouille 0.3.3 - 3.6.2 HTTP Request Smuggling via proxy Header InjectionEPSS 0.6%CVE-2026-73494HIGHblaze: Multiple HTTP/1.1 request-smuggling primitives in blaze's Java wire parserEPSS 0.6%CVE-2026-23527HIGHh3 v1 has Request Smuggling (TE.TE) issueEPSS 0.6%CVE-2026-39805MEDIUMCL.CL HTTP request smuggling via duplicate Content-Length in banditEPSS 0.6%CVE-2026-13762HIGHHTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAFEPSS 0.6%CVE-2024-56908MEDIUMIn Perfex Crm < 3.2.1, an authenticated attacker can send a crafted HTTP POST request to the affected upload_sales_file endpoint. By providiEPSS 0.6%CVE-2024-38494HIGHSymantec Privileged Access Manager Remote Command Execution vulnerabilityEPSS 0.6%CVE-2026-57834HIGHApache Traffic Server: Malformed chunked message body allows request smugglingEPSS 0.6%CVE-2026-114216MEDIUMChunk extensions accept bare LF and CR, enabling request smuggling in BanditEPSS 0.6%CVE-2024-56523CRITICALRadware Cloud Web Application Firewall (WAF) before 2025-05-07 allows remote attackers to bypass firewall filters by placing random data in EPSS 0.6%CVE-2020-5218MEDIUMAbility in Sylius to switch channels via GET parameter enabled in production environmentsEPSS 0.6%CVE-2026-74848HIGHApache APISIX: Cross-user response poisoning in serverless pluginsEPSS 0.6%CVE-2025-43859CRITICALh11 accepts some malformed Chunked-Encoding bodiesEPSS 0.6%