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-2024-22081CRITICALAn issue was discovered in Elspec G5 digital fault recorder versions 1.1.4.15 and before. Unauthenticated memory corruption can occur in theEPSS 0.8%CVE-2026-63382CRITICALlibevent evhttp: Multiple HTTP Parser Bugs Enable Request SmugglingEPSS 0.8%CVE-2024-52530HIGHGNOME libsoup before 3.6.0 allows HTTP request smuggling in some configurations because '\0' characters at the end of header names are ignorEPSS 0.8%CVE-2021-34559MEDIUMA vulnerability in WirelessHART-Gateway <= 3.0.8 may allow remote attackers to rewrite links and URLs in cached pages to arbitrary stringsEPSS 0.8%CVE-2020-5207MEDIUMRequest smuggling is possible in Ktor when both chunked TE and content length specifiedEPSS 0.8%CVE-2023-38697MEDIUM protocol-http1 HTTP Request/Response Smuggling vulnerabilityEPSS 0.8%CVE-2026-62899MEDIUM.NET Security Feature Bypass VulnerabilityEPSS 0.7%CVE-2026-9190CRITICALHTTP request smuggling in Progress MarkLogic ServerEPSS 0.7%CVE-2020-5220MEDIUMAbility to expose data in Sylius by using an unintended serialisation groupEPSS 0.7%CVE-2026-28368HIGHUndertow: undertow: request smuggling via inconsistent header parsingEPSS 0.7%CVE-2026-28367HIGHUndertow: undertow: request smuggling via `\r\r\r` as a header block terminatorEPSS 0.7%CVE-2025-58056LOWNetty is vulnerable to request smuggling due to incorrect parsing of chunk extensionsEPSS 0.7%CVE-2026-24880HIGHApache Tomcat: Request smuggling via invalid chunk extensionEPSS 0.7%CVE-2026-63379MEDIUMLibevent: HTTP Header smugglingEPSS 0.7%CVE-2026-33870HIGHNetty: HTTP Request Smuggling via Chunked Extension Quoted-String ParsingEPSS 0.7%CVE-2023-33987HIGHRequest smuggling and request concatenation in SAP Web DispatcherEPSS 0.7%CVE-2026-28369HIGHUndertow: undertow: request smuggling via malformed http request headersEPSS 0.7%CVE-2026-27690CRITICALHTTP Request Smuggling in SAP ApprouterEPSS 0.7%CVE-2024-27439MEDIUMApache Wicket: Possible bypass of CSRF protectionEPSS 0.7%CVE-2026-13763HIGHHTTP/2 Stream Parser Confusion Body-Inspection Bypass in AWS Application Load Balancer with AWS WAFEPSS 0.7%