Fallos del tipo CWE-444

320 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-2026-42584HIGHNetty: HttpClientCodec response desynchronizationEPSS 0.8%CVE-2023-47641LOWInconsistent interpretation of `Content-Length` vs. `Transfer-Encoding` in aiohttpEPSS 0.8%CVE-2024-12397HIGHIo.quarkus.http/quarkus-http-core: quarkus http cookie smugglingEPSS 0.8%CVE-2024-27922CRITICALHTTP Handling Vulnerability in the Bare serverEPSS 0.8%CVE-2024-33452HIGHAn issue in OpenResty lua-nginx-module v.0.10.26 and before allows a remote attacker to conduct HTTP request smuggling via a crafted HEAD reEPSS 0.8%CVE-2024-6827HIGHHTTP Request Smuggling in benoitc/gunicornEPSS 0.8%CVE-2026-2835CRITICALHTTP Request Smuggling via HTTP/1.0 and Transfer-Encoding MisparsingEPSS 0.8%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-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-2023-46137MEDIUMtwisted.web has disordered HTTP pipeline responseEPSS 0.8%CVE-2020-5207MEDIUMRequest smuggling is possible in Ktor when both chunked TE and content length specifiedEPSS 0.8%CVE-2022-31109HIGHHTTP Host Header Attack Vulnerability in laminas-diactorosEPSS 0.8%CVE-2023-38697MEDIUM protocol-http1 HTTP Request/Response Smuggling vulnerabilityEPSS 0.8%CVE-2020-5220MEDIUMAbility to expose data in Sylius by using an unintended serialisation groupEPSS 0.7%CVE-2026-28367HIGHUndertow: undertow: request smuggling via `\r\r\r` as a header block terminatorEPSS 0.7%CVE-2026-62899MEDIUM.NET Security Feature Bypass VulnerabilityEPSS 0.7%CVE-2026-28368HIGHUndertow: undertow: request smuggling via inconsistent header parsingEPSS 0.7%CVE-2023-33987HIGHRequest smuggling and request concatenation in SAP Web DispatcherEPSS 0.7%CVE-2026-27690CRITICALHTTP Request Smuggling in SAP ApprouterEPSS 0.7%