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-2026-70188CRITICALASP.NET Core Security Feature Bypass VulnerabilityEPSS 0.9%CVE-2024-8925LOWErroneous parsing of multipart form dataEPSS 0.9%CVE-2026-88092CRITICALASP.NET Core Tampering VulnerabilityEPSS 0.9%CVE-2024-12397HIGHIo.quarkus.http/quarkus-http-core: quarkus http cookie smugglingEPSS 0.9%CVE-2026-4700CRITICALMitigation bypass in the Networking: HTTP componentEPSS 0.9%CVE-2026-93573MEDIUMIo.netty/netty-codec-http: netty split transfer-encoding fields bypass final-chunked validation and enable request smugglingEPSS 0.9%CVE-2023-46137MEDIUMtwisted.web has disordered HTTP pipeline responseEPSS 0.9%CVE-2021-41732HIGHAn issue was discovered in zeek version 4.1.0. There is a HTTP request splitting vulnerability that will invalidate any ZEEK HTTP based secuEPSS 0.9%CVE-2026-6324MEDIUMLibsoup: libsoup: http request smuggling via unsigned to signed conversion errorEPSS 0.9%CVE-2023-27238CRITICALLavaLite CMS v 9.0.0 was discovered to be vulnerable to web cache poisoning.EPSS 0.9%CVE-2024-41671HIGHtwisted.web has disordered HTTP pipeline responseEPSS 0.9%CVE-2023-47627MEDIUMRequest smuggling in aiohttpEPSS 0.9%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 0.9%CVE-2023-40175HIGHInconsistent Interpretation of HTTP Requests in pumaEPSS 0.8%CVE-2026-42584HIGHNetty: HttpClientCodec response desynchronizationEPSS 0.8%CVE-2023-47641LOWInconsistent interpretation of `Content-Length` vs. `Transfer-Encoding` in aiohttpEPSS 0.8%CVE-2024-27922CRITICALHTTP Handling Vulnerability in the Bare serverEPSS 0.8%CVE-2024-6827HIGHHTTP Request Smuggling in benoitc/gunicornEPSS 0.8%CVE-2022-31109HIGHHTTP Host Header Attack Vulnerability in laminas-diactorosEPSS 0.8%CVE-2026-2835CRITICALHTTP Request Smuggling via HTTP/1.0 and Transfer-Encoding MisparsingEPSS 0.8%