Fallos del tipo CWE-444

323 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-2025-43859CRITICALh11 accepts some malformed Chunked-Encoding bodiesEPSS 0.6%CVE-2026-31842HIGHTinyproxy HTTP request parsing desynchronization via case-sensitive Transfer-Encoding handlingEPSS 0.6%CVE-2024-29643CRITICALAn issue in croogo v.3.0.2 allows an attacker to perform Host header injection via the feed.rss component.EPSS 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-2026-14180MEDIUMUndertow-core: undertow:http request smuggling via oversized chunk-size bit overlapEPSS 0.6%CVE-2026-92238CRITICALAmbiguous parsing of mail headersEPSS 0.6%CVE-2025-32094MEDIUMAn issue was discovered in Akamai Ghost, as used for the Akamai CDN platform before 2025-03-26. Under certain circumstances, a client makingEPSS 0.6%CVE-2024-52304MEDIUMaiohttp vulnerable to request smuggling due to incorrect parsing of chunk extensionsEPSS 0.6%CVE-2026-50197HIGHSkipper: opaAuthorizeRequestWithBody filter bypasses OPA policy on Transfer-Encoding: chunked / HTTP/2 requestsEPSS 0.5%CVE-2022-38114MEDIUMClient-Side Desync Vulnerability EPSS 0.5%CVE-2024-23316HIGHPingAccess HTTP Request Desynchronization WeaknessEPSS 0.5%CVE-2021-33683MEDIUMSAP Web Dispatcher and Internet Communication Manager (ICM), versions - KRNL32NUC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL32UC 7.21, 7.21EXT, 7.22EPSS 0.5%CVE-2025-14523HIGHLibsoup: libsoup: duplicate host header handling causes host-parsing discrepancy (first- vs last-value wins)EPSS 0.5%CVE-2026-58047MEDIUMHTTP Smuggling in cPanel allows potential leak of credentials.EPSS 0.5%CVE-2024-44775HIGHkmqtt v0.2.7 is vulnerable to Denial of Service (DoS) due to a Null Pointer Exception. A remote attacker can cause the broker to crash by seEPSS 0.5%CVE-2026-59249MEDIUMSign-tolerant HTTP/1 chunk-size parser in Mint enables response smuggling against strict intermediaries on pooled connectionsEPSS 0.5%CVE-2026-55087MEDIUMEtherpad: x-proxy-path header reflected into admin HTML/JS/CSS (cache-poisoning XSS) and concatenated into redirect (open-redirect)EPSS 0.5%CVE-2026-24880HIGHApache Tomcat: Request smuggling via invalid chunk extensionEPSS 0.5%CVE-2024-21088HIGHVulnerability in the Oracle Production Scheduling product of Oracle E-Business Suite (component: Import Utility). Supported versions that aEPSS 0.5%CVE-2026-63379MEDIUMLibevent: HTTP Header smugglingEPSS 0.5%