Falhas do tipo CWE-444

320 resultados

Interpretação inconsistente de requisições HTTP (HTTP Request Smuggling)

Ocorre quando um proxy, load balancer ou firewall interpreta uma requisição HTTP de forma diferente do servidor backend. Um atacante envia uma requisição ambígua que a camada intermediária processa como um pedido, mas o servidor entende como dois pedidos distintos — permitindo contornar controles de segurança, injetar requisições maliciosas ou sequestrar sessões de outros usuários.

Exemplo

Um proxy usa Content-Length para delimitar o corpo da requisição, enquanto o servidor backend prioriza Transfer-Encoding: chunked. O atacante envia um payload onde a primeira requisição termina segundo o proxy, mas o servidor vê uma segunda requisição oculta no corpo — essa segunda requisição pode roubar dados de sessão de outros usuários ou contornar WAF.

Como mitigar

Desabilite Transfer-Encoding: chunked em proxies se possível, normalize e valide rigorosamente headers HTTP (Content-Length e Transfer-Encoding não devem coexistir), mantenha proxy e servidor backend sincronizados em versão e configuração, e teste parsing ambíguo com ferramentas como http-request-smuggler.

CVE-2024-32638MEDIUMApache APISIX: Forward-Auth Request SmugglingEPSS 1.1%CVE-2021-39214HIGHLacking Protection against HTTP Request Smuggling in mitmproxyEPSS 1.1%CVE-2023-51747HIGHSMTP smuggling in Apache JamesEPSS 1.0%CVE-2024-23829MEDIUMaiohttp's HTTP parser (the python one, not llhttp) still overly lenient about separatorsEPSS 1.0%CVE-2017-12158—It was found that Keycloak would accept a HOST header URL in the admin console and use it to determine web resource locations. An attacker cEPSS 1.0%CVE-2024-53008MEDIUMInconsistent interpretation of HTTP requests ('HTTP Request/Response Smuggling') issue exists in HAProxy. If this vulnerability is exploitedEPSS 1.0%CVE-2020-26281MEDIUMrequest smuggling in async-h1EPSS 1.0%CVE-2020-10719MEDIUMA flaw was found in Undertow in versions before 2.1.1.Final, regarding the processing of invalid HTTP requests with large chunk sizes. This EPSS 1.0%CVE-2023-38522HIGHApache Traffic Server: Incomplete field name check allows request smugglingEPSS 1.0%CVE-2021-32715LOWLenient Parsing of Content-Length Header When Prefixed with Plus SignEPSS 1.0%CVE-2024-35161CRITICALApache Traffic Server: Incomplete check for chunked trailer section allows request smugglingEPSS 1.0%CVE-2024-21647MEDIUMHTTP Request/Response Smuggling in pumaEPSS 1.0%CVE-2024-10264HIGHHTTP Request Smuggling in netease-youdao/qanythingEPSS 1.0%CVE-2024-8925LOWErroneous parsing of multipart form dataEPSS 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-2023-40175HIGHInconsistent Interpretation of HTTP Requests in pumaEPSS 0.8%