Weaknesses of type CWE-444

323 results

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. O atacante injeta headers ou manipula o tamanho do corpo da requisição (via Content-Length ou Transfer-Encoding) para fazer o intermediário e o servidor final processar requisições distintas. Isso permite contornar controles de segurança, envenenar caches, sequestrar sessões de outros usuários ou executar ataques no servidor.

Example

Um atacante envia uma requisição com dois headers Content-Length conflitantes, ou mistura Content-Length com Transfer-Encoding chunked. O proxy interpreta o fim da requisição em um ponto, enquanto o servidor backend interpreta em outro, fazendo com que parte do payload do atacante seja concatenado à próxima requisição de um usuário legítimo.

How to mitigate

Normalize e valide rigorosamente headers HTTP (Content-Length, Transfer-Encoding) em proxies e servidores; use HTTP/2 ou HTTP/3 que mitigam o problema; mantenha proxy e backend sincronizados quanto à interpretação de requisições; desabilite HTTP/1.0 se possível e aplique filtros que rejeitem requisições ambíguas ou malformadas.

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-2024-53008MEDIUMInconsistent interpretation of HTTP requests ('HTTP Request/Response Smuggling') issue exists in HAProxy. If this vulnerability is exploitedEPSS 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-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%