Falhas do tipo CWE-444

365 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-2022-0552—A flaw was found in the original fix for the netty-codec-http CVE-2021-21409, where the OpenShift Logging openshift-logging/elasticsearch6-rEPSS 1.2%CVE-2024-27982MEDIUMThe team has identified a critical vulnerability in the http server of the most recent version of Node, where malformed headers can lead to EPSS 1.2%CVE-2026-48746CRITICALvLLM: OpenAI auth bypassEPSS 1.2%CVE-2025-49826HIGHNext.js DoS vulnerability via cache poisoningEPSS 1.1%CVE-2021-32715LOWLenient Parsing of Content-Length Header When Prefixed with Plus SignEPSS 1.1%CVE-2023-4639HIGHUndertow: cookie smuggling/spoofingEPSS 1.1%CVE-2024-32638MEDIUMApache APISIX: Forward-Auth Request SmugglingEPSS 1.1%CVE-2026-71324HIGHTraefik: Cross-user response poisoning via proxied CONNECT on Traefik's shared backend keep-alive poolEPSS 1.1%CVE-2021-39214HIGHLacking Protection against HTTP Request Smuggling in mitmproxyEPSS 1.1%CVE-2023-51747HIGHSMTP smuggling in Apache JamesEPSS 1.0%CVE-2026-14180MEDIUMUndertow-core: undertow:http request smuggling via oversized chunk-size bit overlapEPSS 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-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%