Weaknesses of type CWE-444

320 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-2023-46589HIGHApache Tomcat: HTTP request smuggling via malformed trailer headersEPSS 2.7%CVE-2019-16789HIGHHTTP Request Smuggling in Waitress: Invalid whitespace characters in headersEPSS 2.6%CVE-2019-16785HIGHHTTP Request Smuggling: LF vs CRLF handling in WaitressEPSS 2.5%CVE-2021-37147—Request Smuggling - LF line endingEPSS 2.5%CVE-2021-22960—The parse function in llhttp < 2.1.4 and < 6.0.6. ignores chunk extensions when parsing the body of chunked requests. This leads to HTTP ReqEPSS 2.5%CVE-2019-16786HIGHHTTP Request Smuggling: Invalid Transfer-Encoding in WaitressEPSS 2.4%CVE-2022-22532—In SAP NetWeaver Application Server Java - versions KRNL64NUC 7.22, 7.22EXT, 7.49, KRNL64UC, 7.22, 7.22EXT, 7.49, 7.53, KERNEL 7.22, 7.49, 7EPSS 2.4%CVE-2022-31081HIGHInconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') in HTTP::DaemonEPSS 2.3%CVE-2022-24790CRITICALHTTP Request Smuggling in pumaEPSS 2.2%CVE-2021-32565—HTTP Request Smuggling, content length with invalid chartersEPSS 2.1%CVE-2023-27522HIGHApache HTTP Server: mod_proxy_uwsgi HTTP response splittingEPSS 2.1%CVE-2022-25763MEDIUMImproper input validation on HTTP/2 headers EPSS 2.0%CVE-2019-16792HIGHHTTP Request Smuggling: Content-Length Sent Twice in WaitressEPSS 2.0%CVE-2017-7559—In Undertow 2.x before 2.0.0.Alpha2, 1.4.x before 1.4.17.Final, and 1.3.x before 1.3.31.Final, it was found that the fix for CVE-2017-2666 wEPSS 2.0%CVE-2026-40175MEDIUMAxios has Unrestricted Cloud Metadata Exfiltration via Header Injection ChainEPSS 1.9%CVE-2022-36760CRITICALApache HTTP Server: mod_proxy_ajp Possible request smugglingEPSS 1.9%CVE-2022-2466—It was found that Quarkus 2.10.x does not terminate HTTP requests header context which may lead to unpredictable behavior.EPSS 1.9%CVE-2017-12165LOWIt was discovered that Undertow before 1.4.17, 1.3.31 and 2.0.0 processes http request headers with unusual whitespaces which can cause possEPSS 1.9%CVE-2022-24761HIGHHTTP Request Smuggling in waitressEPSS 1.8%CVE-2022-20713MEDIUMA vulnerability in the VPN web client services component of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat DefeEPSS 1.7%