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HTTP Request Smuggling in 2020

Are “mainstream” web/proxy servers vulnerable? • Scope: IIS Apache



T-Reqs: HTTP Request Smuggling with Differential Fuzzing

Aban 24 1400 AP Namely



HTTP Request Smuggling in 2020 – New Variants New Defenses

HTTP Request Smuggling (AKA HTTP Desyncing) is an attack technique that A fix is expected on August 2020 (Squid security advisory SQUID-2020:10).



HTTP REQUEST SMUGGLING

Some servers (e.g. IIS and Apache) reject such a request



EN-HTTP-Request-Smuggling.pdf

Some servers (e.g. IIS and Apache) reject such a request



Empirical Study of HTTP Request Smuggling in Open-Source

In total six servers (S1-S6) and six proxies (P1-P6) were tested. Once all issues have been fixed or the responsible disclosure deadline has passed



Browser-Powered Desync Attacks: A New Frontier in HTTP Request

The recent rise of HTTP Request Smuggling has seen a flood of critical Pause-based desync introduces a new desync technique affecting Apache and Varnish ...



Request Smuggling 101

HTTP Tunneling. • What is Request Smuggling? • Attacks. • Cache poisoning. • Credentials hijacking. • URL filtering bypass. • XSS. • Defences. • Mitigations.



HTTP Desync Attacks: Request Smuggling Reborn

HTTP Request Smuggling was first documented back in 2005 by Watchfire1 This was easily fixed using the X-Forwarded-Proto header observed earlier:.



Web Application (OWASP Top 10) Scan Report

Azar 23 1394 AP The multiple vulnerabilities fixed in Apache Tomcat 6.0.20 were reported in ... Transfer vulnerability