The vulnerability in the uri_whitespace configuration implementation of the Squid proxy server allows a hacker to send hidden HTTP requests (HTTP Request Smuggling attack).

The vulnerability of the uriwhitespace configuration in the Squid proxy server is related to insufficient validation of input data. Exploiting this vulnerability allows a malicious actor to send hidden HTTP requests remotely. This constitutes an HTTP Request Smuggling attack...

Debian DSA-4885-1 : netty - security update

Multiple security issues were discovered in Netty, a Java NIO client/server framework, which could result in HTTP request smuggling, denial of service or information disclosure. C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were extracted from Debian...

[SECURITY] [DSA 4885-1] netty security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4885-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff April 05, 2021 https://www.debian.org/security/faq -...

http2smugl: HTTP2 request smuggling security testing tool

HTTP/2 become the standard defacto for the modern web and causes new application security risks. The HTTP2 request smuggling is one of a few HTTP/2 vulnerabilities with the high severity that raised last year. In this post, we will describe it in detail and suggest an open-source tool http2smugl...

Security Bulletin: Multiple vulnerabilities in Node.js affect IBM InfoSphere Information Server

Summary Muiltiple vulnerabilities in Node.js that is used by IBM InfoSphere Information Server were addressed. Vulnerability Details CVEID: CVE-2021-22884 DESCRIPTION: Node.js is vulnerable to a denial of service, caused by an error when the allowlist includes "localhost6". By controlling the...

netty: possible request smuggling in HTTP/2 due missing validation

In Netty io.netty:netty-codec-http2 before version 4.1.60.Final there is a vulnerability that enables request smuggling. If a Content-Length header is present in the original HTTP/2 request, the field is not validated by Http2MultiplexHandler as it is propagated up. This is fine as long as the...

CVE-2021-21409

A flaw was found in Netty. There is an issue where the content-length header is not validated correctly if the request uses a single Http2HeaderFrame with the endstream set to true. This flaw leads to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. The...

DEBIAN-CVE-2021-21409

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty io.netty:netty-codec-http2 before version 4.1.61.Final there is a vulnerability that enables request smuggling. The...

UBUNTU-CVE-2021-21409

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty io.netty:netty-codec-http2 before version 4.1.61.Final there is a vulnerability that enables request smuggling. The...

CVE-2021-21409

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty io.netty:netty-codec-http2 before version 4.1.61.Final there is a vulnerability that enables request smuggling. The...

Design/Logic Flaw

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty io.netty:netty-codec-http2 before version 4.1.61.Final there is a vulnerability that enables request smuggling. The...

CVE-2021-21409

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty io.netty:netty-codec-http2 before version 4.1.61.Final there is a vulnerability that enables request smuggling. The...

Possible request smuggling in HTTP/2 due missing validation of content-length

Impact The content-length header is not correctly validated if the request only use a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1 This is a followup of...

GHSA-F256-J965-7F32 Possible request smuggling in HTTP/2 due missing validation of content-length

Impact The content-length header is not correctly validated if the request only use a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1 This is a followup of...

CVE-2021-21409

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty io.netty:netty-codec-http2 before version 4.1.61.Final there is a vulnerability that enables request smuggling. The...

CVE-2021-21409

The CVE concerns Netty’s HTTP/2 codec (io.netty:netty-codec-http2) where, before version 4.1.61.Final, a Content-Length check can be bypassed when a single Http2HeaderFrame with endStream set to true is used. This enables HTTP request smuggling if the request is proxied and translated to HTTP/1.1...

CVE-2021-21409 Possible request smuggling in HTTP/2 due missing validation of content-length

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty io.netty:netty-codec-http2 before version 4.1.61.Final there is a vulnerability that enables request smuggling. The...

Low: Red Hat Security Advisory: tomcat security update

An update for tomcat is now available for Red Hat Enterprise Linux 7.7 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling

A flaw was found in Apache Tomcat. The HTTP header parsing code used an approach to end-of-line EOL parsing that allowed some invalid HTTP headers to be parsed as valid. This led to the possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Squid vulnerabilities (USN-4895-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4895-1 advisory. Alex Rousskov and Amit Klein discovered that Squid incorrectly handled certain Content-Length headers. A remote attacker could...