Design/Logic Flaw

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. In version 2.3.0-beta2 and prior, when h2o is configured to listen to multiple addresses or ports with each of them using different backend servers managed by multiple entities, a malicious backend entity that also has the...

Qlik Sense HTTP Tunneling Vulnerability

Qlik Sense contains an HTTP tunneling vulnerability that allows an attacker to escalate privileges and execute HTTP requests on the backend server hosting the software...

haproxy: Proxy forwards malformed empty Content-Length headers

A flaw was found in HAProxy. Empty Content-Length headers are forwarded, which could cause an HTTP/1 server behind it to interpret the payload as an extra request. This may render the HTTP/1 server vulnerable to attacks in some uncommon cases...

GHSA-FVHJ-4QFH-Q2HM Traefik incorrectly processes fragment in the URL, leads to Authorization Bypass

Summary When a request is sent to Traefik with a URL fragment, Traefik automatically URL encodes and forwards the fragment to the backend server. This violates the RFC because in the origin-form the URL should only contain the absolute path and the query. When this is combined with another fronte...

Exploit for HTTP Request Smuggling in Apache Http_Server

CVE-2023-25690 Mô tả CVE-2023-25690: - Một vài cấu hình mod...

VulnCheck KEV: CVE-2023-48365

Qlik Sense contains an HTTP tunneling vulnerability that allows an attacker to escalate privileges and execute HTTP requests on the backend server hosting the software...

Input validation

Qlik Sense Enterprise for Windows before August 2023 Patch 2 allows unauthenticated remote code execution, aka QB-21683. Due to improper validation of HTTP headers, a remote attacker is able to elevate their privilege by tunneling HTTP requests, allowing them to execute HTTP requests on the backe...

CVE-2023-48365

Qlik Sense Enterprise for Windows before August 2023 Patch 2 allows unauthenticated remote code execution, aka QB-21683. Due to improper validation of HTTP headers, a remote attacker is able to elevate their privilege by tunneling HTTP requests, allowing them to execute HTTP requests on the backe...

CVE-2023-5516

Poorly constructed webap requests and URI components with special characters trigger unhandled errors and exceptions, disclosing information about the underlying technology and other sensitive information details. The website unintentionally reveals sensitive information including technical detai...

CVE-2023-5516

Poorly constructed webap requests and URI components with special characters trigger unhandled errors and exceptions, disclosing information about the underlying technology and other sensitive information details. The website unintentionally reveals sensitive information including technical detai...

Design/Logic Flaw

Poorly constructed webap requests and URI components with special characters trigger unhandled errors and exceptions, disclosing information about the underlying technology and other sensitive information details. The website unintentionally reveals sensitive information including technical detai...

CVE-2023-5516

Poorly constructed webap requests and URI components with special characters trigger unhandled errors and exceptions, disclosing information about the underlying technology and other sensitive information details. The website unintentionally reveals sensitive information including technical detai...

ldap test randomly fails through SSL_TCP Load Balancing Vserver on NetScaler

The customer configured ldap authentication through NetScaler SSLTCP LB Vserver for backend ldap server. Customer found ldap test fails randomly...

SSLVPN error "Websocket connection failed: Connection closed before receiving a handshake responser"

After VPN tunnel established to NetScaler gateway, user encounter access issue s to backend server with error message: "Websocket connection to 'ws:///ws/notification/site-msg/' failed: Connection closed before receiving a handshake responser"...

TCP option lost when traffic go through TCP type Load Balance(LB) Vserver

TCP option lost when traffic go through TCP type Load BalanceLB Vserver: 1. Clients send TCP syn to NetScaler with TCP option segment: 2. Backend Servers do not receive TCP handshake with TCP option segment from NetScaler:...

Unable to ping backend server from NetScaler with SNIP as source IP address

SNIP, NSIP and backend server are in the same subnet. Unable to ping backend from NetScaler with SNIP as source IP address, can ping backend with NSIP as source IP address...

CVE-2023-41265

An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch 10 and earlier, and August 2022 Patch 12 and earlier allows a remote attacker to elevate their privilege by tunnelin...

Cross site request forgery (csrf)

An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch 10 and earlier, and August 2022 Patch 12 and earlier allows a remote attacker to elevate their privilege by tunnelin...

CVE-2023-41265

An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch 10 and earlier, and August 2022 Patch 12 and earlier allows a remote attacker to elevate their privilege by tunnelin...

Enabling NetScaler to forward original client source IP to backend server

This guide outlines the various methods available to ensure that the backend server is equipped to collect the original client IP through the NetScaler. The focus of this article lies in configuring the NetScaler to effectively forward the original client source IP to the backend server...