- Nginx alias traversal. conf file or in a separate configuration file. A server is assumed to be vulnerable if a request to an existing path like https://example. com/static. This extension detects NGINX alias traversal due to misconfiguration. env (Path Traversal). Why is > > > `. com/. Burp extension to detect alias traversal via NGINX misconfiguration at scale. Aug 14, 2022 · I recently came across an nginx server that had a vulnerable alias configuration which allowed anyone to read files outside the intended directory. - PortSwigger/nginx-alias-traversal Burp extension to detect alias traversal via NGINX misconfiguration at scale. NGINX is a web server which can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. The attack is based on specific conditions within the Nginx configuration: The location directive lacks a trailing slash in its path. But today we will focus specifically on a security misconfiguration flaw in the alias directive, which defines an alternative path for the same specified route. /app/config. So having an nginx configuration with something such as root / and a response from the web server with X-Accel-Redirect: . " string is a valid path component and there are no > > reasons why it shouldn't be allowed - there might be such files > > and/or directories on the disk. - stark0de/nginxpwner Jun 4, 2024 · Nginx Alias Path Traversal Reward: $1000 Overview of the Vulnerability Path traversal uses a server misconfiguration to access hidden files and directories that are stored on the served web … Jan 26, 2025 · At the BlackHat 2018 conference, Orange Tsai revealed a technique for exploiting URL parser misconfigurations. In the following post I will describe the misconfiguration and provide demo files so that you can experiment with it yourself. It is often used in conjunction with the alias directive to map URLs to specific file locations on the server. The NGINX alias directive defines a replacement for the specified location. Jan 8, 2023 · 前言 一开始看到alias都不知道是什么，我们先来学习一下 Nginx以其高性能著称，常用作前端反向代理服务器。同时nginx也是一个高性能的静态文件服务器。通常都会把应用的静态文件使用nginx处理。 配置nginx的静态文件有两个指令，一个root，另一个就是alias。 配置用法 先看root Burp extension to detect alias traversal via NGINX misconfiguration at scale. . Requires Burp Professional. the directives can be defined in the nginx. This can include sensitive operating files, code and data that runs the application, or in some cases, user credentials. / that is normalized to http://apiserver/. py` appended to the alias `/data/w3/images/` in this case > > > without nginx throwing an exception as this is a blatant path traversal > > > attack? > > > > The "i. There is a vulnerability in Nginx that can be caused by misconfiguration. An alias directive is present within the location context, and it concludes with a slash. The technique is based on Orange Tsai's BlackHat USA 2018 Presentation. Dec 27, 2021 · This misconfiguration can be exploited by requesting http://server/api. - shiblisec/nginx-alias-traversal A tool to discover and exploit Nginx alias traversal misconfiguration, the tool can bruteforce the URL path recursively to find out hidden files and directories. Nginxpwner is a simple tool to look for common Nginx misconfigurations and vulnerabilities. env will make nginx sends the content of /. / returns the same response as https://example. Understanding the Impact: In a vulnerable scenario, Nginx Jun 4, 2024 · Posted on Jun 4, 2024 Nginx Alias Path Traversal Path Traversal Overview of the Vulnerability Path traversal uses a server misconfiguration to access hidden files and directories that are stored on the served web application. A tool to discover and exploit Nginx alias traversal misconfiguration, the tool can bruteforce the URL path recursively to find out hidden files and directories. Jan 19, 2025 · Therefore, as hackers, we have an obligation to become familiar with this technology and explore its particularities. / which will result in Nginx requesting the URL http://apiserver/v1/. Apr 2, 2024 · To effectively mitigate the Off-By-One Slash Vulnerability in NGINX configurations, adhere to the following best practices: Always ensure trailing slashes are appended in the alias directive. One of them is alias traversal. uqmldsgg toj thyme3c ju9vf kvl lw ab lv7pinc td2w efh0
