FreePBX Administration GUI is Vulnerable to Authenticated Command Injection

Vulnerability Description

FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. In versions 17.0.2.36 and above before 17.0.3, the filestore module within the Administrative interface is vulnerable to a post-authentication command injection by an authenticated known user via the testconnection -> check_ssh_connect() function. An attacker can leverage this vulnerability to obtain remote access to the system as an asterisk user. This issue is fixed in version 17.0.3.

References

• https://github.com/FreePBX/security-reporting/security/advisories/GHSA-vm9p-46mv-5xvw
• https://github.com/FreePBX/filestore/blob/f0e3983059271efd80b483ec823310ef19a59013/drivers/SSH/testconnection.php#L2
• https://www.freepbx.org/watch-what-we-do-with-security-fixes-%f0%9f%91%80