CVE-2025-64328 is a high-severity vulnerability identified in the Sangoma FreePBX Endpoint Manager, specifically affecting versions 17.0.2.36 and above, prior to 17.0.3. This vulnerability allows for post-authentication command injection via the testconnection -> check_ssh_connect() function, enabling an authenticated user to execute arbitrary commands. Attackers may leverage this vulnerability to obtain unauthorized remote access to the system as an asterisk user.
The CVSS score for this vulnerability is 8.6, indicating a high severity level due to its potential impact on confidentiality, integrity, and availability. This vulnerability is characterized by a network attack vector and low attack complexity, requiring high privileges for exploitation. Organizations utilizing affected versions of FreePBX must prioritize patching to mitigate the risks associated with this vulnerability.
Given the potential for significant impact, organizations should address this vulnerability immediately. The urgency is underscored by its inclusion in the Known Exploited Vulnerabilities (KEV) catalog, indicating that it is actively being targeted by attackers. The patch for this vulnerability is available in version 17.0.3.
Organizations should evaluate their exposure to this vulnerability and implement the necessary updates to protect their systems and data from potential exploitation.
Vulnerability Details
The vulnerability is detailed in the CVE description, which states: '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.'
The vulnerability falls under the CWE classification of 'CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').' This further highlights the importance of ensuring proper input validation and sanitization in systems to prevent such vulnerabilities.
Organizations are encouraged to assess their current FreePBX systems and update to the latest version to remediate this vulnerability.
Technical Analysis
The root cause of this vulnerability is a command injection flaw within the filestore module. The attack vector is network-based, which means that an attacker can exploit this vulnerability remotely, provided they have authenticated access to the system. The complexity of the attack is low, as it requires high privileges but does not necessitate any user interaction.
In terms of impact, the vulnerability presents high risks to confidentiality, integrity, and availability. Successful exploitation can lead to unauthorized remote access, allowing attackers to execute arbitrary commands on the system.
Risk & Impact Analysis
The risk to organizations includes significant exposure to unauthorized access and potential control over FreePBX systems. This could lead to data breaches, service interruptions, and other forms of compromise that could significantly affect business operations.
With the CVSS score of 8.6, it is crucial for organizations to recognize the urgency of addressing this vulnerability. The known exploitation status further emphasizes the need for immediate action, as attackers may already be targeting this weakness.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions include Sangoma FreePBX Endpoint Manager, specifically versions 17.0.2.36 and above before 17.0.3. Organizations should ensure that they are running the latest version to mitigate this vulnerability.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply the vendor-released patch, which addresses the command injection flaw. Users must upgrade to version 17.0.3 or later. If patching is not immediately possible, organizations should consider implementing additional security measures such as restricting access to the administrative interface and monitoring for unusual activity.
Further guidance can be found by consulting the vendor's advisory and related documentation to ensure comprehensive remediation.
Detection Guidance
Organizations should monitor logs for any suspicious command executions and SSH connection attempts. Behavioral anomalies, such as unexpected administrative actions or unauthorized access, should also be flagged for investigation.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-64328 lies in its demonstration of how command injection vulnerabilities can be exploited in systems with elevated privileges. This incident underscores the need for stringent input validation and effective access controls within telephony systems.
Security teams should note that vulnerabilities of this nature are often targeted in active campaigns. Regular security assessments, such as penetration testing and vulnerability management programs, can help in identifying and mitigating these risks.
Organizations are advised to incorporate continuous monitoring and security updates to adapt to emerging threats, thereby strengthening their overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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