CVE-2024-58279: HIGH Severity Remote Code Execution in appRain CMF | Secably CVE Database

Summary

CVE-2024-58279 is a high-severity vulnerability affecting appRain CMF 4.0.5. It allows authenticated administrative users to achieve remote code execution by uploading malicious PHP files through the filemanager upload endpoint, ultimately leading to potential system compromise.

Technical Details

CVE-2024-58279 stems from insufficient input validation within the filemanager upload functionality of appRain CMF 4.0.5. An authenticated user with administrative privileges can bypass existing file type restrictions and upload a specially crafted PHP file. This file, once uploaded, can be accessed and executed by the web server, granting the attacker the ability to execute arbitrary commands on the server. The vulnerability lies in the lack of proper sanitization and validation of uploaded files, allowing for the injection of malicious code.

Specifically, the filemanager component fails to adequately check the file extension and content of uploaded files. An attacker can craft a PHP file containing malicious code, such as a web shell, and upload it to the server. Once uploaded, the attacker can access the file through a web browser, triggering the execution of the embedded code. This allows the attacker to gain control of the server and perform actions such as stealing sensitive data, modifying system files, or launching further attacks.

The successful exploitation of this vulnerability requires valid administrative credentials. However, once authenticated, the attacker can easily leverage the file upload functionality to gain complete control of the affected system. The impact of this vulnerability is significant, as it can lead to a complete compromise of the server and the data it hosts.

Affected Products and Versions

appRain CMF 4.0.5

Impact Assessment

Successful exploitation of CVE-2024-58279 can have severe consequences, including:

Complete System Compromise: Attackers can gain full control of the affected server.
Data Breach: Sensitive data stored on the server can be accessed and stolen.
Malware Deployment: The compromised server can be used to host and distribute malware.
Denial of Service: The server can be rendered unavailable to legitimate users.
Lateral Movement: The attacker can use the compromised server as a stepping stone to access other systems on the network.

Remediation

Immediate Actions

Restrict Access: Immediately restrict access to the filemanager upload endpoint to only trusted administrators.
Monitor System Logs: Monitor system logs for suspicious activity, such as unauthorized file uploads or attempts to access unusual files.
Implement Web Application Firewall (WAF): Deploy a WAF to filter malicious requests and prevent exploitation of the vulnerability.

Long-term Solutions

Upgrade to a patched version: Check for available patches or updates from appRain. If a patched version is available, upgrade immediately.
Input Validation: Implement robust input validation and sanitization for all file uploads, including file extension checks, content type verification, and size limits.
Principle of Least Privilege: Ensure that administrative users only have the necessary privileges to perform their tasks.

References

Detection & Scanning

This vulnerability can be detected by analyzing web server logs for suspicious file uploads and access attempts to unusual files. Security scanners can also be used to identify vulnerable installations of appRain CMF 4.0.5.

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