Netpower NPFW Local File Inclusion Scanner

Netpower NPFW is a firewall solution used by businesses and organizations to protect their network infrastructure from unauthorized access and various cyber threats. This software is deployed in environments that require advanced security features to monitor network traffic and defend against intrusion attempts. It is commonly used by IT professionals responsible for maintaining network security in both small and large enterprises. The primary purpose of Netpower NPFW is to ensure the confidentiality, integrity, and availability of network resources. By detecting and preventing malicious activities, it helps maintain the overall stability of the network. It is an essential tool for organizations looking to bolster their cyber defenses against evolving threats.

Local File Inclusion (LFI) is a type of vulnerability that allows attackers to include files from the server in the web application's response. It occurs when a web application dynamically includes files based on user input without proper validation or sanitization. This vulnerability can lead to unauthorized disclosure of sensitive files, such as configuration files, passwords, and other critical data stored on the server. In worst-case scenarios, it can even lead to remote code execution if the attacker manages to include a file containing executable code. LFI vulnerabilities are often exploited by attackers to gain access to confidential information and escalate their privileges within the target system. Due to their critical nature, they pose a significant risk to the security of the affected systems.

The vulnerability in Netpower NPFW is found in the file inclusion mechanism, which fails to adequately validate user input before processing it. Specifically, the vulnerable endpoint is `/direct/polling/CommandsPolling.php`, and the parameter `filename` is susceptible to injection attacks. An attacker can manipulate this parameter to specify arbitrary file paths that the application will include and expose. The vulnerability is triggered when the application reads the specified file and includes its contents in the HTTP response. The lack of input validation creates an attack vector for unauthorized access to sensitive files, including system password files like `/etc/passwd`. This vulnerability is primarily exploitable via crafted HTTP requests targeting the flawed endpoint, potentially resulting in severe security breaches.

When exploited, this vulnerability could lead to serious consequences for the affected organization. Attackers may gain access to confidential and sensitive information stored on the server, such as user credentials, configuration files, and other private data. Such access can facilitate further attacks, such as privilege escalation or lateral movement within the network. Additionally, the exposure of sensitive information can lead to data breaches, legal liabilities, and reputational damage for the affected entity. In severe cases, attackers may be able to execute arbitrary code on the server, leading to full system compromise. Therefore, addressing this vulnerability is paramount to safeguard against potential exploitation and its dire consequences.

REFERENCES

• https://forum.butian.net/article/241