CVE-2022-39986 Scanner

RaspAP is an open-source software solution that allows users to easily set up a wireless access point on Raspberry Pi devices, providing a web-based interface for managing Wi-Fi networking functions. It is widely used by hobbyists, educators, and professionals for creating Wi-Fi hotspots, offering features like SSID broadcasting, password management, and DHCP server configuration. RaspAP is praised for its simplicity and flexibility, enabling quick deployment of Wi-Fi networks for a variety of applications such as home automation, educational labs, and small office setups. The software is particularly popular among the Raspberry Pi community for its ability to leverage the compact and cost-effective nature of Raspberry Pi hardware. However, versions 2.8.0 through 2.8.7 contain a critical security vulnerability that poses a risk to the integrity and security of networks utilizing RaspAP.

The CVE-2022-39986 vulnerability in RaspAP versions 2.8.0 to 2.8.7 allows unauthenticated attackers to perform command injection attacks. This flaw is due to improper validation of user input in the cfg_id parameter within specific PHP files. Attackers can exploit this vulnerability to execute arbitrary commands on the server hosting RaspAP without needing authentication. Such a vulnerability exposes the system to remote code execution, leading to potential compromise of the system's confidentiality, integrity, and availability.

This command injection vulnerability is present in the /ajax/openvpn/activate_ovpncfg.php and /ajax/openvpn/del_ovpncfg.php files of RaspAP. By injecting malicious commands into the cfg_id parameter, attackers can manipulate the underlying operating system. Since there is no requirement for authentication to exploit this flaw, it presents a significant security risk. The vulnerability allows for a wide range of attacks, including but not limited to, accessing sensitive information, modifying system configurations, and disrupting service. The attack surface is further broadened due to the nature of RaspAP's typical deployment on networks.

The exploitation of CVE-2022-39986 can lead to complete system compromise. Attackers could gain unauthorized access to the system, execute malicious code, steal or alter sensitive data, install persistent backdoors, and potentially move laterally within the network. This vulnerability compromises the security of all devices connected to the RaspAP-managed Wi-Fi network, leading to a breach of confidentiality, integrity, and availability of network resources. The impact is particularly severe due to the unauthenticated nature of the attack, allowing anyone with network access to exploit the vulnerability.

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References

• https://packetstormsecurity.com/files/174190/RaspAP-2.8.7-Unauthenticated-Command-Injection.html
• https://nvd.nist.gov/vuln/detail/CVE-2022-39986
• https://medium.com/@ismael0x00/multiple-vulnerabilities-in-raspap-3c35e78809f2
• http://packetstormsecurity.com/files/174190/RaspAP-2.8.7-Unauthenticated-Command-Injection.html
• https://github.com/RaspAP/raspap-webgui/blob/master/ajax/openvpn/activate_ovpncfg.php