CVE-2023-46818 Scanner

ISPConfig is a widely-used open-source hosting control panel that allows for the management of multiple servers. It is primarily used by web hosting service providers and webmasters to manage their web accounts and server configurations. This software facilitates various server management tasks, including web hosting, domain management, DNS, and email servers, all through a simple web interface. Its user-friendly design makes it popular for both seasoned professionals and novice users attempting to manage web hosting services. With multiple language support and a flexible configuration, ISPConfig has a broad user base seeking an efficient and cost-effective hosting management solution. Additionally, its modular architecture is appreciated for adapting to various hosting scenarios and requirements.

The vulnerability CVE-2023-46818 is a Code Injection flaw, identified in ISPConfig before version 3.2.11p1, specifically within the language file editor component. This security issue can be triggered by an admin when the admin_allow_langedit option is enabled, allowing PHP code to be injected into the language files. Such vulnerabilities occur when user input is not properly sanitized, leading to potential malicious code execution when the file is interpreted. The flaw can significantly compromise server security, granting unauthorized users the ability to execute arbitrary PHP code on the affected systems. This vulnerability poses a substantial risk, as it could lead to the unauthorized access and manipulation of sensitive web server data.

The technical details of this vulnerability emphasize the lack of proper input validation within the language file editor endpoint, potentially allowing PHP code execution. The vulnerability lies in the ability of administrators, with admin_allow_langedit enabled, to edit language files using injectable pay loaders permitting code execution. This involves the submission of manipulated data to the 'lang_file' parameter, bypassing security validations. Attack sequences often include crafting specially formatted POST requests to the language editing URL, abusing admin privileges to upload malicious scripts. Exploitation techniques rely on the successful manipulation of session data to maintain persistence while executing unauthorized commands through the injected code.

Exploitation of this vulnerability could have disastrous effects, such as remote command execution, unauthorized file access, and full server compromise. Attackers could modify server configurations or deploy further payloads to amplify system infiltration. In the worst-case scenario, this could lead to complete data manipulation, theft, or destruction, jeopardizing the security and trustworthiness of hosted services. Furthermore, successful exploitation might result in service disruption, loss of functionality, or degradation of user experiences, significantly impacting businesses relying on the affected ISPConfig versions.

REFERENCES

• https://www.ispconfig.org/blog/ispconfig-3-2-11p1-released/
• http://packetstormsecurity.com/files/176126/ISPConfig-3.2.11-PHP-Code-Injection.html
• http://seclists.org/fulldisclosure/2023/Dec/2
• https://nvd.nist.gov/vuln/detail/CVE-2023-46818