CVE-2007-2899 in NavBoard
Summary
by MITRE
Direct static code injection vulnerability in admin_config.php in NavBoard 2.6.0 allows remote attackers to inject arbitrary PHP code into data/config.php via multiple parameters, as demonstrated via the threadperpage parameter in an editconfig action.
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Analysis
by VulDB Data Team • 09/18/2024
The vulnerability identified as CVE-2007-2899 represents a critical direct static code injection flaw within NavBoard version 2.6.0, specifically affecting the admin_config.php component. This issue enables remote attackers to execute arbitrary PHP code by manipulating multiple parameters within the application's administrative interface. The vulnerability manifests through the threadperpage parameter during an editconfig action, creating a pathway for malicious code injection that can fundamentally compromise the application's integrity and security posture.
This vulnerability falls under the category of code injection attacks and is classified as a direct static code injection, which represents a variant of the more general CWE-94 weakness related to insufficient control of generation of code. The flaw occurs because the application fails to properly validate or sanitize user input before incorporating it into configuration files, specifically data/config.php. The injection takes place during the administrative configuration process where user-supplied parameters are directly concatenated into PHP code without adequate sanitization mechanisms, creating an environment where attacker-controlled input can be executed as legitimate code by the web server.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with complete administrative control over the affected system. Once exploited, the attacker can execute arbitrary PHP code with the privileges of the web server, potentially leading to full system compromise, data exfiltration, or the establishment of persistent backdoors. The vulnerability affects the application's configuration management system, which typically requires elevated privileges to modify, making the attack vector particularly dangerous. The injection occurs in the data/config.php file, which likely contains critical application settings and potentially sensitive configuration data that could be manipulated or extracted by an attacker.
The attack surface for this vulnerability is primarily through the administrative interface of NavBoard, specifically targeting the editconfig functionality where multiple parameters can be manipulated. The threadperpage parameter serves as the primary injection point, but the vulnerability's design suggests that other parameters within the same administrative function may also be susceptible to similar exploitation. This type of vulnerability aligns with ATT&CK technique T1059.007 for PHP code injection and T1078 for valid accounts, as the attack requires administrative access to leverage the injection capability. The vulnerability demonstrates poor input validation and inadequate sanitization practices, representing a fundamental flaw in the application's security architecture that violates basic secure coding principles.
Mitigation strategies for CVE-2007-2899 should focus on implementing proper input validation and sanitization mechanisms throughout the application's administrative functions. The most effective remediation involves validating all user-supplied input against strict whitelists and ensuring that any configuration data is properly escaped or encoded before being written to configuration files. Organizations should also implement proper access controls and authentication mechanisms to limit administrative access to trusted users only, as the vulnerability requires administrative privileges to exploit. Additionally, regular security audits and code reviews should be conducted to identify similar injection vulnerabilities in other parts of the application. The implementation of web application firewalls and input filtering mechanisms can provide additional layers of protection, while keeping the application updated with the latest security patches remains essential for preventing exploitation of known vulnerabilities.