CVE-2007-2001 in Crea-Book
Summary
by MITRE
Multiple direct static code injection vulnerabilities in admin/configurer2.php in Crea-Book 1.0 and earlier allow remote authenticated administrators to execute arbitrary PHP code via the "Fond de la page" (background color) field and other unspecified fields, which injects into config.inc.php3.
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Analysis
by VulDB Data Team • 09/04/2024
The vulnerability identified as CVE-2007-2001 represents a critical security flaw in Crea-Book version 1.0 and earlier, specifically targeting the admin/configurer2.php component. This issue constitutes a direct static code injection vulnerability that fundamentally compromises the application's security model by allowing authenticated administrative users to inject malicious PHP code into the system. The vulnerability is particularly dangerous because it operates within the administrative interface, where users already possess elevated privileges, making the attack vector more potent and harder to detect. The flaw resides in the improper sanitization of user input within the configuration management system, specifically affecting the "Fond de la page" (background color) field and other unspecified fields that ultimately get written to the config.inc.php3 file.
The technical exploitation of this vulnerability occurs through a combination of code injection and configuration file manipulation. When an authenticated administrator accesses the configuration interface and inputs malicious code into the designated fields, the application fails to properly validate or escape the input before writing it to the config.inc.php3 file. This allows attackers to inject arbitrary PHP code that gets executed within the application's context, potentially enabling full system compromise. The vulnerability directly maps to CWE-94, which describes "Improper Control of Generation of Code ('Code Injection')" and aligns with ATT&CK technique T1059.007 for PHP code injection. The injection occurs at the point where user-supplied data is directly incorporated into executable code without proper sanitization, creating an environment where malicious payloads can be seamlessly integrated into the application's runtime execution flow.
The operational impact of this vulnerability extends far beyond simple code execution, as it provides attackers with the capability to perform complete system compromise through the administrative interface. Since the vulnerability requires only authenticated access, it can be exploited by insiders or attackers who have already gained administrative credentials through other means. The injected code can be used to establish persistent backdoors, exfiltrate sensitive data, modify application behavior, or escalate privileges further within the system. This vulnerability effectively undermines the principle of least privilege and can lead to complete system takeover, as the attacker can execute any PHP code that the application's web server process is authorized to run. The configuration file injection aspect means that the malicious code becomes part of the application's permanent configuration, ensuring persistence across system restarts and making detection more challenging for security monitoring systems.
Mitigation strategies for CVE-2007-2001 must address both the immediate vulnerability and the underlying architectural issues that permit code injection. The primary recommendation involves implementing strict input validation and sanitization mechanisms for all user-supplied data within administrative interfaces, particularly focusing on configuration management components. Organizations should enforce proper escaping of special characters and implement whitelisting approaches for configuration values, ensuring that only predetermined safe values can be accepted. Additionally, the application should be updated to a version that properly sanitizes input fields before writing to configuration files, and the config.inc.php3 file should be protected with appropriate file permissions to prevent unauthorized modification. Security hardening measures should include regular code reviews focusing on input validation, implementation of secure coding practices, and deployment of web application firewalls to detect and prevent injection attempts. The vulnerability also highlights the importance of principle of least privilege implementation, where administrative functions should be restricted to necessary operations only, and all configuration changes should be logged and monitored for suspicious activities.