CVE-2009-0275 in phoSheezy
Summary
by MITRE
Static code injection vulnerability in admin.php in Ryneezy phoSheezy 0.2 allows remote authenticated administrators to inject arbitrary PHP code into config/header via the header parameter. NOTE: this can be exploited by unauthenticated attackers by leveraging CVE-2009-0250. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 07/29/2025
The CVE-2009-0275 vulnerability represents a critical static code injection flaw within the Ryneezy phoSheezy 0.2 content management system, specifically targeting the admin.php administrative interface. This vulnerability exists due to inadequate input validation and sanitization mechanisms within the application's parameter handling processes. The flaw manifests when the application processes the header parameter in the config/header file, allowing malicious code injection directly into the system's configuration files. The vulnerability's severity is amplified by its ability to be exploited by authenticated administrators, who possess elevated privileges within the system, making the potential impact significantly more dangerous than typical user-level exploits.
The technical implementation of this vulnerability stems from the application's failure to properly sanitize user-supplied input before incorporating it into system configuration files. When administrators interact with the admin.php interface and provide malicious input through the header parameter, the system directly embeds this unvalidated data into the header configuration file without appropriate security measures. This creates a persistent code injection vector that can be leveraged to execute arbitrary PHP code within the application's execution context. The vulnerability operates under the broader category of code injection attacks, specifically aligning with CWE-94 which defines the weakness of executing arbitrary code or commands. The flaw represents a direct violation of secure coding practices and demonstrates the critical importance of input validation in web application security.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to establish persistent backdoors within the compromised system. Once successfully exploited, the injected PHP code can be used to modify system configurations, create new administrative accounts, exfiltrate sensitive data, or even establish reverse shells for continued access. The vulnerability's exploitation potential is particularly concerning because it can be leveraged by unauthenticated attackers through the chained exploitation of CVE-2009-0250, which likely provides initial access or privilege escalation capabilities. This chaining of vulnerabilities demonstrates how seemingly minor flaws can create cascading security issues within web applications, making the overall security posture of the system significantly weaker than initially apparent. The impact on system integrity, confidentiality, and availability can be severe, potentially leading to complete system compromise and data breaches.
Mitigation strategies for CVE-2009-0275 must address both immediate remediation and long-term architectural improvements to prevent similar vulnerabilities. The primary fix involves implementing comprehensive input validation and sanitization mechanisms that ensure all user-supplied data is properly filtered before being processed or stored within system configuration files. This includes implementing proper escaping mechanisms for special characters, utilizing parameterized queries where applicable, and employing secure coding practices that prevent direct code injection. Organizations should also implement principle of least privilege access controls, ensuring that administrative functions require strong authentication mechanisms and that configuration file modifications are protected through robust access controls. Additionally, regular security auditing and penetration testing should be conducted to identify and remediate similar vulnerabilities within the application's codebase. The implementation of web application firewalls and runtime application self-protection mechanisms can provide additional layers of defense against such exploitation attempts. Organizations should also maintain comprehensive backup and recovery procedures to ensure rapid restoration of compromised systems and implement monitoring solutions to detect anomalous behavior that may indicate successful exploitation attempts. These measures align with established security frameworks and best practices for preventing code injection vulnerabilities and maintaining overall system security posture.