CVE-2009-4807 in PHP Article Publisher
Summary
by MITRE
Multiple SQL injection vulnerabilities in Graugon PHP Article Publisher 1.0 allow remote attackers to execute arbitrary SQL commands via the (1) c parameter to index.php and the (2) id parameter to view.php.
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Analysis
by VulDB Data Team • 11/24/2024
The CVE-2009-4807 vulnerability represents a critical security flaw in Graugon PHP Article Publisher version 1.0, specifically targeting SQL injection attack vectors that enable remote code execution. This vulnerability affects two distinct input parameters within the application's web interface, creating multiple attack surfaces for malicious actors seeking to compromise the system. The flaw exists in the application's handling of user-supplied input without proper sanitization or validation, allowing attackers to inject malicious SQL commands directly into the database query execution process.
The technical exploitation of this vulnerability occurs through two primary attack vectors. The first vector involves the 'c' parameter in the index.php file where user input is directly incorporated into SQL queries without adequate input filtering or parameterized query construction. The second vector targets the 'id' parameter in view.php, which suffers from identical input handling issues. Both vulnerabilities stem from the application's failure to implement proper input validation and sanitization mechanisms, creating opportunities for attackers to manipulate database queries through crafted malicious input strings. This weakness aligns with CWE-89, which specifically addresses SQL injection vulnerabilities where untrusted data is incorporated into SQL commands without proper escaping or parameterization.
The operational impact of this vulnerability extends beyond simple data theft, as successful exploitation allows attackers to execute arbitrary SQL commands on the underlying database server. This capability enables attackers to perform unauthorized data manipulation, including data deletion, modification, or extraction of sensitive information. The remote nature of the attack means that exploitation can occur from any location without requiring physical access to the server, making the vulnerability particularly dangerous for web applications. Attackers could potentially escalate privileges, gain access to administrative accounts, or even compromise the entire database server through these injection points. The vulnerability also poses risks to data integrity and confidentiality, as malicious actors could modify or destroy critical application data.
Mitigation strategies for CVE-2009-4807 should focus on implementing proper input validation and parameterized query construction throughout the application codebase. The most effective remediation involves converting all dynamic SQL queries to use parameterized or prepared statements, ensuring that user input is never directly concatenated into SQL commands. Additionally, comprehensive input sanitization should be implemented at all entry points, with strict validation rules applied to ensure that only expected data types and formats are accepted. Network-level protections such as web application firewalls and intrusion detection systems can provide additional layers of defense, though these should not replace proper code-level fixes. Organizations should also implement regular security code reviews and penetration testing to identify similar vulnerabilities in other applications. The remediation approach aligns with ATT&CK technique T1071.004 for application layer protocol manipulation and T1190 for exploitation of remote services, emphasizing the need for both defensive and proactive security measures to protect against such vulnerabilities.