CVE-2009-2781 in Arab
Summary
by MITRE
SQL injection vulnerability in forum.php in Arab Portal 2.x, when magic_quotes_gpc is disabled, allows remote authenticated users to execute arbitrary SQL commands via the qc parameter in an addcomment action, a different vector than CVE-2006-1666.
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Analysis
by VulDB Data Team • 12/07/2024
The vulnerability identified as CVE-2009-2781 represents a critical SQL injection flaw within the Arab Portal 2.x content management system that specifically targets the forum.php component. This vulnerability arises when the PHP configuration parameter magic_quotes_gpc is disabled, creating an environment where malicious input can bypass standard sanitization mechanisms. The flaw is particularly concerning because it allows authenticated users to exploit a specific code path through the qc parameter during an addcomment action, making it distinct from previously known vulnerabilities such as CVE-2006-1666 that targeted different vectors within the same application. The attack surface is expanded by the fact that this vulnerability requires only authenticated access, meaning that users who have established valid credentials within the system can leverage this weakness to gain unauthorized access to underlying database resources.
The technical implementation of this SQL injection vulnerability occurs through the improper handling of user-supplied input within the forum.php script. When an authenticated user submits a comment through the addcomment action, the qc parameter is directly incorporated into SQL query construction without adequate input validation or parameterization. This design flaw enables attackers to inject malicious SQL code that gets executed within the database context, potentially allowing for data extraction, modification, or deletion operations. The vulnerability specifically exploits the absence of proper input sanitization when magic_quotes_gpc is disabled, which typically would provide automatic escaping of special characters in GET, POST, and COOKIE data. Without this protection mechanism, attackers can craft payloads that manipulate the SQL query structure to achieve unauthorized database access.
The operational impact of this vulnerability extends beyond simple data theft, as authenticated users with malicious intent can leverage this weakness to perform a wide range of database operations. Attackers can potentially extract sensitive user information, modify forum content, escalate privileges within the application, or even gain access to other system resources that may share the same database infrastructure. The authenticated nature of the attack means that the vulnerability can be exploited by insiders or compromised accounts, making detection more challenging as the malicious activity appears to originate from legitimate user sessions. Additionally, the persistence of this vulnerability in the forum.php component suggests that the entire comment management system is at risk, potentially affecting thousands of user interactions and forum threads that rely on this functionality.
Mitigation strategies for CVE-2009-2781 should focus on implementing proper input validation and parameterized queries throughout the application codebase. The most effective immediate solution involves ensuring that all user-supplied input, particularly the qc parameter in this case, is properly sanitized and validated before being incorporated into database queries. This approach aligns with CWE-89, which specifically addresses SQL injection vulnerabilities, and follows the fundamental principle of using prepared statements or parameterized queries to separate SQL code from data. Organizations should also consider implementing web application firewalls that can detect and block suspicious SQL injection patterns, while monitoring for unusual database access patterns that might indicate exploitation attempts. The long-term solution requires updating to patched versions of Arab Portal 2.x or migrating to more secure, modern forum software that implements proper input sanitization and follows current security best practices. Additionally, system administrators should ensure that magic_quotes_gpc is properly configured or implement application-level protections to prevent similar vulnerabilities from occurring in other components of the system.