CVE-2009-4936 in Small Pirate
Summary
by MITRE
Multiple SQL injection vulnerabilities in Small Pirate (SPirate) 2.1 allow remote attackers to execute arbitrary SQL commands via (1) the id parameter to the default URI in an rss .xml action, or the id parameter to (2) pag1.php, (3) pag1-guest.php, (4) rss-comment_post.php (aka rss-coment_post.php), or (5) rss-pic-comment.php.
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Analysis
by VulDB Data Team • 08/21/2025
The CVE-2009-4936 vulnerability represents a critical SQL injection flaw affecting Small Pirate version 2.1, a content management system that was widely used for managing web content and user interactions. This vulnerability exposes the application to remote code execution attacks through multiple entry points, making it particularly dangerous for web applications that rely on user input for database queries. The vulnerability stems from inadequate input validation and sanitization within the application's core components, specifically targeting parameters that handle user-supplied data in database operations. The affected parameters include the id parameter across several PHP scripts including rss.xml, pag1.php, pag1-guest.php, rss-comment_post.php, and rss-pic-comment.php, all of which process user input without proper sanitization mechanisms.
The technical implementation of this vulnerability involves the direct concatenation of user-supplied input into SQL query strings without appropriate escaping or parameterization. When an attacker submits malicious input through any of these vulnerable parameters, the application fails to validate or sanitize the input before incorporating it into database queries. This allows attackers to inject arbitrary SQL commands that execute within the database context, potentially leading to complete system compromise. The vulnerability manifests in the application's handling of RSS feeds and user comment systems, where the id parameter is used to retrieve specific records from the database. Attackers can exploit this by crafting malicious payloads that manipulate the SQL query structure to extract sensitive data, modify database contents, or even execute system commands on the underlying server. The flaw directly maps to CWE-89, which specifically addresses SQL injection vulnerabilities, and represents a classic example of insecure data handling practices in web applications.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with comprehensive access to the application's backend database infrastructure. Successful exploitation could result in unauthorized data modification, complete database compromise, and potential lateral movement within network environments where the vulnerable application resides. Attackers could extract user credentials, personal information, and application configuration details, while also potentially gaining the ability to modify or delete content. The vulnerability affects multiple endpoints within the application, increasing the attack surface and providing multiple vectors for exploitation. From an attacker perspective, the availability of multiple vulnerable parameters increases the likelihood of successful exploitation, as different attack scenarios can be attempted until one succeeds. The vulnerability also presents challenges for network defenders, as it requires monitoring across multiple application components rather than focusing on a single point of failure, and can be particularly difficult to detect through standard security scanning tools due to the variety of attack vectors.
Mitigation strategies for CVE-2009-4936 should prioritize immediate patching of the vulnerable Small Pirate application to the latest available version that addresses these SQL injection flaws. Organizations should implement proper input validation and sanitization mechanisms across all user-supplied data, particularly for parameters that interact with database operations. The implementation of prepared statements or parameterized queries should be mandatory for all database interactions, eliminating the possibility of SQL injection through direct input concatenation. Network segmentation and access controls should be enforced to limit the potential impact of successful exploitation, while comprehensive logging and monitoring systems should be deployed to detect anomalous database query patterns. Security headers and web application firewalls should be configured to filter malicious input patterns, and regular security assessments should be conducted to identify similar vulnerabilities in other applications. Additionally, implementing the principle of least privilege for database accounts used by the application can minimize the potential damage from successful exploitation, as database accounts should only have the minimum required permissions to perform their intended functions. The vulnerability also highlights the importance of maintaining up-to-date security practices and the necessity of regular security training for development teams to prevent similar issues in future application development cycles.