CVE-2009-2592 in GBook
Summary
by MITRE
SQL injection vulnerability in guestbook.php in PHPJunkYard GBook 1.6 allows remote attackers to execute arbitrary SQL commands via the mes_id parameter.
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Analysis
by VulDB Data Team • 12/07/2024
The vulnerability identified as CVE-2009-2592 represents a critical SQL injection flaw within the PHPJunkYard GBook 1.6 guestbook application. This vulnerability specifically affects the guestbook.php script where user input is improperly handled, creating an avenue for malicious actors to execute unauthorized database operations. The flaw manifests through the mes_id parameter which is directly incorporated into SQL queries without adequate sanitization or parameterization, making it susceptible to exploitation by remote attackers who can manipulate the application's database interactions.
This SQL injection vulnerability falls under the CWE-89 classification, which specifically addresses improper neutralization of special elements used in SQL commands. The technical implementation of this flaw demonstrates a classic case of insufficient input validation where the mes_id parameter from user-supplied HTTP requests is concatenated directly into SQL query strings. Attackers can exploit this by crafting malicious input that alters the intended SQL command structure, potentially allowing them to extract sensitive data, modify database records, or even gain administrative access to the underlying database system. The vulnerability exists because the application fails to implement proper input sanitization techniques or prepared statement usage, which are fundamental defensive measures against SQL injection attacks.
The operational impact of this vulnerability extends beyond simple data compromise, as it provides attackers with the capability to perform extensive database manipulation operations. Remote attackers can leverage this vulnerability to execute arbitrary SQL commands, potentially leading to complete database exposure, data theft, or service disruption. The attack surface is particularly concerning given that the vulnerability affects a web-based guestbook application that likely stores user comments, personal information, and other sensitive data. Successful exploitation could result in unauthorized access to user credentials, personal information, or even allow attackers to escalate privileges within the database environment. This vulnerability also aligns with ATT&CK technique T1071.004 for application layer protocol manipulation and T1046 for network service scanning, as attackers would need to identify the vulnerable endpoint and craft appropriate payloads.
Mitigation strategies for CVE-2009-2592 must focus on implementing proper input validation and parameterized queries to prevent SQL injection attacks. The most effective remediation involves replacing direct string concatenation with prepared statements or parameterized queries, ensuring that user input is properly escaped or filtered before being processed. Organizations should also implement proper access controls and database permissions to limit the potential impact of successful attacks. The patching process requires updating the PHPJunkYard GBook 1.6 application to a version that addresses this vulnerability, as the original codebase contains fundamental design flaws that cannot be adequately secured through workarounds. Additionally, implementing web application firewalls and input validation rules at the network perimeter can provide additional defense-in-depth measures. Security monitoring should be enhanced to detect unusual database access patterns or malformed SQL queries that may indicate exploitation attempts, while regular security assessments should verify that similar vulnerabilities do not exist within other application components. The vulnerability demonstrates the critical importance of input validation and proper database access controls in preventing unauthorized data manipulation and maintaining application security integrity.