CVE-2009-0704 in WSN Guest
Summary
by MITRE
SQL injection vulnerability in search.php in WSN Guest 1.23 allows remote attackers to execute arbitrary SQL commands via the search parameter in an advanced action.
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Analysis
by VulDB Data Team • 11/21/2024
The vulnerability identified as CVE-2009-0704 represents a critical sql injection flaw within the WSN Guest 1.23 web application's search functionality. This vulnerability exists in the search.php script where the advanced action parameter is processed without proper input validation or sanitization, creating an exploitable condition that allows remote attackers to manipulate the underlying database queries. The flaw specifically manifests when the search parameter is submitted through the advanced action mechanism, enabling attackers to inject malicious sql code that bypasses normal authentication and authorization controls.
This sql injection vulnerability falls under the common weakness enumeration CWE-89 which categorizes improper neutralization of special elements used in sql commands as a primary weakness. The vulnerability operates by allowing attackers to append malicious sql syntax to the search parameter, which then gets executed by the database engine without proper filtering or escaping mechanisms. The impact extends beyond simple data retrieval as the attacker can potentially execute arbitrary commands, extract sensitive information, modify database contents, or even escalate privileges within the application's database environment.
The operational impact of this vulnerability is severe and multifaceted. Remote attackers can leverage this flaw to gain unauthorized access to the application's backend database, potentially accessing user credentials, personal information, and other sensitive data stored within the guestbook system. The vulnerability also enables attackers to modify or delete database records, which could lead to data integrity issues and service disruption. Furthermore, the exploitation can result in complete database compromise, allowing attackers to establish persistent access or even use the compromised system as a pivot point for attacking other systems within the network infrastructure. This vulnerability aligns with several tactics described in the attack framework including credential access through database exploitation and privilege escalation via malicious sql injection.
Mitigation strategies for this vulnerability require immediate implementation of proper input validation and parameterized queries. Organizations should implement proper input sanitization techniques that filter or escape special sql characters before processing user input. The recommended approach involves using prepared statements or parameterized queries that separate sql code from data, preventing the injection of malicious sql commands. Additionally, implementing proper access controls and least privilege principles can limit the damage that can be caused by successful exploitation. Regular security auditing and code reviews should be conducted to identify similar vulnerabilities in other parts of the application. The fix should also include implementing proper error handling that does not expose database structure information to end users, as this can aid attackers in crafting more sophisticated attacks. Security patches and updates should be applied immediately to address this vulnerability, and network monitoring should be enhanced to detect potential exploitation attempts.