CVE-2008-4353 in Linkarity
Summary
by MITRE
SQL injection vulnerability in link.php in Linkarity allows remote attackers to execute arbitrary SQL commands via the cat_id parameter. NOTE: although one component of Linkarity is distributable PHP code, this issue might be site-specific. If so, it should not be included in CVE.
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Analysis
by VulDB Data Team • 11/04/2024
The vulnerability identified as CVE-2008-4353 represents a critical sql injection flaw within the link.php script of the Linkarity web application. This vulnerability specifically targets the cat_id parameter which serves as an input point for database queries. The flaw allows remote attackers to manipulate the sql execution flow by injecting malicious sql commands through this parameter, potentially gaining unauthorized access to the underlying database system. The vulnerability exists due to insufficient input validation and sanitization of user-supplied data before incorporating it into sql statements.
The technical implementation of this vulnerability stems from improper parameter handling within the link.php component where the cat_id parameter is directly used in sql queries without adequate sanitization or parameterization. This creates an environment where attacker-controlled input can alter the intended sql query structure, enabling arbitrary code execution at the database level. The vulnerability classification aligns with cwe-89 which specifically addresses sql injection flaws where untrusted data is incorporated into sql commands without proper escaping or parameterization. The attack vector requires only a remote connection to the vulnerable web application, making it particularly dangerous as it can be exploited from anywhere on the internet.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete system compromise. Successful exploitation could enable attackers to extract sensitive information including user credentials, personal data, and system configuration details. Additionally, attackers might gain the ability to modify or delete database contents, potentially causing data corruption or complete system outages. The vulnerability's remote nature means that attackers do not require physical access to the system or local network presence, significantly expanding the attack surface. From an att&ck framework perspective, this vulnerability maps to techniques involving command and control communications and credential access, as attackers can leverage the compromised database to establish persistent access or escalate privileges within the system.
Mitigation strategies for CVE-2008-4353 should focus on immediate input validation and parameterization of all database queries. The most effective approach involves implementing prepared statements or parameterized queries that separate sql command structure from data values, thereby preventing malicious input from altering query execution. Additionally, comprehensive input validation should be implemented to filter out potentially dangerous characters and patterns before any processing occurs. Network-level protections including web application firewalls and intrusion detection systems can provide additional layers of defense by monitoring for suspicious sql injection patterns. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities throughout the application codebase. System administrators should also implement proper access controls and database permissions to limit the potential damage even if exploitation occurs. The vulnerability's site-specific nature suggests that organizations should conduct thorough assessments to determine if their particular deployment is affected, as the issue might be resolved through custom modifications rather than standard patches.