CVE-2008-4357 in pLink
Summary
by MITRE
SQL injection vulnerability in linkto.php in Powie pLink 2.07 allows remote attackers to execute arbitrary SQL commands via the id parameter.
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Analysis
by VulDB Data Team • 11/04/2024
The vulnerability identified as CVE-2008-4357 represents a critical SQL injection flaw within the Powie pLink 2.07 web application, specifically affecting the linkto.php script. This vulnerability arises from insufficient input validation and sanitization practices within the application's parameter handling mechanisms, creating an exploitable condition that enables remote attackers to manipulate database queries through the id parameter. The flaw exists in the application's core functionality where user-supplied input directly influences SQL command construction without proper escaping or parameterization, violating fundamental database security principles.
The technical implementation of this vulnerability demonstrates a classic SQL injection attack vector where the id parameter in linkto.php fails to validate or sanitize incoming data before incorporating it into database queries. When an attacker submits malicious input through this parameter, the application processes the data without adequate protection mechanisms, allowing the injected SQL code to execute within the database context. This type of vulnerability falls under CWE-89 which specifically addresses improper neutralization of special elements used in SQL commands, and aligns with ATT&CK technique T1071.004 for application layer protocol manipulation. The vulnerability's impact is amplified by the fact that it operates at the database interaction level, potentially allowing attackers to extract sensitive data, modify database contents, or even gain elevated privileges within the database environment.
The operational consequences of this vulnerability extend beyond simple data compromise, as it provides attackers with a pathway to achieve persistent access and potential system compromise. Remote exploitation of this flaw enables attackers to perform unauthorized database operations including but not limited to data exfiltration, privilege escalation, and unauthorized modifications to the application's data repository. The vulnerability's remote exploitability means that attackers do not require physical access to the system or network, making it particularly dangerous for web applications. Organizations running Powie pLink 2.07 are exposed to risks including unauthorized data access, data corruption, and potential complete database compromise, which could lead to broader system infiltration and service disruption. This vulnerability also represents a significant risk for applications that store sensitive user information, as successful exploitation could result in exposure of personal data, authentication credentials, or other confidential information.
Mitigation strategies for CVE-2008-4357 must address both immediate remediation and long-term security hardening measures. The primary fix involves implementing proper input validation and parameterized queries within the linkto.php script to ensure that user-supplied data cannot influence SQL command structure. This requires modifying the application code to utilize prepared statements or stored procedures that separate SQL command structure from data values, thereby preventing injection attacks. Additionally, implementing proper output encoding and input sanitization mechanisms will help protect against similar vulnerabilities in other application components. Organizations should also establish comprehensive database access controls and monitoring systems to detect potential exploitation attempts. The remediation process should include thorough code review and security testing to identify and address similar vulnerabilities throughout the application codebase, following security best practices outlined in industry standards such as OWASP Top Ten and NIST cybersecurity guidelines. Regular security updates and patch management procedures should be implemented to prevent similar vulnerabilities from emerging in future application versions.