CVE-2006-4598 in ssLinks
Summary
by MITRE
Multiple SQL injection vulnerabilities in links.php in ssLinks 1.22 allow remote attackers to execute arbitrary SQL commands via the (1) go parameter and (2) id parameter in a rate action.
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Analysis
by VulDB Data Team • 08/03/2018
The vulnerability described in CVE-2006-4598 represents a critical SQL injection flaw within the ssLinks 1.22 web application, specifically affecting the links.php script. This vulnerability exposes the application to remote code execution attacks through improper input validation and sanitization mechanisms. The flaw manifests in two distinct parameter injection points: the 'go' parameter and the 'id' parameter, both of which are utilized during the rate action functionality of the application. These parameters are directly incorporated into SQL queries without adequate sanitization or parameterization, creating an exploitable condition that allows malicious actors to manipulate database operations.
The technical implementation of this vulnerability stems from the application's failure to properly validate and sanitize user input before incorporating it into database queries. When a user submits a request containing the 'go' or 'id' parameters, the ssLinks application processes these values directly within SQL command construction without employing prepared statements or proper input filtering mechanisms. This design flaw aligns with CWE-89, which categorizes SQL injection vulnerabilities as a direct result of inadequate input validation and improper query construction. The vulnerability exists at the application layer where user-supplied data transitions from client-side interaction to server-side database processing, creating an attack surface that adversaries can exploit to execute unauthorized database commands.
The operational impact of this vulnerability extends beyond simple data theft, as it enables attackers to perform complete database compromise operations including data retrieval, modification, deletion, and potentially unauthorized privilege escalation. Remote attackers can leverage this vulnerability to bypass authentication mechanisms, extract sensitive information from the database, modify application data, or even gain shell access to the underlying server if the database engine permits such operations. The attack vector is particularly dangerous because it requires no special privileges or local access, making it accessible to anyone who can interact with the vulnerable web application. This vulnerability affects the confidentiality, integrity, and availability of the targeted system, representing a significant risk to organizations relying on the ssLinks application for their web services.
Mitigation strategies for CVE-2006-4598 should focus on immediate code-level remediation through proper input validation and parameterized query implementation. Organizations must implement prepared statements or parameterized queries for all database interactions, ensuring that user input is properly escaped or sanitized before being incorporated into SQL commands. The application should validate all input parameters against expected data types and ranges, implementing strict whitelisting mechanisms where possible. Additionally, access controls should be strengthened to limit database permissions for the web application user account, following the principle of least privilege. Security monitoring should be enhanced to detect anomalous database access patterns that might indicate exploitation attempts. This vulnerability demonstrates the critical importance of input validation practices and aligns with ATT&CK technique T1190, which covers exploitation of vulnerabilities in web applications through SQL injection attacks. Organizations should also consider implementing web application firewalls and regular security code reviews to prevent similar vulnerabilities from being introduced in future development cycles.