CVE-2006-7034 in Super Link Exchange Script
Summary
by MITRE
SQL injection vulnerability in directory.php in Super Link Exchange Script 1.0 might allow remote attackers to execute arbitrary SQL queries via the cat parameter.
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Analysis
by VulDB Data Team • 10/10/2017
The vulnerability identified as CVE-2006-7034 represents a critical SQL injection flaw within the Super Link Exchange Script version 1.0, specifically affecting the directory.php component. This issue arises from inadequate input validation and sanitization mechanisms that fail to properly filter user-supplied data before incorporating it into SQL query constructions. The vulnerability is particularly concerning as it affects a web application component that likely handles user-generated content or administrative functions, making it a prime target for malicious actors seeking unauthorized database access.
The technical exploitation of this vulnerability occurs through manipulation of the cat parameter within the directory.php script. When an attacker submits malicious input through this parameter, the application fails to properly escape or sanitize the data before executing it within a database query context. This oversight creates an environment where attacker-controlled SQL commands can be injected and executed with the privileges of the database user account under which the web application operates. The flaw directly maps to CWE-89, which specifically addresses SQL injection vulnerabilities where untrusted data is incorporated into SQL commands without proper validation or escaping mechanisms.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with potentially full database access capabilities. Successful exploitation could enable unauthorized users to extract sensitive information, modify database contents, create new database users, or even execute system commands if the database server permits such operations. The vulnerability affects the integrity and confidentiality of the web application's data repository, potentially compromising user information, configuration settings, and business-critical data stored within the database. From an attacker's perspective, this vulnerability aligns with ATT&CK technique T1071.004 for Application Layer Protocol: DNS, as attackers may leverage SQL injection to establish persistent access or escalate privileges through database manipulation.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements. The primary fix involves implementing proper input validation and parameterized queries throughout the application codebase, particularly within the directory.php component where the vulnerability manifests. All user-supplied input should be rigorously validated against expected data formats and sanitized before database interaction. Additionally, the application should employ prepared statements or parameterized queries to ensure that user input is treated as literal data rather than executable code. Database access should be restricted to the minimum necessary privileges, and proper error handling should be implemented to prevent information disclosure that could aid further exploitation attempts. Organizations should also consider implementing web application firewalls and intrusion detection systems to monitor for suspicious query patterns that may indicate attempted exploitation of similar vulnerabilities.