CVE-2006-6189 in Clickblog
Summary
by MITRE
SQL injection vulnerability in displayCalendar.asp in ClickTech Click Blog allows remote attackers to execute arbitrary SQL commands via the date parameter.
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Analysis
by VulDB Data Team • 08/05/2024
The vulnerability identified as CVE-2006-6189 represents a critical SQL injection flaw within the ClickTech Click Blog web application's displayCalendar.asp component. This vulnerability specifically targets the date parameter handling mechanism, creating an avenue for remote attackers to inject malicious SQL code into the application's database queries. The flaw stems from insufficient input validation and sanitization practices within the web application's codebase, allowing unauthorized users to manipulate the SQL execution flow through crafted malicious inputs.
The technical exploitation of this vulnerability occurs when an attacker submits a specially crafted date parameter value that contains SQL commands rather than legitimate calendar data. The application fails to properly escape or validate user input before incorporating it into database queries, enabling the injection of malicious SQL syntax. This vulnerability maps directly to CWE-89, which categorizes SQL injection as a fundamental weakness in application input validation and data handling. The flaw operates at the application layer where user-supplied data directly influences database query construction without adequate protective measures.
The operational impact of this vulnerability is severe and multifaceted, as it grants attackers complete control over the affected database system. Successful exploitation allows adversaries to execute arbitrary SQL commands, potentially leading to unauthorized data access, data modification, or complete database compromise. Attackers could extract sensitive information such as user credentials, personal data, or business-critical information stored within the database. The vulnerability also enables privilege escalation attacks and can serve as a foothold for further network infiltration, aligning with ATT&CK technique T1071.004 for application layer protocol manipulation. Additionally, the compromise could result in data integrity violations and potential denial of service conditions affecting the entire web application.
Mitigation strategies for this vulnerability require immediate implementation of proper input validation and parameterized query construction practices. Organizations should implement strict input sanitization routines that filter or escape special characters commonly used in SQL injection attacks, including single quotes, semicolons, and comment markers. The application code must be refactored to utilize prepared statements or parameterized queries exclusively, ensuring that user input is treated as data rather than executable code. Security measures should include web application firewalls capable of detecting and blocking suspicious SQL injection patterns, along with regular security code reviews and penetration testing to identify similar vulnerabilities. Additionally, implementing least privilege database access controls and regular security updates for the ClickTech Click Blog application will significantly reduce the attack surface and overall risk exposure.