CVE-2006-6993 in Neuron Blog
Summary
by MITRE
Multiple SQL injection vulnerabilities in pages/addcomment2.php in Neuron Blog 1.1 allow remote attackers to inject arbitrary SQL commands via the (1) commentname, (2) commentmail, (3) commentwebsite, and (4) comment parameters. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 10/09/2017
The vulnerability identified as CVE-2006-6993 affects Neuron Blog version 1.1 and represents a critical SQL injection flaw in the pages/addcomment2.php script. This vulnerability stems from inadequate input validation and sanitization mechanisms within the web application's comment submission functionality. The flaw specifically impacts four distinct parameters including commentname, commentmail, commentwebsite, and comment, all of which are processed without proper sanitization before being incorporated into database queries. The absence of input filtering creates an exploitable condition where malicious actors can inject arbitrary SQL commands directly through these parameters, potentially compromising the entire database backend. This vulnerability aligns with CWE-89 which defines SQL injection as the insertion of malicious SQL code into input fields for execution by the database. The attack vector operates through remote exploitation, allowing unauthorized users to manipulate database operations without requiring legitimate credentials or direct system access.
The operational impact of this vulnerability extends beyond simple data theft, encompassing complete database compromise and potential system takeover. Attackers leveraging this flaw can execute unauthorized database operations including data retrieval, modification, deletion, and potentially even database schema manipulation. The vulnerability enables attackers to bypass authentication mechanisms and gain unauthorized access to sensitive information stored within the blog's database. This includes user credentials, personal information, and potentially administrative access details that could lead to complete system compromise. The vulnerability's classification under ATT&CK technique T1190 emphasizes the exploitation of remote services through injection flaws, while also aligning with T1071.004 which covers application layer protocol manipulation. The lack of proper input validation creates a persistent threat vector that remains active until the underlying code is patched or the application is properly secured.
Mitigation strategies for CVE-2006-6993 must focus on implementing robust input validation and parameterized queries to prevent SQL injection attacks. The most effective approach involves sanitizing all user inputs through proper escaping mechanisms before database insertion, while also implementing prepared statements or parameterized queries that separate SQL code from data. Organizations should immediately patch the affected Neuron Blog version 1.1 to the latest available secure release, as this vulnerability has been present for over a decade and represents a well-known exploitation pattern. Network-level defenses including web application firewalls should be deployed to monitor and block suspicious SQL injection patterns, while also implementing proper access controls and database user permissions to limit the impact of potential successful attacks. Additionally, regular security auditing and penetration testing should be conducted to identify similar vulnerabilities in other applications within the organization's infrastructure. The vulnerability demonstrates the critical importance of input validation practices and aligns with security best practices outlined in OWASP Top Ten, specifically addressing the SQL injection category that consistently ranks among the most dangerous web application vulnerabilities.