CVE-2006-2127 in Blog Mod
Summary
by MITRE
SQL injection vulnerability in weblog_posting.php in Blog Mod 0.2.x allows remote attackers to execute arbitrary SQL commands via the r parameter.
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Analysis
by VulDB Data Team • 08/03/2025
The vulnerability identified as CVE-2006-2127 represents a critical SQL injection flaw within the Blog Mod 0.2.x software suite, specifically affecting the weblog_posting.php component. This vulnerability resides in the handling of user input parameters, where the r parameter fails to properly sanitize or validate incoming data before incorporating it into SQL query constructions. The flaw enables malicious actors to inject arbitrary SQL commands through the web interface, potentially compromising the entire database backend that supports the blogging platform. This type of vulnerability falls under the Common Weakness Enumeration category CWE-89, which specifically addresses SQL injection weaknesses in software applications. The attack vector leverages the web application's failure to implement proper input validation and output encoding mechanisms, creating an exploitable condition where user-supplied data directly influences database query execution paths. The vulnerability demonstrates a fundamental breakdown in the application's data handling security controls, where untrusted input flows directly into database operations without adequate sanitization or parameterization.
The operational impact of this vulnerability extends beyond simple data theft, as successful exploitation could enable attackers to gain full administrative control over the database system. Attackers can leverage the SQL injection to extract sensitive information including user credentials, personal data, and application configuration details. The vulnerability also permits modification or deletion of database records, potentially leading to complete service disruption or data corruption. In a broader context, this weakness aligns with the MITRE ATT&CK framework's technique T1071.004, which covers application layer protocol manipulation, specifically targeting database communication channels. The affected Blog Mod 0.2.x version represents a legacy system where proper security practices were not adequately implemented, making it particularly susceptible to such attacks. The vulnerability's remote exploitability means that attackers do not require physical access to the system or network, allowing them to target the application from any location with internet connectivity.
Mitigation strategies for CVE-2006-2127 must address both immediate remediation and long-term architectural improvements to prevent similar vulnerabilities. The primary solution involves implementing proper parameterized queries or prepared statements throughout the application codebase, ensuring that user input is never directly concatenated into SQL commands. Input validation and sanitization should be enforced at multiple layers, including both client-side and server-side controls, to create defense-in-depth measures. The application should also implement proper output encoding when displaying database results to prevent secondary injection attacks. Security patches and updates should be applied immediately to the Blog Mod software, as the vulnerability affects version 0.2.x which likely lacks modern security features. Organizations should establish comprehensive input validation policies and conduct regular security assessments to identify and remediate similar vulnerabilities. The remediation process should include code reviews focusing on database interaction patterns and implementation of automated testing tools to detect SQL injection vulnerabilities during development cycles. Additionally, network segmentation and access controls should be implemented to limit the potential damage from successful exploitation attempts, while maintaining proper logging and monitoring of database activities to detect anomalous behavior patterns.