CVE-2008-2671 in DCFM Blog
Summary
by MITRE
SQL injection vulnerability in comments.php in DCFM Blog 0.9.4 allows remote attackers to execute arbitrary SQL commands via the id parameter.
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Analysis
by VulDB Data Team • 10/27/2024
The vulnerability identified as CVE-2008-2671 represents a critical SQL injection flaw within the DCFM Blog content management system version 0.9.4. This vulnerability specifically affects the comments.php script which processes user comments and handles incoming data through the id parameter. The flaw enables remote attackers to inject malicious SQL commands directly into the database query execution flow, potentially compromising the entire database infrastructure. The vulnerability stems from inadequate input validation and sanitization mechanisms within the application's data handling processes, allowing attackers to manipulate the SQL query structure through crafted input values.
The technical implementation of this vulnerability follows the classic SQL injection pattern where user-supplied data is directly concatenated into SQL statements without proper escaping or parameterization. When the id parameter is passed to comments.php, the application fails to validate or sanitize the input before incorporating it into database queries. This creates an exploitable condition where an attacker can append malicious SQL syntax to the legitimate query, potentially bypassing authentication mechanisms, extracting sensitive data, or even modifying database contents. The vulnerability aligns with CWE-89 which specifically addresses improper neutralization of special elements used in SQL commands, and represents a fundamental failure in input validation practices. The attack surface is particularly concerning as it allows for arbitrary code execution at the database level, potentially enabling full system compromise.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete system compromise and unauthorized access to sensitive information. An attacker exploiting this vulnerability could gain access to user credentials, personal information, blog content, and potentially escalate privileges to gain administrative control over the entire blog system. The remote nature of the attack means that exploitation can occur from anywhere on the internet without requiring physical access to the system. This vulnerability directly maps to several ATT&CK techniques including T1190 for exploitation of remote services and T1071.004 for application layer protocol usage, as the attack leverages the web application interface to execute malicious SQL commands. Organizations running DCFM Blog 0.9.4 are particularly at risk as this vulnerability can be exploited without authentication, making it a prime target for automated scanning and exploitation tools commonly used by threat actors.
Mitigation strategies for CVE-2008-2671 require immediate implementation of proper input validation and parameterized queries to prevent SQL injection attacks. The most effective remediation involves updating the DCFM Blog application to a patched version that properly sanitizes all user inputs before processing them in database queries. Organizations should implement prepared statements or parameterized queries throughout the application to ensure that user input cannot alter the structure of SQL commands. Additionally, input validation should be enforced at multiple layers including application-level filtering, web application firewalls, and database-level access controls. Network segmentation and monitoring should be implemented to detect unusual database access patterns that might indicate exploitation attempts. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other applications, while implementing principle of least privilege access controls to limit potential damage from successful exploitation attempts. The vulnerability serves as a critical reminder of the importance of secure coding practices and the necessity of regular security updates to protect against known vulnerabilities.