CVE-2006-0320 in Bit 5 Blog
Summary
by MITRE
SQL injection vulnerability in admin/processlogin.php in Bit 5 Blog 8.01 allows remote attackers to execute arbitrary SQL commands and bypass authentication via the (1) username and (2) password parameter.
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Analysis
by VulDB Data Team • 07/29/2025
The vulnerability identified as CVE-2006-0320 represents a critical SQL injection flaw within the Bit 5 Blog 8.01 content management system, specifically affecting the admin/processlogin.php component. This security weakness stems from inadequate input validation and sanitization mechanisms that fail to properly escape or filter user-supplied data before incorporating it into database queries. The vulnerability manifests when attackers manipulate the username and password parameters through HTTP requests, enabling them to inject malicious SQL code that can be executed within the database context. The flaw allows remote attackers to bypass authentication mechanisms and gain unauthorized access to administrative functions, potentially leading to complete system compromise and data breaches.
The technical implementation of this vulnerability aligns with CWE-89, which categorizes SQL injection as a serious weakness occurring when untrusted data is incorporated into SQL commands without proper sanitization. The vulnerability operates by exploiting the application's failure to implement parameterized queries or adequate input filtering for authentication parameters. When the login script processes user credentials, it directly concatenates the username and password values into SQL query strings without proper escaping or validation, creating an opportunity for attackers to inject SQL syntax that alters the intended query behavior. This allows malicious actors to manipulate the authentication process, potentially extracting database contents, modifying user accounts, or executing arbitrary database commands.
The operational impact of this vulnerability extends beyond simple authentication bypass, as it provides attackers with a foothold for further exploitation within the system. Successful exploitation enables attackers to gain administrative privileges without legitimate credentials, potentially leading to complete system compromise, data theft, or service disruption. The vulnerability affects the authentication layer of the blogging platform, making it particularly dangerous as it undermines the fundamental security model of the application. Attackers can leverage this weakness to perform unauthorized database operations, modify or delete content, and potentially escalate privileges to gain access to underlying system resources. The remote nature of the vulnerability means that attackers can exploit it from anywhere on the internet without requiring physical access to the system.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and sanitization techniques to prevent SQL injection attacks. The most effective approach involves transitioning from concatenated SQL queries to parameterized queries or prepared statements, which ensure that user input is properly escaped and treated as data rather than executable code. Additionally, implementing proper authentication mechanisms with account lockout policies and rate limiting can help reduce the effectiveness of brute force attacks targeting this vulnerability. Regular security updates and patch management procedures should be implemented to address known vulnerabilities, while input validation should be enforced at multiple layers of the application architecture. Network segmentation and intrusion detection systems can provide additional defense-in-depth measures to monitor for suspicious authentication attempts and potential exploitation activities. Organizations should also consider implementing web application firewalls to filter malicious SQL injection payloads before they reach the vulnerable application components, aligning with ATT&CK technique T1190 for exploiting vulnerabilities in web applications.