CVE-2006-0823 in Geeklog
Summary
by MITRE
Multiple SQL injection vulnerabilities in Geeklog 1.4.0 before 1.4.0sr1 and 1.3.11 before 1.3.11sr4 allow remote attackers to inject arbitrary SQL commands via the (1) userid variable to users.php or (2) sessid variable to lib-sessions.php.
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Analysis
by VulDB Data Team • 11/11/2025
The vulnerability identified as CVE-2006-0823 represents a critical SQL injection flaw affecting Geeklog content management systems version 1.4.0 before 1.4.0sr1 and 1.3.11 before 1.3.11sr4. This vulnerability resides in the authentication and session management components of the application, specifically in the users.php and lib-sessions.php files. The flaw allows remote attackers to execute arbitrary SQL commands by manipulating input parameters that are not properly sanitized or validated before being incorporated into database queries.
The technical implementation of this vulnerability stems from inadequate input validation and parameter sanitization within the Geeklog application's user authentication and session handling mechanisms. When the userid parameter is passed to users.php or the sessid parameter to lib-sessions.php, the application directly incorporates these values into SQL query constructions without proper escaping or parameterization. This creates an environment where malicious actors can inject malicious SQL payloads that bypass authentication mechanisms and potentially gain unauthorized access to the underlying database.
From an operational perspective, this vulnerability presents a severe risk to systems running affected Geeklog versions. Attackers can exploit these injection points to bypass user authentication, escalate privileges, extract sensitive data including user credentials and personal information, or even modify database content. The remote nature of the attack means that exploitation can occur from any location without requiring local system access, making it particularly dangerous for web applications that are publicly accessible. The vulnerability affects the core authentication functionality of the CMS, potentially allowing full administrative control over the affected system.
The impact of this vulnerability aligns with CWE-89, which specifically addresses SQL injection flaws, and can be mapped to several ATT&CK techniques including T1190 for exploitation of remote services and T1078 for valid accounts usage. Organizations running affected versions of Geeklog face significant risk of data breaches, unauthorized system access, and potential complete system compromise. The vulnerability demonstrates poor input validation practices and highlights the critical importance of implementing proper parameterized queries and input sanitization techniques. Mitigation efforts should focus on immediate patching to the latest available versions of Geeklog, implementing proper input validation at all entry points, and conducting comprehensive security reviews of all database interactions within the application. Additionally, network-level protections such as web application firewalls and intrusion detection systems can provide additional layers of defense against exploitation attempts.