CVE-2006-4793 in TualBLOG
Summary
by MITRE
Multiple SQL injection vulnerabilities in icerik.asp in TualBLOG 1.0 allow remote attackers to execute arbitrary SQL commands, as demonstrated by the icerikno parameter.
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Analysis
by VulDB Data Team • 07/20/2024
The vulnerability identified as CVE-2006-4793 represents a critical SQL injection flaw within the TualBLOG 1.0 content management system, specifically affecting the icerik.asp component. This vulnerability resides in the handling of user-supplied input through the icerikno parameter, which is processed without adequate sanitization or validation mechanisms. The flaw allows malicious actors to inject arbitrary SQL commands into the database query execution flow, potentially enabling complete database compromise and unauthorized access to sensitive information. The vulnerability is classified under CWE-89 which specifically addresses SQL injection vulnerabilities where untrusted data is directly incorporated into SQL commands without proper escaping or parameterization. This type of vulnerability falls squarely within the ATT&CK technique T1190 - Proxy Process, as attackers can leverage this flaw to manipulate database queries and potentially escalate privileges.
The technical exploitation of this vulnerability occurs when the icerikno parameter is passed to the icerik.asp script without proper input validation. The application directly incorporates this parameter into SQL queries without employing prepared statements or parameterized queries, creating an environment where attackers can manipulate the SQL execution context. When an attacker submits malicious input through the icerikno parameter, the application processes this input as part of the SQL command structure, allowing for command injection attacks. This vulnerability enables attackers to perform unauthorized database operations including but not limited to data retrieval, modification, deletion, and potentially database schema enumeration. The impact extends beyond simple data theft as attackers can leverage this vulnerability to execute system commands on the database server, depending on the database management system in use and the privileges of the database user account.
The operational impact of this vulnerability is severe and multifaceted, affecting both the confidentiality and integrity of the affected system. Successful exploitation allows attackers to extract sensitive information from the database, including user credentials, personal data, and application configuration details. The vulnerability can be exploited remotely without requiring authentication, making it particularly dangerous as it can be leveraged by anyone with access to the vulnerable web application. Database administrators may face complete loss of control over their data, with potential for data corruption, unauthorized modifications, and service disruption. The vulnerability also creates opportunities for attackers to establish persistent access through the database, potentially using it as a foothold for further network penetration. Organizations relying on TualBLOG 1.0 for content management would face significant security implications including potential compliance violations and regulatory penalties due to data exposure.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security improvements. The most effective immediate solution involves implementing proper input validation and sanitization for all user-supplied parameters, particularly the icerikno parameter in this case. Applications should employ parameterized queries or prepared statements to ensure that user input is treated as data rather than executable code. Database access controls should be reviewed and implemented to ensure that database accounts used by the web application have minimal required privileges. The principle of least privilege should be enforced where database users have access only to the specific tables and operations necessary for the application functionality. Additionally, regular security testing including automated vulnerability scanning and manual penetration testing should be conducted to identify similar vulnerabilities in other components of the application. Network segmentation and web application firewalls can provide additional layers of protection, while proper logging and monitoring should be implemented to detect and respond to exploitation attempts. The vulnerability demonstrates the critical importance of secure coding practices and input validation, which aligns with security standards such as OWASP Top Ten and ISO 27001 requirements for secure application development and maintenance.