CVE-2008-3767 in phpBazar
Summary
by MITRE
SQL injection vulnerability in classified.php in phpBazar 2.0.2 allows remote attackers to execute arbitrary SQL commands via the adid parameter.
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Analysis
by VulDB Data Team • 11/03/2024
The vulnerability identified as CVE-2008-3767 represents a critical sql injection flaw within the phpBazar 2.0.2 web application framework. This vulnerability specifically affects the classified.php script which handles classified advertisement functionality within the platform. The issue arises from insufficient input validation and sanitization of user-supplied data, creating an exploitable condition that enables remote attackers to manipulate the underlying database queries. The adid parameter serves as the primary attack vector, where malicious input can be injected into the sql execution flow without proper filtering or escaping mechanisms. This vulnerability falls under the common weakness enumeration CWE-89 which specifically addresses sql injection vulnerabilities that occur when user input is directly incorporated into sql commands without adequate sanitization. The attack surface is particularly concerning as it allows for complete database compromise, enabling unauthorized access to sensitive user information, advertisement data, and potentially system credentials stored within the phpBazar application's database.
The technical exploitation of this vulnerability occurs when an attacker crafts malicious input for the adid parameter that contains sql payload sequences designed to manipulate the database query execution. The lack of proper input validation means that sql keywords, functions, and operators can be injected directly into the query structure, allowing attackers to execute arbitrary sql commands on the database server. This type of injection can lead to data extraction, modification, or deletion operations, and in some cases may enable privilege escalation or even remote code execution depending on the database configuration and permissions. The vulnerability demonstrates a fundamental flaw in the application's data handling architecture where user inputs are not properly escaped or parameterized before being incorporated into sql statements. This weakness aligns with the attack technique described in the attack tree framework under ATT&CK tactic TA0006 (Credential Access) and TA0002 (Execution) where attackers can leverage sql injection to gain elevated privileges and execute malicious code on the target system.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete system compromise and potential service disruption. Remote attackers can exploit this vulnerability to extract confidential information including user credentials, personal details, and advertisement content that may contain sensitive business or personal data. The vulnerability also creates opportunities for attackers to modify or delete database records, potentially causing data integrity issues and service availability problems for legitimate users. Organizations running phpBazar 2.0.2 are particularly at risk as this vulnerability can be exploited without requiring any authentication or specialized tools beyond basic web browsing capabilities. The attack can be executed through standard web browser interfaces or automated tools, making it accessible to a wide range of threat actors from script kiddies to sophisticated adversaries. This vulnerability also creates potential for further attacks within the network as compromised database access can serve as a stepping stone for lateral movement and additional system exploitation. The vulnerability directly violates security principles outlined in the OWASP Top Ten 2017, specifically addressing the injection flaw category that remains one of the most prevalent and dangerous web application security issues. Organizations should implement immediate patching procedures, database access controls, and input validation measures to address this vulnerability. The recommended mitigations include implementing proper parameterized queries, input sanitization, and output encoding to prevent sql injection attacks. Additionally, network monitoring and intrusion detection systems should be configured to identify and alert on suspicious sql injection patterns. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other application components and to ensure that all input handling follows secure coding practices. The vulnerability also underscores the importance of maintaining up-to-date software versions and implementing robust security controls to prevent exploitation of known vulnerabilities in legacy web applications.