CVE-2019-7747 in DbNinja
Summary
by MITRE
DbNinja 3.2.7 allows session fixation via the data.php sessid parameter.
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Analysis
by VulDB Data Team • 07/09/2023
The vulnerability identified as CVE-2019-7747 affects DbNinja version 3.2.7 and represents a session fixation weakness that can be exploited through the data.php sessid parameter. This issue falls under the broader category of session management flaws that have significant implications for web application security. Session fixation vulnerabilities occur when an application fails to properly invalidate or regenerate session identifiers upon user authentication, allowing attackers to maintain persistent access to user sessions. The specific exploitation vector involves manipulating the sessid parameter within the data.php endpoint, which directly impacts how the application handles session tokens.
The technical flaw stems from improper session handling mechanisms within DbNinja's authentication flow. When users authenticate to the application, the system should generate a new, unique session identifier that replaces any existing session token. However, in this case, the application accepts and processes the sessid parameter from the data.php file without adequately validating or regenerating session identifiers. This allows an attacker who has already established a session to manipulate the sessid parameter to fixate their session token, potentially enabling them to hijack user sessions. The vulnerability is particularly concerning because it operates at the application layer where session management controls should be robust and well-defined.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential data breaches, privilege escalation, and persistent unauthorized access to sensitive database operations. Attackers can exploit this flaw to maintain long-term access to database management interfaces, potentially gaining read and write privileges to underlying database systems. This could result in data exfiltration, unauthorized modifications to database structures, or complete compromise of database integrity. The vulnerability affects the confidentiality, integrity, and availability of database resources managed through the DbNinja interface, particularly when users have elevated privileges within the database environment.
Mitigation strategies for CVE-2019-7747 should focus on implementing proper session management practices that align with established security standards and frameworks. Organizations should immediately upgrade to a patched version of DbNinja that addresses this session fixation vulnerability. The implementation of secure session management should include automatic session regeneration upon successful authentication, proper session invalidation upon logout, and the use of secure session cookie attributes such as HttpOnly, Secure, and SameSite flags. Additionally, developers should ensure that session identifiers are generated using cryptographically secure random number generators and that all session parameters are properly validated and sanitized. This vulnerability relates to CWE-384 which specifically addresses session fixation issues, and aligns with ATT&CK technique T1563.002 for credential access through session hijacking, making it a critical concern for organizations implementing database management solutions.