CVE-2016-5497 in Database Server
Summary
by MITRE
Unspecified vulnerability in the RDBMS Security component in Oracle Database Server 12.1.0.2 allows local users to affect confidentiality, integrity, and availability via unknown vectors.
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Analysis
by VulDB Data Team • 09/26/2022
The vulnerability identified as CVE-2016-5497 resides within the RDBMS Security component of Oracle Database Server version 12.1.0.2, representing a significant security weakness that affects local users with potentially severe consequences for database integrity and confidentiality. This unspecified vulnerability operates within the database security framework, where the lack of specific technical details in the initial description suggests a complex underlying flaw that may involve multiple attack vectors or system components. The vulnerability specifically targets the RDBMS Security component, which is responsible for implementing access controls, authentication mechanisms, and data protection features within the Oracle database environment. The fact that it affects local users indicates that the flaw can be exploited by individuals who already have some level of system access, potentially through legitimate user accounts or privileged processes that interact with the database server.
The technical nature of this vulnerability demonstrates a fundamental weakness in Oracle's database security architecture where unauthorized access or manipulation of database resources can occur through unspecified vectors that may include privilege escalation, data manipulation, or service disruption mechanisms. The unspecified nature of the attack vectors suggests that the vulnerability may encompass multiple related weaknesses or could be a result of insufficient input validation, improper access control implementation, or flawed privilege management within the security component. Such vulnerabilities typically arise from complex interactions between different database security modules or from implementation flaws in how the security component handles authentication, authorization, or data protection requests. The vulnerability's potential to affect confidentiality, integrity, and availability indicates that it could enable attackers to access sensitive data, modify database contents, or disrupt database services, representing a complete compromise of the database security model.
The operational impact of CVE-2016-5497 extends beyond simple data exposure or service disruption, as it fundamentally undermines the trust model that Oracle Database Server relies upon for protecting enterprise data assets. Local users who can exploit this vulnerability may gain unauthorized access to database tables, views, stored procedures, or other sensitive database objects that should be protected by access controls. The confidentiality aspect suggests that attackers could potentially read data that should be restricted to authorized users only, while the integrity component indicates that database modifications could occur without proper authorization or audit trails. Availability concerns imply that the vulnerability could be leveraged to disrupt database services through resource exhaustion, process termination, or other mechanisms that prevent legitimate users from accessing database functionality. This vulnerability particularly impacts organizations that rely on Oracle Database Server for critical business operations, as it could enable attackers to compromise sensitive corporate data, manipulate financial records, or disrupt business continuity. The local user access requirement means that attackers typically need to have some legitimate access to the system, which could include regular user accounts or even privileged service accounts that interact with the database.
Organizations affected by CVE-2016-5497 should implement immediate mitigations including applying the relevant Oracle security patches, reviewing and tightening access controls for database users, and monitoring database activities for signs of unauthorized access or manipulation. The vulnerability aligns with common attack patterns documented in the ATT&CK framework under privilege escalation and credential access tactics, where attackers leverage system-level access to expand their capabilities within the database environment. From a CWE perspective, this vulnerability may relate to multiple weakness categories including CWE-284 for improper access control, CWE-310 for cryptographic issues, or CWE-20 for input validation problems, depending on the specific attack vector utilized. Security teams should conduct comprehensive vulnerability assessments to identify all instances of Oracle Database Server 12.1.0.2 within their environment and prioritize patching based on risk assessment of database systems containing sensitive data. The vulnerability also highlights the importance of maintaining up-to-date security configurations and implementing proper network segmentation to limit the potential impact of local privilege escalation attacks. Organizations should also consider implementing database activity monitoring solutions that can detect anomalous access patterns or unauthorized data manipulation attempts that could indicate exploitation of this vulnerability. Regular security audits and penetration testing should be conducted to verify the effectiveness of implemented controls and identify additional security gaps that may exist within the database infrastructure.