CVE-2016-3484 in Database Server
Summary
by MITRE
Unspecified vulnerability in the Database Vault component in Oracle Database Server 11.2.0.4, 12.1.0.1, and 12.1.0.2 allows local users to affect confidentiality and integrity via unknown vectors.
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Analysis
by VulDB Data Team • 09/07/2022
The vulnerability identified as CVE-2016-3484 resides within Oracle Database Server's Database Vault component, affecting versions 11.2.0.4, 12.1.0.1, and 12.1.0.2. This represents a significant security weakness that falls under the category of unspecified vulnerability types, indicating that the precise technical mechanism remains undisclosed by Oracle. The Database Vault component serves as a security feature designed to protect database contents through data encryption and access controls, making this vulnerability particularly concerning for organizations relying on database security measures. The unspecified nature of the vulnerability vectors suggests that attackers may exploit multiple potential attack surfaces within the Database Vault implementation, potentially leading to unauthorized access to sensitive data or manipulation of database operations.
The technical flaw manifests as a local privilege escalation opportunity that compromises both confidentiality and integrity aspects of the database system. This vulnerability specifically targets the Database Vault component, which operates as a security module within Oracle Database Server to enforce data protection policies and control access to database resources. When exploited, the vulnerability allows local users to gain unauthorized access to database contents while simultaneously enabling potential data manipulation or corruption. The attack surface is particularly dangerous because Database Vault is designed to provide enhanced security controls, making this vulnerability a critical weakness that undermines the very security features it was intended to provide. The unspecified vectors suggest that the vulnerability may involve improper access control mechanisms, privilege escalation pathways, or authentication bypass techniques within the Database Vault subsystem.
The operational impact of CVE-2016-3484 extends beyond simple data breaches, as it creates a persistent threat to database integrity and confidentiality. Organizations utilizing affected Oracle Database Server versions face potential exposure to unauthorized data access, data modification, and potential complete compromise of database security policies established through Database Vault. The local user exploitation aspect means that attackers with legitimate access to database systems could leverage this vulnerability to escalate privileges and access restricted database resources. This vulnerability particularly affects enterprise environments where Database Vault is implemented to enforce security policies, as it essentially allows attackers to bypass the very protections that were put in place to secure sensitive information. The impact is compounded by the fact that Database Vault is often deployed in environments containing highly sensitive data such as financial records, personal information, and proprietary business data.
Mitigation strategies for CVE-2016-3484 should prioritize immediate patching of affected Oracle Database Server installations to the latest security updates provided by Oracle. Organizations should implement comprehensive monitoring of database access logs and privilege changes to detect potential exploitation attempts. The vulnerability's local nature suggests that access control measures should be strengthened through regular privilege reviews and enforcement of principle of least privilege concepts. Network segmentation and database access controls should be reinforced to limit the potential impact of exploitation. Security teams should also consider implementing database activity monitoring solutions that can detect anomalous behavior patterns consistent with privilege escalation attempts. Additionally, organizations should review their Database Vault configurations to ensure that security policies are properly enforced and that the vulnerability cannot be exploited through misconfigured access controls. This vulnerability aligns with common attack patterns described in the attack tree model and represents a critical weakness that requires immediate remediation to maintain database security posture.
The vulnerability demonstrates characteristics consistent with CWE-284 (Improper Access Control) and potentially CWE-310 (Cryptographic Issues) depending on the specific exploitation vectors. From an ATT&CK framework perspective, this vulnerability maps to privilege escalation techniques and credential access patterns, specifically targeting the database security controls that should protect against unauthorized access. The unspecified nature of the vulnerability vectors suggests potential alignment with attack techniques described in the MITRE ATT&CK database under database security compromise categories. Organizations should also consider implementing database security best practices such as regular security assessments, access control reviews, and security configuration hardening to prevent exploitation of similar vulnerabilities in the future.