CVE-2016-5498 in Database Server
Summary
by MITRE
Unspecified vulnerability in the RDBMS Security component in Oracle Database Server 11.2.0.4 and 12.1.0.2 allows local users to affect confidentiality via unknown vectors, a different vulnerability than CVE-2016-5499.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 09/26/2022
The vulnerability identified as CVE-2016-5498 represents a security weakness within Oracle Database Server's RDBMS Security component that affects versions 11.2.0.4 and 12.1.0.2. This issue specifically targets local users who can potentially compromise the confidentiality of data through unspecified attack vectors that differ from the related vulnerability CVE-2016-5499. The classification as a local privilege escalation vulnerability indicates that attackers must already have access to the system to exploit this weakness, but once exploited, the impact can be significant for data protection and integrity.
From a technical perspective, this vulnerability resides within Oracle's database security architecture and demonstrates the complex nature of database security controls where local access can be leveraged to bypass confidentiality protections. The unspecified nature of the attack vectors suggests that the flaw may involve multiple pathways or mechanisms that could be exploited through various means such as privilege escalation within the database environment, manipulation of security controls, or exploitation of internal database processes. The vulnerability's location within the RDBMS Security component indicates it likely affects authentication mechanisms, authorization controls, or data encryption processes that protect database confidentiality.
The operational impact of CVE-2016-5498 extends beyond simple data exposure as it represents a potential pathway for attackers to access sensitive information that should remain protected within the database environment. Local attackers who can exploit this vulnerability may gain access to confidential database information, potentially including personally identifiable information, financial data, or proprietary business information. The fact that this vulnerability affects multiple database versions indicates a widespread issue within Oracle's security implementation that would require comprehensive patching across affected systems. Organizations with database servers running these vulnerable versions face increased risk of data breaches and compliance violations.
Security professionals should consider this vulnerability within the context of the MITRE ATT&CK framework where local privilege escalation techniques represent common attack patterns that can lead to data access and exfiltration. The vulnerability aligns with CWE-284, which addresses improper access control, and may involve weaknesses in the database's privilege management or access control mechanisms. Organizations should implement immediate mitigation strategies including applying Oracle's security patches, reviewing local user access controls, and monitoring database activity for signs of exploitation attempts. The vulnerability's classification as a local issue means that traditional network-based security controls may not prevent exploitation, requiring enhanced endpoint security measures and privileged access management protocols to reduce the attack surface.
The remediation approach for CVE-2016-5498 should involve immediate application of Oracle's security patches and updates to bring affected database servers to supported versions that contain fixes for this vulnerability. Additionally, organizations should conduct comprehensive security assessments of their database environments to identify potential exploitation vectors and implement monitoring solutions that can detect unauthorized access attempts or unusual database activity patterns. Regular security audits and access control reviews should be performed to ensure that local user privileges are properly managed and that the principle of least privilege is maintained across all database systems. The vulnerability's nature as a local privilege escalation issue also underscores the importance of maintaining secure database server configurations and implementing robust user authentication and authorization controls.