CVE-2019-2913 in Database Server
Summary
by MITRE
Vulnerability in the Core RDBMS component of Oracle Database Server. Supported versions that are affected are 12.2.0.1, 18c and 19c. Easily exploitable vulnerability allows low privileged attacker having Create Session privilege with network access via OracleNet to compromise Core RDBMS. While the vulnerability is in Core RDBMS, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Core RDBMS accessible data. CVSS 3.0 Base Score 5.0 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N).
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Analysis
by VulDB Data Team • 01/09/2024
The vulnerability identified as CVE-2019-2913 resides within Oracle Database Server's Core RDBMS component, representing a significant security weakness that affects multiple supported versions including 12.2.0.1, 18c, and 19c. This flaw operates under the Common Weakness Enumeration framework as CWE-284, specifically addressing improper access control mechanisms that allow unauthorized data access. The vulnerability's exploitability is classified as easily accessible, requiring only a low-privileged attacker who possesses the Create Session privilege to potentially compromise the system. This access requirement places the vulnerability within the ATT&CK framework's initial access phase, specifically under techniques related to privilege escalation and credential access.
The technical implementation of this vulnerability occurs through OracleNet network communication protocols, which serve as the primary attack vector for exploitation. Network-based attacks can be executed by adversaries who establish connections to the database server through OracleNet services, leveraging the existing Create Session privilege to bypass normal access controls. This mechanism aligns with ATT&CK's network service scanning and remote service attacks categories, where attackers exploit legitimate network protocols to gain unauthorized access. The vulnerability's design flaw allows for unauthorized data read access to a subset of Core RDBMS accessible data, creating a significant confidentiality impact that affects the integrity of database information.
The operational impact of CVE-2019-2913 extends beyond the immediate Core RDBMS component, as successful exploitation can potentially affect additional Oracle products within the ecosystem. This cascading effect demonstrates the interconnected nature of Oracle database installations where vulnerabilities in core components can propagate to dependent systems. The CVSS 3.0 base score of 5.0 indicates a moderate severity level, primarily due to the confidentiality impact that allows unauthorized data reading without modification or disruption capabilities. The vulnerability's scoring reflects the specific attack vector requiring network access (AV:N), low attack complexity (AC:L), and low privilege requirements (PR:L) which collectively create an accessible threat landscape.
Organizations affected by this vulnerability must implement immediate mitigations to protect their database environments. The primary recommended approach involves applying Oracle's official security patches and updates that specifically address this vulnerability. Network segmentation and firewall rules should be implemented to restrict unnecessary network access to Oracle database services, particularly limiting OracleNet communication to trusted sources only. Access control reviews are essential to ensure that only necessary users possess the Create Session privilege, following the principle of least privilege. Additionally, monitoring and logging mechanisms should be enhanced to detect anomalous database access patterns that might indicate exploitation attempts. The vulnerability's classification under CWE-284 and its operational characteristics make it particularly susceptible to automated exploitation tools, necessitating proactive security measures and continuous vulnerability assessment programs.