CVE-2019-2776 Explained : Impact and Mitigation

A vulnerability has been identified in the Core RDBMS component of Oracle Database Server, affecting versions 12.1.0.2, 12.2.0.1, 18c, and 19c. This vulnerability poses a risk of unauthorized access and data compromise.

Understanding CVE-2019-2776

This CVE pertains to a critical vulnerability in Oracle Database Server that can be exploited by a high-privileged attacker with specific privileges and network access.

What is CVE-2019-2776?

The vulnerability in the Core RDBMS component of Oracle Database Server allows attackers to compromise the system, potentially leading to unauthorized access and data manipulation.

The Impact of CVE-2019-2776

The vulnerability affects versions 12.1.0.2, 12.2.0.1, 18c, and 19c of Oracle Database Server.
Exploitation by a high-privileged attacker can result in unauthorized access to critical data and complete access to all accessible data within Core RDBMS.
Unauthorized updates, inserts, or deletions to some accessible data in Core RDBMS are also possible.
The CVSS 3.0 Base Score for this vulnerability is 7.6, indicating significant impacts on confidentiality and integrity.

Technical Details of CVE-2019-2776

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows a high-privileged attacker with specific privileges and network access to compromise the Core RDBMS component of Oracle Database Server.

Affected Systems and Versions

Affected versions: 12.1.0.2, 12.2.0.1, 18c, 19c
Vendor: Oracle Corporation

Exploitation Mechanism

The attacker needs the privilege to Create Any Index and network access via OracleNet to exploit this vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2019-2776 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Oracle promptly.
Restrict network access and privileges to minimize the attack surface.
Monitor and audit database activities for any suspicious behavior.

Long-Term Security Practices

Regularly update and patch Oracle Database Server to address security vulnerabilities.
Implement the principle of least privilege to restrict access rights.
Conduct security training for personnel to enhance awareness of potential threats.

Patching and Updates

Stay informed about security advisories and updates from Oracle.
Regularly check for patches and apply them to ensure system security.