CVE-2020-2518 : Security Advisory and Response

A vulnerability in the Java VM component of Oracle Database Server affecting multiple versions.

Understanding CVE-2020-2518

This CVE involves a vulnerability in the Java VM component of Oracle Database Server, impacting various versions.

What is CVE-2020-2518?

The vulnerability allows a low-privileged attacker with Create Session privilege and network access to compromise the Java VM, potentially leading to a takeover.

The Impact of CVE-2020-2518

CVSS 3.0 Base Score: 7.5 (High impact on Confidentiality, Integrity, and Availability)
Attack Vector: Network
Attack Complexity: High
Privileges Required: Low
User Interaction: None
Scope: Unchanged

Technical Details of CVE-2020-2518

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability in the Java VM component of Oracle Database Server affects versions 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c, and 19c.

Affected Systems and Versions

Oracle Database 11.2.0.4
Oracle Database 12.1.0.2
Oracle Database 12.2.0.1
Oracle Database 18c
Oracle Database 19c

Exploitation Mechanism

The vulnerability is difficult to exploit and requires a low-privileged attacker with Create Session privilege and network access via multiple protocols to compromise the Java VM.

Mitigation and Prevention

Steps to address and prevent the CVE.

Immediate Steps to Take

Apply patches provided by Oracle promptly.
Restrict network access to the affected systems.
Monitor for any unauthorized access attempts.

Long-Term Security Practices

Regularly update and patch Oracle Database installations.
Implement the principle of least privilege for user access.
Conduct regular security assessments and audits.

Patching and Updates

Stay informed about security updates from Oracle.
Apply patches and updates as soon as they are released.