CVE-2021-2376 Explained : Impact and Mitigation

This article provides detailed information about CVE-2021-2376, a vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware.

Understanding CVE-2021-2376

CVE-2021-2376 is a vulnerability in Oracle WebLogic Server that allows an unauthenticated attacker with network access to compromise the server via T3, IIOP. Successful exploitation can lead to a complete denial of service (DOS) with a CVSS 3.1 Base Score of 7.5.

What is CVE-2021-2376?

CVE-2021-2376 is a vulnerability in Oracle WebLogic Server, affecting versions 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0. It allows unauthorized attackers to cause server crashes or hangs.

The Impact of CVE-2021-2376

The vulnerability poses a high availability impact, enabling attackers to disrupt the Oracle WebLogic Server's operation and potentially crash the system.

Technical Details of CVE-2021-2376

CVE-2021-2376 is classified as a vulnerability with a base severity of HIGH and an attack vector through the network.

Vulnerability Description

The vulnerability in Oracle WebLogic Server allows unauthenticated attackers to compromise the server via network access, leading to a complete denial of service (DOS).

Affected Systems and Versions

Oracle WebLogic Server versions 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0 are affected by CVE-2021-2376.

Exploitation Mechanism

Attackers can exploit the vulnerability by leveraging network access via protocols like T3 and IIOP to compromise the Oracle WebLogic Server.

Mitigation and Prevention

To mitigate the risk associated with CVE-2021-2376, immediate action is required along with long-term security practices.

Immediate Steps to Take

Organizations should apply patches and updates provided by Oracle to address the vulnerability in Oracle WebLogic Server.

Long-Term Security Practices

Implementing strong network security measures and regularly monitoring for security updates are essential for long-term protection.

Patching and Updates

Regularly applying security patches and updates from Oracle is crucial to safeguard systems against known vulnerabilities.