CVE-2021-2371 Explained : Impact and Mitigation
Discover the impact of CVE-2021-2371, a high-severity vulnerability in Oracle Coherence that allows unauthorized attackers to compromise the system and cause Denial of Service (DOS) attacks. Learn how to mitigate and prevent exploitation.
This article provides insights into CVE-2021-2371, a vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core) that affects various versions.
Understanding CVE-2021-2371
This section delves into the details of the vulnerability, its impact, affected systems, and mitigation strategies.
What is CVE-2021-2371?
The vulnerability in Oracle Coherence enables an unauthenticated attacker with network access to compromise the system, leading to Denial of Service (DOS) attacks. The CVSS 3.1 Base Score for this vulnerability is 7.5, with a high impact on availability.
The Impact of CVE-2021-2371
Successful exploitation of this vulnerability can grant unauthorized users the ability to disrupt the Oracle Coherence system, causing a hang or repeatable crash, ultimately resulting in a complete Denial of Service (DOS) attack.
Technical Details of CVE-2021-2371
This section explores the technical aspects of the vulnerability, including its description, affected systems, and exploitation mechanism.
Vulnerability Description
The vulnerability allows unauthenticated attackers to compromise Oracle Coherence via network access, potentially leading to severe disruptions or crashes within the system.
Affected Systems and Versions
Oracle Coherence versions 3.7.1.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0 are impacted by this vulnerability, exposing them to exploitation.
Exploitation Mechanism
Attackers can exploit this vulnerability using T3 and IIOP interfaces to gain unauthorized access and disrupt the Oracle Coherence system.
Mitigation and Prevention
This section covers the steps organizations can take to mitigate the risks posed by CVE-2021-2371 and prevent potential attacks.
Immediate Steps to Take
Organizations should apply security patches provided by Oracle promptly to address the vulnerability and protect their systems from exploitation.
Long-Term Security Practices
Implementing robust network security measures, monitoring for suspicious activities, and conducting regular security assessments can enhance overall system resilience.
Patching and Updates
Regularly updating Oracle Coherence to the latest secure versions and staying informed about security alerts and patches are crucial to maintaining system integrity and security.