CVE-2021-35666 Explained : Impact and Mitigation

This CVE-2021-35666 involves a vulnerability in the Oracle HTTP Server product of Oracle Fusion Middleware, specifically in the OSSL Module. An unauthenticated attacker with network access via HTTPS can exploit this vulnerability. Successful attacks can lead to unauthorized access to critical data or complete control of all Oracle HTTP Server accessible data with a CVSS 3.1 Base Score of 5.9.

Understanding CVE-2021-35666

This section delves into the details of the CVE-2021-35666 vulnerability.

What is CVE-2021-35666?

CVE-2021-35666 is a security vulnerability found in the Oracle HTTP Server product of Oracle Fusion Middleware. The affected version is 11.1.1.9.0.

The Impact of CVE-2021-35666

The vulnerability allows an unauthenticated attacker with network access via HTTPS to compromise the Oracle HTTP Server. This can result in unauthorized access to critical data or complete control of all accessible data.

Technical Details of CVE-2021-35666

This section outlines the technical aspects of CVE-2021-35666.

Vulnerability Description

The vulnerability in the Oracle HTTP Server product allows attackers to exploit the OSSL Module and gain unauthorized access.

Affected Systems and Versions

The vulnerability affects version 11.1.1.9.0 of the Oracle HTTP Server product by Oracle Corporation.

Exploitation Mechanism

Attackers with network access via HTTPS can exploit this vulnerability to compromise the Oracle HTTP Server.

Mitigation and Prevention

Here are the steps to mitigate and prevent exploitation of CVE-2021-35666.

Immediate Steps to Take

Organizations should apply security patches provided by Oracle promptly to address this vulnerability.

Long-Term Security Practices

Maintain strict network access controls and monitor network traffic to detect and prevent unauthorized access.

Patching and Updates

Regularly check for updates and security advisories from Oracle to stay informed about patches and fixes for known vulnerabilities.