CVE-2021-38445 : What You Need to Know

This article provides detailed information about CVE-2021-38445, a vulnerability in OCI OpenDDS versions prior to 3.18.1 that could allow remote code execution.

Understanding CVE-2021-38445

CVE-2021-38445 is a security vulnerability in OCI OpenDDS software versions before 3.18.1, leading to improper handling of a length parameter inconsistency, which may enable attackers to execute arbitrary code remotely.

What is CVE-2021-38445?

OCI OpenDDS versions below 3.18.1 lack the proper handling of a length parameter consistent with the actual data length, potentially paving the way for malicious actors to trigger remote code execution.

The Impact of CVE-2021-38445

The vulnerability carries a CVSSv3.1 base score of 7, categorized as high severity due to its potential to affect the availability of the system in a network-based attack. Although the confidentiality and integrity impacts are low, immediate action is necessary to prevent exploitation.

Technical Details of CVE-2021-38445

This section outlines the vulnerability description, affected systems and versions, and the exploitation mechanism in detail.

Vulnerability Description

OCI OpenDDS versions prior to 3.18.1 mishandle a length parameter inconsistent with the actual data length, creating an opportunity for remote code execution by threat actors.

Affected Systems and Versions

The vulnerability affects OpenDDS software from OCI with versions below 3.18.1, where the length parameter issue exists, making these systems susceptible to exploitation.

Exploitation Mechanism

Malicious entities can exploit this vulnerability by manipulating the length parameter inconsistency in data processing to execute unauthorized code remotely.

Mitigation and Prevention

To safeguard against CVE-2021-38445, immediate mitigation steps and long-term security practices are crucial alongside timely patching and updates.

Immediate Steps to Take

Users of OCI OpenDDS should promptly update their software to version 3.18.1 or later to eliminate the length parameter inconsistency vulnerability and prevent potential remote code execution attempts.

Long-Term Security Practices

Enhance overall system security by implementing secure coding practices, regular security assessments, and staying informed about emerging vulnerabilities.

Patching and Updates

Stay vigilant for security advisories and promptly apply patches or updates released by OCI to address known vulnerabilities like CVE-2021-38445 and improve system security.