CVE-2018-11768 : Security Advisory and Response

Apache Hadoop versions 3.1.0 to 3.1.1, 3.0.0-alpha1 to 3.0.3, 2.9.0 to 2.9.1, and 2.0.0-alpha to 2.8.4 are affected by a vulnerability that can corrupt user/group information stored in fsimage.

Understanding CVE-2018-11768

This CVE impacts Apache Hadoop, potentially leading to information disclosure due to corrupted user/group data.

What is CVE-2018-11768?

In Apache Hadoop versions specified, user/group information stored in fsimage can become corrupted, posing a risk of information disclosure.

The Impact of CVE-2018-11768

The vulnerability may result in the corruption of user/group data when stored in fsimage and subsequently read back from fsimage in affected Apache Hadoop versions.

Technical Details of CVE-2018-11768

Apache Hadoop versions 3.1.0 to 3.1.1, 3.0.0-alpha1 to 3.0.3, 2.9.0 to 2.9.1, and 2.0.0-alpha to 2.8.4 are susceptible to user/group information corruption in fsimage storage.

Vulnerability Description

The user/group information may become corrupted when stored in fsimage and read back from fsimage in the specified versions of Apache Hadoop.

Affected Systems and Versions

Apache Hadoop 3.1.0 to 3.1.1
Apache Hadoop 3.0.0-alpha1 to 3.0.3
Apache Hadoop 2.9.0 to 2.9.1
Apache Hadoop 2.0.0-alpha to 2.8.4

Exploitation Mechanism

The vulnerability allows for the corruption of user/group data during storage and retrieval processes in Apache Hadoop's fsimage.

Mitigation and Prevention

Immediate Steps to Take:

Update Apache Hadoop to a patched version that addresses the vulnerability.
Monitor user/group data integrity to detect any potential corruption. Long-Term Security Practices:
Regularly review and update security configurations in Apache Hadoop.
Implement access controls and monitoring mechanisms to safeguard user/group information.
Stay informed about security updates and best practices in Apache Hadoop.
Conduct periodic security audits and assessments to identify and mitigate vulnerabilities.

Patching and Updates

Ensure timely installation of security patches and updates provided by Apache Hadoop to fix the user/group information corruption vulnerability.