CVE-2017-3166 Explained : Impact and Mitigation
Learn about CVE-2017-3166 affecting Apache Hadoop versions 2.6.1 to 2.6.5, 2.7.0 to 2.7.3, and 3.0.0-alpha1. Discover the impact, technical details, and mitigation steps for this privilege escalation vulnerability.
Apache Hadoop versions 2.6.1 to 2.6.5, 2.7.0 to 2.7.3, and 3.0.0-alpha1 have a vulnerability where a file in an encryption zone, set to be readable by anyone, may be placed in a location accessible to anyone when localized using YARN's mechanism.
Understanding CVE-2017-3166
This CVE involves a privilege escalation vulnerability in Apache Hadoop.
What is CVE-2017-3166?
In Apache Hadoop versions 2.6.1 to 2.6.5, 2.7.0 to 2.7.3, and 3.0.0-alpha1, a file in an encryption zone with world-readable access permissions can be stored in a world-readable location, allowing any requesting application to freely access and share it.
The Impact of CVE-2017-3166
- Attackers can exploit this vulnerability to access sensitive data stored in encryption zones.
- Unauthorized users may gain access to confidential information.
Technical Details of CVE-2017-3166
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability allows files with world-readable access permissions in encryption zones to be stored in accessible locations, enabling unauthorized access.
Affected Systems and Versions
- Apache Hadoop versions 2.6.1 to 2.6.5
- Apache Hadoop versions 2.7.0 to 2.7.3
- Apache Hadoop versions 3.0.0-alpha1 to 3.0.0-alpha3
Exploitation Mechanism
Attackers can exploit the vulnerability by requesting the localization of a file in an encryption zone with world-readable access permissions.
Mitigation and Prevention
Protect your systems from CVE-2017-3166 with the following measures:
Immediate Steps to Take
- Upgrade Apache Hadoop to a patched version.
- Restrict access permissions to sensitive files.
- Monitor file access and permissions regularly.
Long-Term Security Practices
- Implement encryption for sensitive data.
- Conduct regular security audits and assessments.
- Educate users on secure data handling practices.
Patching and Updates
- Apply security patches provided by Apache Software Foundation.
- Stay informed about security updates and best practices.