CVE-2017-7669 : Exploit Details and Defense Strategies
Learn about CVE-2017-7669, a privilege escalation vulnerability in Apache Hadoop versions 2.8.0, 3.0.0-alpha1, and 3.0.0-alpha2. Find out how authenticated users can run commands as root and steps to mitigate the risk.
Apache Hadoop versions 2.8.0, 3.0.0-alpha1, and 3.0.0-alpha2 are affected by a privilege escalation vulnerability due to insufficient validation in the LinuxContainerExecutor when executing docker commands. This allows authenticated users to run commands as root when the docker feature is enabled.
Understanding CVE-2017-7669
This CVE entry details a privilege escalation vulnerability in Apache Hadoop versions 2.8.0, 3.0.0-alpha1, and 3.0.0-alpha2.
What is CVE-2017-7669?
CVE-2017-7669 is a security vulnerability in Apache Hadoop that enables authenticated users to execute commands as root by exploiting insufficient input validation in the LinuxContainerExecutor when running docker commands.
The Impact of CVE-2017-7669
The vulnerability allows attackers to escalate their privileges and execute commands with root-level access, potentially leading to unauthorized control over the system.
Technical Details of CVE-2017-7669
This section provides technical insights into the CVE-2017-7669 vulnerability.
Vulnerability Description
The LinuxContainerExecutor in Apache Hadoop versions 2.8.0, 3.0.0-alpha1, and 3.0.0-alpha2 lacks proper input validation when executing docker commands, enabling authenticated users to run commands as root.
Affected Systems and Versions
- Product: Apache Hadoop
- Vendor: Apache Software Foundation
- Affected Versions: 2.8.0, 3.0.0-alpha1, 3.0.0-alpha2
Exploitation Mechanism
When the docker feature is enabled, authenticated users can exploit the vulnerability to execute commands as root, potentially leading to unauthorized system access.
Mitigation and Prevention
Protect your systems from CVE-2017-7669 with the following measures:
Immediate Steps to Take
- Disable the docker feature in affected versions of Apache Hadoop.
- Monitor system logs for any suspicious activities related to privilege escalation.
Long-Term Security Practices
- Regularly update Apache Hadoop to patched versions that address the vulnerability.
- Implement least privilege access controls to limit the impact of potential privilege escalation attacks.
Patching and Updates
- Apply security patches provided by Apache Software Foundation to fix the vulnerability in affected versions of Apache Hadoop.