CVE-2018-1085 : What You Need to Know
Learn about CVE-2018-1085, a critical vulnerability in openshift-ansible that could allow unauthorized access to an Openshift cluster's data. Find mitigation steps and prevention measures here.
A vulnerability in openshift-ansible versions 3.9.23 and 3.7.46 could allow unauthorized access to an Openshift cluster's data stored in the etcd datastore.
Understanding CVE-2018-1085
This CVE involves a misconfiguration in the etcd file that disables SSL client certificate authentication, potentially leading to unauthorized access and modification of cluster data.
What is CVE-2018-1085?
In openshift-ansible versions 3.9.23 and 3.7.46, misconfigured quotations in the etcd file disable SSL client certificate authentication, allowing attackers to connect without authentication.
The Impact of CVE-2018-1085
- CVSS Score: 9.0 (Critical)
- Attack Vector: Adjacent Network
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- This vulnerability could lead to unauthorized actions within the Openshift cluster, potentially compromising data integrity and system availability.
Technical Details of CVE-2018-1085
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The misconfiguration in openshift-ansible versions 3.9.23 and 3.7.46 disables SSL client certificate authentication due to incorrect usage of quotations in the etcd file.
Affected Systems and Versions
- Product: openshift-ansible
- Versions: 3.9.23, 3.7.46
Exploitation Mechanism
Attackers gaining access to the etcd server on master nodes can connect without authentication, potentially accessing and modifying all data related to the Openshift cluster in the etcd datastore.
Mitigation and Prevention
Protect your systems from CVE-2018-1085 with the following steps:
Immediate Steps to Take
- Apply patches provided by the vendor.
- Monitor network traffic for any suspicious activity.
- Restrict access to the etcd server to authorized personnel only.
Long-Term Security Practices
- Regularly update and patch all software components.
- Implement network segmentation to limit access to critical servers.
- Conduct regular security audits and assessments.
Patching and Updates
Ensure that openshift-ansible is updated to versions that address the misconfiguration to prevent unauthorized access.