CVE-2019-12303 : Security Advisory and Response
Learn about CVE-2019-12303 affecting Rancher versions 2 to 2.2.3. Understand the risk of unauthorized access and command execution in the fluentd container. Find mitigation steps and updates.
Rancher versions 2 through 2.2.3 are vulnerable to a security issue that allows Project owners to inject additional fluentd configuration, potentially leading to unauthorized access and execution of arbitrary commands within the fluentd container.
Understanding CVE-2019-12303
This CVE entry highlights a vulnerability in Rancher versions 2 to 2.2.3 that enables Project owners to manipulate fluentd configurations, posing a risk of unauthorized access and command execution.
What is CVE-2019-12303?
The CVE-2019-12303 vulnerability in Rancher versions 2 through 2.2.3 permits Project owners to introduce extra settings in the fluentd configuration, potentially enabling them to access files or execute custom commands within the fluentd container.
The Impact of CVE-2019-12303
This vulnerability could lead to unauthorized access to sensitive files and the execution of arbitrary commands within the fluentd container, posing a significant security risk to the affected systems.
Technical Details of CVE-2019-12303
Rancher versions 2 to 2.2.3 are susceptible to unauthorized manipulation of fluentd configurations, allowing Project owners to compromise container security.
Vulnerability Description
Project owners in Rancher versions 2 through 2.2.3 can inject additional fluentd configuration, potentially leading to unauthorized access to files and execution of arbitrary commands within the fluentd container.
Affected Systems and Versions
- Rancher versions 2 to 2.2.3
Exploitation Mechanism
- Project owners can include extra settings in the fluentd configuration to access files or run custom commands within the fluentd container.
Mitigation and Prevention
To address CVE-2019-12303, immediate steps and long-term security practices are crucial.
Immediate Steps to Take
- Upgrade Rancher to version 2.2.4 or a secure release that addresses this vulnerability.
- Monitor and restrict Project owners' access to fluentd configurations.
Long-Term Security Practices
- Regularly review and update container configurations to prevent unauthorized changes.
- Implement strict access controls and permissions for Project owners.
Patching and Updates
- Apply patches and updates provided by Rancher to mitigate the CVE-2019-12303 vulnerability.