CVE-2020-8568 : Security Advisory and Response

Kubernetes Secrets Store CSI Driver versions v0.0.15 and v0.0.16 have a vulnerability that allows an attacker to write content to the host filesystem and sync file contents to Kubernetes Secrets.

Understanding CVE-2020-8568

This CVE affects Kubernetes Secrets Store CSI Driver versions v0.0.15 and v0.0.16.

What is CVE-2020-8568?

This vulnerability in the Kubernetes Secrets Store CSI Driver allows an attacker to manipulate a specific resource, granting unauthorized access to write content to the host filesystem and synchronize file contents to Kubernetes Secrets.

The Impact of CVE-2020-8568

The impact of this vulnerability is rated as MEDIUM severity with a CVSS base score of 5.8. It poses a high risk to confidentiality as the attacker can access sensitive information.

Technical Details of CVE-2020-8568

Kubernetes Secrets Store CSI Driver sync/rotate directory traversal vulnerability details.

Vulnerability Description

The vulnerability allows an attacker to write content to the host filesystem and sync file contents to Kubernetes Secrets, compromising data integrity.

Affected Systems and Versions

Product: Kubernetes Secrets Store CSI Driver
Versions: v0.0.15 and v0.0.16

Exploitation Mechanism

The attacker needs the ability to modify a specific resource to exploit this vulnerability, enabling unauthorized writing to the host filesystem.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2020-8568.

Immediate Steps to Take

Update Kubernetes Secrets Store CSI Driver to a patched version.
Monitor for any unauthorized changes to Secrets.

Long-Term Security Practices

Implement least privilege access controls.
Regularly audit and review Kubernetes Secrets configurations.

Patching and Updates

Apply patches provided by Kubernetes to fix the vulnerability.