CVE-2021-43832 : Vulnerability Insights and Analysis

Spinnaker is an open source, multi-cloud continuous delivery platform with an improper access control vulnerability that allows arbitrary pipeline creation and execution without authentication.

Understanding CVE-2021-43832

What is CVE-2021-43832?

Spinnaker's vulnerability enables unauthorized users with access to the gate endpoint to create and execute pipelines without authentication, potentially leading to remote execution and unauthorized resource deployment across accounts.

The Impact of CVE-2021-43832

This critical vulnerability poses a high risk to confidentiality and integrity, with a base score of 10 according to CVSS v3.1. It allows for unauthorized pipeline creation and execution, bypassing security measures within Spinnaker.

Technical Details of CVE-2021-43832

Vulnerability Description

The vulnerability in Spinnaker results from improper permissions, allowing unauthorized pipeline creation and execution through the gate endpoint without authentication, potentially leading to unauthorized resource deployment.

Affected Systems and Versions

Affected version: >= 1.26.0, < 1.26.7, < 1.25.8

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Changed
Impact: High confidentiality and integrity, no availability impact

Mitigation and Prevention

Immediate Steps to Take

Upgrade to the latest Spinnaker release with patches
Enable Role-based access control (RBAC) on all accounts and applications
Restrict application creation through appropriate wildcards

Long-Term Security Practices

Regularly update and patch Spinnaker to prevent vulnerabilities

Patching and Updates

Ensure all users are running the latest supported versions of Spinnaker to mitigate the risk of unauthorized pipeline creation and execution.