CVE-2021-41111 Explained : Impact and Mitigation
Discover the impact of CVE-2021-41111 in Rundeck versions prior to 3.4.5 and 3.3.15. Learn how an authenticated user can exploit an authorization bypass to access and trigger webhooks.
Rundeck prior to versions 3.4.5 and 3.3.15 is affected by an authorization bypass vulnerability allowing an authenticated user to reveal and trigger webhooks across projects.
Understanding CVE-2021-41111
Rundeck contains a vulnerability that could potentially expose sensitive webhook tokens across projects, impacting the security of the system.
What is CVE-2021-41111?
The CVE-2021-41111 vulnerability in Rundeck before versions 3.4.5 and 3.3.15 enables an authenticated user to bypass authorization and access webhook definitions and tokens from one project to another, potentially leading to unauthorized webhook triggering.
The Impact of CVE-2021-41111
The impact of this vulnerability varies based on the trust level of authenticated users and the presence of sensitive webhooks triggering actions, emphasizing the importance of prompt mitigation to prevent potential misuse.
Technical Details of CVE-2021-41111
Rundeck's CVE-2021-41111 vulnerability has specific technical details that explain its nature and potential risks.
Vulnerability Description
The vulnerability allows an authenticated user to read webhooks in one project and use the information to reveal and trigger webhooks in separate projects, potentially leading to unauthorized actions.
Affected Systems and Versions
- Rundeck versions < 3.3.15 are affected.
- Rundeck versions >= 3.4.0, < 3.4.5 are also vulnerable to this authorization bypass issue.
Exploitation Mechanism
To exploit this vulnerability, an authenticated user with permissions to read webhooks in one project can craft a request to expose webhook definitions and tokens across projects, potentially enabling unauthorized webhook triggering.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the CVE-2021-41111 vulnerability in Rundeck.
Immediate Steps to Take
- Update Rundeck to version 3.4.5 or 3.3.15 to patch the vulnerability.
- Review and tighten user permissions related to webhook access.
Long-Term Security Practices
- Regularly review and update access controls within Rundeck.
- Conduct security audits to identify and address potential vulnerabilities proactively.
Patching and Updates
- Apply the latest patches and updates provided by Rundeck to ensure ongoing protection against security threats.