CVE-2021-38616 Explained : Impact and Mitigation

In Eigen NLP 3.10.1, a lack of access control on the /auth/v1/user/{user-guid}/ user edition endpoint could permit any logged-in user to increase their own permissions via a user_permissions array in a PATCH request, allowing a guest user to modify other users' profiles.

Understanding CVE-2021-38616

This section will discuss the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-38616?

CVE-2021-38616 refers to a vulnerability in Eigen NLP 3.10.1 that enables unauthorized users to elevate their privileges by exploiting a specific user edition endpoint.

The Impact of CVE-2021-38616

The vulnerability poses a high severity risk as it allows attackers to manipulate user permissions and profiles, compromising the integrity of the system.

Technical Details of CVE-2021-38616

This section will outline the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The lack of access control in the user edition endpoint of Eigen NLP 3.10.1 enables any logged-in user to enhance their permissions through a PATCH request.

Affected Systems and Versions

Eigen NLP version 3.10.1 is confirmed to be affected by this vulnerability, potentially impacting systems using this specific version.

Exploitation Mechanism

By leveraging the user_permissions array in a PATCH request, guest users can manipulate user profiles and permissions, expanding their access beyond the intended scope.

Mitigation and Prevention

This section will provide guidance on immediate steps to take and long-term security practices to enhance system defenses.

Immediate Steps to Take

Users are advised to restrict access to the vulnerable endpoint, monitor user activities closely, and apply security patches promptly.

Long-Term Security Practices

Implementing stringent access controls, conducting regular security audits, and educating users on secure practices are essential for long-term security.

Patching and Updates

Vendor-supplied patches addressing the access control issue in Eigen NLP 3.10.1 should be applied immediately to mitigate the risk of unauthorized privilege escalation.