CVE-2017-11191 Explained : Impact and Mitigation

FreeIPA 4.x with API version 2.213 allows remote authenticated users to bypass account-locking restrictions, despite the vendor's denial of the issue.

Understanding CVE-2017-11191

The presence of API version 2.213 in FreeIPA 4.x enables remote authenticated users to bypass the designated account-locking restrictions by utilizing an older session ID.

What is CVE-2017-11191?

The vulnerability in FreeIPA 4.x allows authenticated users to bypass account-locking restrictions by using an old session ID for the same user account.

The Impact of CVE-2017-11191

This vulnerability could potentially lead to unauthorized access and compromise of user accounts within FreeIPA 4.x instances.

Technical Details of CVE-2017-11191

FreeIPA 4.x with API version 2.213 allows remote authenticated users to bypass intended account-locking restrictions via an unlock action with an old session ID.

Vulnerability Description

The issue enables users to perform an unlock action using an older session ID from a previous session, bypassing account-locking restrictions.

Affected Systems and Versions

Product: FreeIPA 4.x
Vendor: N/A
Version: N/A

Exploitation Mechanism

Remote authenticated users exploit an older session ID to unlock accounts, circumventing account-locking restrictions.

Mitigation and Prevention

Immediate Steps to Take:

Monitor and restrict access to FreeIPA instances.
Implement strong authentication mechanisms.
Regularly review and update security configurations. Long-Term Security Practices:
Conduct regular security audits and assessments.
Stay informed about vendor security updates and patches.
Educate users on secure authentication practices.
Implement multi-factor authentication where possible.
Enforce strong password policies.

Patching and Updates

Stay informed about any official patches or updates released by the vendor to address this vulnerability.