CVE-2019-19687 : Vulnerability Insights and Analysis

OpenStack Keystone versions 15.0.0 and 16.0.0 are affected by a vulnerability in the list credentials API that can lead to data leakage. Users with a role on a project can access the /v3/credentials API and view other users' credentials when enforce_scope is set to false, potentially exposing sensitive information like Time-based One Time Passwords (TOTP).

Understanding CVE-2019-19687

This CVE involves a security issue in OpenStack Keystone versions 15.0.0 and 16.0.0 that allows unauthorized access to user credentials.

What is CVE-2019-19687?

The vulnerability in the list credentials API of OpenStack Keystone versions 15.0.0 and 16.0.0 enables users with a project role to view credentials of other users when enforce_scope is disabled, leading to potential data leakage.

The Impact of CVE-2019-19687

The vulnerability can result in the exposure of sensitive information such as TOTP used for sign-on, posing a risk to data confidentiality and user privacy.

Technical Details of CVE-2019-19687

OpenStack Keystone CVE-2019-19687 involves the following technical aspects:

Vulnerability Description

The list credentials API in OpenStack Keystone versions 15.0.0 and 16.0.0 allows unauthorized users to access and view other users' credentials when enforce_scope is set to false, potentially leading to data leakage.

Affected Systems and Versions

OpenStack Keystone versions 15.0.0 and 16.0.0

Exploitation Mechanism

Users with a role on a project can exploit the vulnerability by accessing the /v3/credentials API when enforce_scope is disabled, gaining unauthorized access to sensitive user information.

Mitigation and Prevention

To address CVE-2019-19687, consider the following mitigation strategies:

Immediate Steps to Take

Enable enforce_scope in OpenStack Keystone to restrict unauthorized access to user credentials.
Regularly monitor and audit user access to sensitive APIs to detect any unauthorized activities.

Long-Term Security Practices

Implement least privilege access controls to limit user permissions based on their roles and responsibilities.
Conduct regular security training for users to raise awareness about data protection and privacy.

Patching and Updates

Apply patches or updates provided by OpenStack to fix the vulnerability and enhance the security of the Keystone API.