CVE-2018-1195 : What You Need to Know

Cloud Controller versions older than 1.46.0, cf-deployment versions older than 1.3.0, and cf-release versions older than 283 have a security flaw where Cloud Controller mistakenly accepts refresh tokens instead of access tokens for authentication.

Understanding CVE-2018-1195

In Cloud Controller versions prior to 1.46.0, cf-deployment versions prior to 1.3.0, and cf-release versions prior to 283, a vulnerability exists that allows attackers to authenticate using invalid refresh tokens.

What is CVE-2018-1195?

Cloud Controller versions prior to 1.46.0, cf-deployment versions prior to 1.3.0, and cf-release versions prior to 283 have a security flaw.
Attackers can authenticate using refresh tokens instead of access tokens due to a validation issue.

The Impact of CVE-2018-1195

Attackers can exploit this vulnerability to gain unauthorized access to systems and sensitive data.

Technical Details of CVE-2018-1195

In-depth technical information about the vulnerability.

Vulnerability Description

Cloud Controller accepts refresh tokens instead of access tokens for authentication.
This allows attackers to authenticate using invalid refresh tokens.

Affected Systems and Versions

Cloud Controller versions prior to 1.46.0
cf-deployment versions prior to 1.3.0
cf-release versions prior to 283

Exploitation Mechanism

Attackers exploit the flaw by using refresh tokens for authentication instead of access tokens.
This occurs when the refresh token lacks necessary client credentials or has been revoked.

Mitigation and Prevention

Steps to mitigate and prevent the vulnerability.

Immediate Steps to Take

Upgrade Cloud Controller to version 1.46.0 or newer.
Update cf-deployment to version 1.3.0 or above.
Ensure cf-release is version 283 or higher.
Monitor and revoke any suspicious refresh tokens.

Long-Term Security Practices

Implement multi-factor authentication.
Regularly review and update access control policies.
Conduct security training for staff on token handling best practices.

Patching and Updates

Apply patches provided by Dell EMC to fix the authentication vulnerability.