CVE-2019-11270 : What You Need to Know

Cloud Foundry UAA versions prior to v73.4.0 contain a vulnerability that allows a client with 'clients.write' authority to create clients with unauthorized scopes.

Understanding CVE-2019-11270

This CVE involves a security flaw in Cloud Foundry UAA versions prior to v73.4.0 that enables a malicious client to bypass restrictions on client creation.

What is CVE-2019-11270?

The vulnerability in Cloud Foundry UAA allows a client with 'clients.write' authority to create clients with scopes beyond the original creator's permissions.

The Impact of CVE-2019-11270

CVSS Score: 7.3 (High)
Attack Vector: Network
Attack Complexity: High
Privileges Required: High
User Interaction: Required
Scope: Changed
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: None
This vulnerability poses a high risk as it allows unauthorized clients to be created with elevated privileges.

Technical Details of CVE-2019-11270

Cloud Foundry UAA clients.write vulnerability details.

Vulnerability Description

The flaw in UAA versions prior to v73.4.0 enables a harmful client to create clients with unauthorized scopes.

Affected Systems and Versions

Affected Product: UAA Release (OSS)
Vendor: Cloud Foundry
Vulnerable Versions: Prior to v73.4.0

Exploitation Mechanism

The vulnerability allows a client with 'clients.write' authority to circumvent limitations and create clients with unauthorized scopes.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-11270 vulnerability.

Immediate Steps to Take

Upgrade Cloud Foundry UAA to version v73.4.0 or later.
Monitor client creation activities for suspicious behavior.

Long-Term Security Practices

Regularly review and update client permissions and scopes.
Implement least privilege access controls to limit client capabilities.

Patching and Updates

Apply security patches and updates provided by Cloud Foundry to address this vulnerability.