CVE-2018-11083 : Security Advisory and Response

Cloud Foundry BOSH versions prior to v264.14.0, v265.7.0, v266.8.0, and v267.2.0 have a vulnerability that allows refresh tokens to be used as access tokens during UAA authentication, potentially granting unauthorized access to BOSH resources.

Understanding CVE-2018-11083

This CVE involves improper authentication in Cloud Foundry BOSH, enabling the misuse of refresh tokens as access tokens, leading to unauthorized access to BOSH resources.

What is CVE-2018-11083?

Vulnerability in Cloud Foundry BOSH allowing refresh tokens to act as access tokens during UAA authentication
Exploitable by external attackers with admin refresh tokens granted by UAA
Attackers can gain unauthorized entry to BOSH resources without proper access tokens

The Impact of CVE-2018-11083

CVSS Score: 8.4 (High)
Attack Complexity: Low
Attack Vector: Adjacent Network
Confidentiality, Integrity, and Availability Impact: High
Privileges Required: Low
User Interaction: Required
Scope: Changed

Technical Details of CVE-2018-11083

Cloud Foundry BOSH vulnerability details and affected systems.

Vulnerability Description

Allows refresh tokens to be used as access tokens during UAA authentication
Risk of unauthorized access to BOSH resources

Affected Systems and Versions

Cloud Foundry BOSH versions v264.14.0, v265.7.0, v266.8.0, and v267.2.0

Exploitation Mechanism

External attackers with admin refresh tokens granted by UAA
Gain unauthorized entry to BOSH resources without proper access tokens

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2018-11083 vulnerability.

Immediate Steps to Take

Upgrade affected BOSH versions to secure releases
Monitor and restrict access to admin refresh tokens

Long-Term Security Practices

Implement multi-factor authentication for enhanced security
Regularly review and update access control policies

Patching and Updates

Apply security patches provided by Cloud Foundry to fix the vulnerability