CVE-2019-3777 : Vulnerability Insights and Analysis

Pivotal Application Service (PAS) versions 2.2.x to 2.4.x are affected by a vulnerability in the Apps Manager component that fails to verify SSL certificates. This flaw could allow a remote attacker to intercept access tokens, potentially leading to unauthorized access to user resources.

Understanding CVE-2019-3777

This CVE was published on February 26, 2019, and has a high severity base score of 8.

What is CVE-2019-3777?

Prior to versions 2.2.12, 2.3.7, and 2.4.3, Pivotal Application Service (PAS) is vulnerable due to unverified SSL certificates in its Apps Manager. Attackers could exploit this to intercept access tokens and gain unauthorized access to user resources.

The Impact of CVE-2019-3777

CVSS Score: 8 (High Severity)
Attack Vector: Network
Attack Complexity: High
Confidentiality Impact: High
Integrity Impact: High
User Interaction: Required

Technical Details of CVE-2019-3777

Apps Manager unverified SSL certs in Cloud Controller proxy

Vulnerability Description

The vulnerability arises from the failure of the cloud controller proxy to authenticate SSL certificates, potentially allowing interception of access tokens.

Affected Systems and Versions

Apps Manager version 666, less than 666.0.19
Apps Manager version 665, less than 665.0.26
Apps Manager version 667, less than 667.0.5
Pivotal Application Service version 2.4, less than 2.4.3
Pivotal Application Service version 2.3, less than 2.3.7
Pivotal Application Service version 2.2, less than 2.2.12

Exploitation Mechanism

A remote attacker could hijack the Cloud Controller's DNS record to intercept access tokens transmitted to the Cloud Controller, gaining unauthorized access to user resources.

Mitigation and Prevention

Immediate Steps to Take:

Update Pivotal Application Service to versions 2.2.12, 2.3.7, or 2.4.3
Monitor network traffic for any suspicious activity

Long-Term Security Practices:

Implement proper SSL certificate validation mechanisms
Regularly review and update security configurations

Patching and Updates:

Apply security patches provided by Pivotal