CVE-2019-3787 : Vulnerability Insights and Analysis

Cloud Foundry UAA, versions prior to 73.0.0, automatically appends "unknown.org" to a user's email address if not provided, potentially leading to security vulnerabilities.

Understanding CVE-2019-3787

In May 2019, CVE-2019-3787 was published, highlighting a security issue in Cloud Foundry UAA versions before 73.0.0.

What is CVE-2019-3787?

In versions of Cloud Foundry UAA prior to 73.0.0, when a user's email address was missing and their username lacked the "@" character, the UAA would add "unknown.org" as the domain to the email. This action could expose users to potential security risks, such as unauthorized access to their accounts.

The Impact of CVE-2019-3787

The vulnerability could allow attackers to gain full control over a user's account by exploiting the loophole in the email address generation process.

Technical Details of CVE-2019-3787

CVE-2019-3787 has the following technical details:

Vulnerability Description

The vulnerability stems from Cloud Foundry UAA automatically assigning the domain "unknown.org" to user email addresses under specific conditions, potentially exposing users to account compromise.

Affected Systems and Versions

Product: UAA Release (OSS)
Vendor: Cloud Foundry
Versions Affected: All versions prior to v73.0.0

Exploitation Mechanism

Exploiting this vulnerability involves manipulating the email address generation process to gain unauthorized access to user accounts.

Mitigation and Prevention

To address CVE-2019-3787, consider the following steps:

Immediate Steps to Take

Upgrade Cloud Foundry UAA to version 73.0.0 or newer to mitigate the vulnerability.
Encourage users to provide valid email addresses to prevent the automatic addition of "unknown.org."

Long-Term Security Practices

Regularly update and patch software to address security vulnerabilities promptly.
Educate users on the importance of providing accurate and secure account information.

Patching and Updates

Cloud Foundry users should apply patches and updates provided by the vendor to ensure system security.