CVE-2020-16250 : What You Need to Know

HashiCorp Vault and Vault Enterprise versions 0.7.1 and newer, when configured with the AWS IAM auth method, may be vulnerable to authentication bypass. Fixed in 1.2.5, 1.3.8, 1.4.4, and 1.5.1.

Understanding CVE-2020-16250

HashiCorp Vault and Vault Enterprise versions 0.7.1 and newer, when using the AWS IAM auth method, are susceptible to an authentication bypass vulnerability.

What is CVE-2020-16250?

This CVE identifies a security issue in HashiCorp Vault and Vault Enterprise versions 0.7.1 and above that could allow unauthorized access due to a misconfiguration with the AWS IAM authentication method.

The Impact of CVE-2020-16250

The vulnerability could lead to an authentication bypass, potentially allowing unauthorized users to access sensitive information stored in HashiCorp Vault.

Technical Details of CVE-2020-16250

HashiCorp Vault and Vault Enterprise versions 0.7.1 and newer are affected by this vulnerability.

Vulnerability Description

When configured with the AWS IAM auth method, these versions may allow an attacker to bypass authentication mechanisms.

Affected Systems and Versions

HashiCorp Vault versions 0.7.1 and newer
HashiCorp Vault Enterprise versions 0.7.1 and newer

Exploitation Mechanism

The vulnerability can be exploited by leveraging the misconfiguration of the AWS IAM auth method to bypass authentication controls.

Mitigation and Prevention

To address CVE-2020-16250, follow these steps:

Immediate Steps to Take

Upgrade HashiCorp Vault to versions 1.2.5, 1.3.8, 1.4.4, or 1.5.1, where the issue is resolved.
Review and adjust the AWS IAM auth method configuration to prevent authentication bypass.

Long-Term Security Practices

Regularly monitor and update HashiCorp Vault and Vault Enterprise to the latest secure versions.
Implement multi-factor authentication and strong access controls to enhance security.

Patching and Updates

Apply the necessary patches provided by HashiCorp to fix the vulnerability and enhance system security.