CVE-2021-28156 Explained : Impact and Mitigation

HashiCorp Consul Enterprise version 1.8.0 up to 1.9.4 audit log can be bypassed by specifically crafted HTTP events. This CVE was published on April 20, 2021.

Understanding CVE-2021-28156

This vulnerability affects HashiCorp Consul Enterprise versions 1.8.0 to 1.9.4 by allowing the audit log to be bypassed with specially crafted HTTP events.

What is CVE-2021-28156?

CVE-2021-28156 is a security vulnerability found in HashiCorp Consul Enterprise versions 1.8.0 to 1.9.4 that enables bypassing of the audit log through specific HTTP events.

The Impact of CVE-2021-28156

This vulnerability could potentially lead to unauthorized access or manipulation of sensitive data due to the improper functioning of the audit log.

Technical Details of CVE-2021-28156

HashiCorp Consul Enterprise versions 1.8.0 up to 1.9.4 are susceptible to this vulnerability.

Vulnerability Description

The issue allows attackers to circumvent the audit log by utilizing specially crafted HTTP events.

Affected Systems and Versions

HashiCorp Consul Enterprise versions 1.8.0 to 1.9.4 are impacted by this vulnerability.

Exploitation Mechanism

By sending specific HTTP events, attackers can exploit this vulnerability to bypass the audit log.

Mitigation and Prevention

It is vital to take immediate action to secure systems from the CVE-2021-28156 vulnerability.

Immediate Steps to Take

Update to HashiCorp Consul Enterprise versions 1.9.5 or 1.8.10 to mitigate the risk of audit log bypass.

Long-Term Security Practices

Regularly monitor for security advisories and promptly apply patches to ensure system integrity and security.

Patching and Updates

Stay informed about security updates released by HashiCorp and apply them as soon as they are available to safeguard against vulnerabilities.