CVE-2017-8055 : What You Need to Know

WatchGuard Fireware allows user enumeration, specifically in the Firebox XML-RPC login handler. This vulnerability, identified as CVE-2017-8055, impacts Fireware versions prior to v11.12.1, enabling attackers to identify valid usernames on affected Firebox devices.

Understanding CVE-2017-8055

This CVE relates to a user enumeration vulnerability in WatchGuard Fireware, potentially exposing valid usernames on Firebox devices.

What is CVE-2017-8055?

The feature known as WatchGuard Fireware enables the enumeration of users, specifically in the Firebox XML-RPC login handler. In previous versions such as Fireware v11.12.1 and earlier, when a login request with a blank password is sent to the XML-RPC agent, it generates differing responses for valid and invalid usernames. This vulnerability can be exploited by an attacker to identify valid usernames on a Firebox device that is impacted by this.

The Impact of CVE-2017-8055

The vulnerability allows attackers to enumerate valid usernames on Firebox devices, potentially aiding in further targeted attacks.

Technical Details of CVE-2017-8055

This section provides detailed technical insights into the CVE-2017-8055 vulnerability.

Vulnerability Description

The vulnerability in WatchGuard Fireware allows for user enumeration through the Firebox XML-RPC login handler, exposing valid usernames.

Affected Systems and Versions

WatchGuard Fireware versions prior to v11.12.1 are affected by this vulnerability.

Exploitation Mechanism

By sending a login request with a blank password to the XML-RPC agent, attackers can distinguish responses for valid and invalid usernames, facilitating the identification of valid usernames.

Mitigation and Prevention

Protecting systems from CVE-2017-8055 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update WatchGuard Fireware to version 11.12.2 or later to mitigate this vulnerability.
Monitor network logs for any suspicious user enumeration activities.

Long-Term Security Practices

Implement strong password policies to prevent unauthorized access.
Regularly review and update security configurations to address emerging threats.

Patching and Updates

Stay informed about security updates and patches released by WatchGuard to address vulnerabilities like CVE-2017-8055.