CVE-2017-11400 : What You Need to Know

A vulnerability has been identified on the Belden Hirschmann Tofino Xenon Security Appliance prior to version 03.2.00, allowing a local attacker to exploit an incomplete firmware signature.

Understanding CVE-2017-11400

This CVE involves a security flaw in the Belden Hirschmann Tofino Xenon Security Appliance that can be exploited by a malicious actor within the local network.

What is CVE-2017-11400?

The vulnerability arises from an incomplete firmware signature, enabling an attacker to install unauthorized and manipulated data, impacting the equipment's kernel and file system.

The Impact of CVE-2017-11400

The flaw allows an attacker to compromise the security of the appliance by injecting unauthorized data, potentially leading to system compromise and unauthorized access.

Technical Details of CVE-2017-11400

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The issue stems from the appliance_config file being appropriately signed, while the .tar.sec file remains unsigned, enabling the installation of manipulated data.

Affected Systems and Versions

Belden Hirschmann Tofino Xenon Security Appliance prior to version 03.2.00

Exploitation Mechanism

A local attacker within the network can exploit the incomplete firmware signature to inject unauthorized data.

Mitigation and Prevention

Protecting systems from CVE-2017-11400 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the appliance to version 03.2.00 or later to mitigate the vulnerability.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Implement network segmentation to limit the impact of potential attacks.
Regularly review and update firmware and security configurations.

Patching and Updates

Apply patches and updates provided by the vendor to address the incomplete firmware signature issue.