CVE-2017-12306 Explained : Impact and Mitigation

Cisco Spark Board Upgrade Procedure Weakness

Understanding CVE-2017-12306

Cisco Spark Board is affected by a vulnerability that allows a local attacker with authentication to install an unverified upgrade package, known as Signature Verification Bypass.

What is CVE-2017-12306?

The vulnerability in the upgrade process of Cisco Spark Board enables an authenticated local attacker to install an unverified upgrade package due to inadequate validation of the upgrade package. This weakness is also referred to as Signature Verification Bypass.

The Impact of CVE-2017-12306

Successful exploitation of this vulnerability could allow an attacker to install customized firmware onto the Spark Board, compromising its integrity and security.

Technical Details of CVE-2017-12306

Vulnerability Description

The vulnerability arises from insufficient validation of upgrade packages, allowing attackers to supply and install unauthorized firmware on the Spark Board.

Affected Systems and Versions

Product: Cisco Spark Board
Version: Cisco Spark Board

Exploitation Mechanism

Attackers need local access and authentication to exploit the vulnerability by providing a controlled upgrade package.

Mitigation and Prevention

Immediate Steps to Take

Apply patches and updates provided by Cisco to address the vulnerability.
Monitor and restrict access to the upgrade process to prevent unauthorized installations.

Long-Term Security Practices

Regularly update and patch all software and firmware to prevent similar vulnerabilities.
Implement strict access controls and authentication mechanisms to limit unauthorized access.
Conduct security assessments and audits regularly to identify and mitigate potential weaknesses.

Patching and Updates

Cisco has released security advisories and patches to fix the vulnerability. Ensure timely application of these updates to secure the Spark Board.