CVE-2017-7932 : Vulnerability Insights and Analysis

A vulnerability related to certificate validation has been identified in multiple NXP devices, potentially allowing bypassing of signature verification under specific conditions.

Understanding CVE-2017-7932

What is CVE-2017-7932?

An improper certificate validation issue affects various NXP i.MX product families, enabling the execution of an unsigned image if security settings are enabled.

The Impact of CVE-2017-7932

The vulnerability could be exploited to bypass signature verification, leading to the execution of unauthorized code on affected devices.

Technical Details of CVE-2017-7932

Vulnerability Description

The flaw allows the bypassing of signature verification using a crafted certificate on NXP i.MX devices.

Affected Systems and Versions

NXP i.MX 28, i.MX 50, i.MX 53, i.MX 7Solo, i.MX 7Dual, Vybrid VF3xx, Vybrid VF5xx, Vybrid VF6xx, i.MX 6ULL, i.MX 6UltraLite, i.MX 6SoloLite, i.MX 6Solo, i.MX 6DualLite, i.MX 6SoloX, i.MX 6Dual, i.MX 6Quad, i.MX 6DualPlus, i.MX 6QuadPlus.

Exploitation Mechanism

By utilizing a specially crafted certificate, attackers can exploit the security flaw to execute unsigned images on the affected devices.

Mitigation and Prevention

Immediate Steps to Take

Disable security settings if not required to reduce the risk of exploitation.
Implement network segmentation to limit access to vulnerable devices.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Apply patches and updates provided by NXP to address the certificate validation vulnerability.