CVE-2020-25082 : Vulnerability Insights and Analysis

A vulnerability in Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could allow an attacker with physical access to extract an ECC private key through a side-channel attack.

Understanding CVE-2020-25082

This CVE involves a security issue in Nuvoton's Trusted Platform Module that could lead to the extraction of sensitive cryptographic keys.

What is CVE-2020-25082?

The vulnerability allows attackers with physical access to the device to exploit a side-channel attack against ECDSA, resulting in the extraction of an ECC private key due to an Observable Timing Discrepancy.

The Impact of CVE-2020-25082

CVSS Base Score: 3.8 (Low Severity)
Confidentiality Impact: High
Attack Complexity: High
Privileges Required: High
Attack Vector: Physical
No Impact on Availability or Integrity

Technical Details of CVE-2020-25082

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

The vulnerability allows for the extraction of an ECC private key through a side-channel attack against ECDSA due to an Observable Timing Discrepancy.

Affected Systems and Versions

Affected Version: NPCT75x 7.2.x before 7.2.2.0

Exploitation Mechanism

The vulnerability can be exploited by an attacker with physical access to the Nuvoton Trusted Platform Module, enabling them to extract sensitive cryptographic keys.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Nuvoton Trusted Platform Module to version 7.2.2.0 or later.
Implement physical security measures to prevent unauthorized access to the device.

Long-Term Security Practices

Regularly monitor and audit physical access to sensitive devices.
Employ cryptographic key protection mechanisms to mitigate side-channel attacks.

Patching and Updates

Apply patches and updates provided by Nuvoton to address the vulnerability.