CVE-2020-12355 : What You Need to Know

Intel(R) TXE versions before 4.0.30 are affected by an authentication bypass vulnerability that may allow an unauthenticated user to escalate privileges via physical access.

Understanding CVE-2020-12355

This CVE identifies an authentication bypass vulnerability in Intel(R) TXE versions before 4.0.30 that could lead to privilege escalation.

What is CVE-2020-12355?

An authentication bypass vulnerability in the RPMB protocol message authentication subsystem in Intel(R) TXE versions before 4.0.30 may enable an unauthenticated user to potentially escalate privileges through physical access.

The Impact of CVE-2020-12355

The vulnerability could allow an unauthorized user to elevate their privileges, posing a significant security risk to affected systems.

Technical Details of CVE-2020-12355

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability involves an authentication bypass through capture-replay in the RPMB protocol message authentication subsystem in Intel(R) TXE versions before 4.0.30.

Affected Systems and Versions

Product: Intel(R) TXE
Vendor: Not applicable
Versions affected: versions before 4.0.30

Exploitation Mechanism

The vulnerability could be exploited by an unauthenticated user with physical access to potentially escalate their privileges on the system.

Mitigation and Prevention

To address CVE-2020-12355, follow these mitigation steps:

Immediate Steps to Take

Apply patches or updates provided by Intel.
Implement strong physical security measures to prevent unauthorized access.

Long-Term Security Practices

Regularly update and patch all software and firmware to prevent vulnerabilities.
Implement network segmentation and access controls to limit unauthorized access.

Patching and Updates

Ensure that Intel(R) TXE is updated to version 4.0.30 or later to mitigate the authentication bypass vulnerability.