CVE-2019-14238 : Security Advisory and Response

A vulnerability on STMicroelectronics STM32F7 devices allows bypassing Proprietary Code Read Out Protection (PCROP) using a debugging probe through the Instruction Tightly Coupled Memory (ITCM) bus.

Understanding CVE-2019-14238

This CVE involves circumventing software-based IP protection on STM32F7 devices.

What is CVE-2019-14238?

This vulnerability enables attackers to overcome PCROP on STM32F7 devices by leveraging a debugging probe through the ITCM bus.

The Impact of CVE-2019-14238

The exploitation of this vulnerability can lead to the compromise of software IP protection mechanisms on affected devices.

Technical Details of CVE-2019-14238

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows attackers to bypass PCROP on STMicroelectronics STM32F7 devices using a debugging probe via the ITCM bus.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: Not applicable

Exploitation Mechanism

Attackers exploit this vulnerability by utilizing a debugging probe through the ITCM bus to circumvent PCROP on STM32F7 devices.

Mitigation and Prevention

Protecting systems from CVE-2019-14238 requires specific actions to mitigate the risk.

Immediate Steps to Take

Implement strict access controls to prevent unauthorized access to debugging probes.
Regularly monitor and audit debugging activities on STM32F7 devices.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Stay informed about security updates and patches released by STMicroelectronics.

Patching and Updates

Apply relevant security patches and updates provided by STMicroelectronics to address the vulnerability and enhance device security.