CVE-2017-1000376 Explained : Impact and Mitigation

This CVE involves a vulnerability in libffi that allows for easier exploitation of arbitrary code execution through stack overwriting. The issue affects versions preceding 3.1 on 32-bit x86 systems.

Understanding CVE-2017-1000376

This CVE was made public on June 19, 2017, and has been updated as of January 15, 2020.

What is CVE-2017-1000376?

CVE-2017-1000376 is a vulnerability in libffi that enables attackers to trigger arbitrary code execution by overwriting the stack. It is important to note that libffi is utilized by various other libraries.

The Impact of CVE-2017-1000376

The vulnerability affects libffi versions preceding 3.1 on 32-bit x86 systems. The initial report stating version 3.2.1 was affected was found to be inaccurate. Upstream developers are believed to have resolved this issue in version 3.1.

Technical Details of CVE-2017-1000376

This section provides more technical insights into the vulnerability.

Vulnerability Description

The executable stack in libffi is configured in a way that facilitates easier exploitation of arbitrary code execution through stack overwriting.

Affected Systems and Versions

Vulnerable versions: Preceding 3.1 on 32-bit x86 systems

Exploitation Mechanism

Attackers can exploit this vulnerability by overwriting the stack, enabling them to trigger arbitrary code execution.

Mitigation and Prevention

Protecting systems from CVE-2017-1000376 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update libffi to version 3.1 or later
Monitor for any unusual stack overwriting activities

Long-Term Security Practices

Regularly update software and libraries
Implement stack protection mechanisms

Patching and Updates

Ensure all systems are patched with the latest version of libffi to mitigate the vulnerability.