CVE-2019-13404 : Exploit Details and Defense Strategies

Python MSI installer default directory vulnerability

Understanding CVE-2019-13404

What is CVE-2019-13404?

The CVE-2019-13404 vulnerability affects the default directory for the MSI installer of Python up to version 2.7.16 on Windows, potentially enabling local users to deploy malicious code. This issue also impacts older releases of Python 3.x before version 3.5.

The Impact of CVE-2019-13404

The vulnerability can facilitate the deployment of Trojan horse code by local users due to the default directory setting of C:\Python27.

Technical Details of CVE-2019-13404

Vulnerability Description

The Python MSI installer defaults to C:\Python27 on Windows, making it easier for local users to deploy malicious code, posing a security risk.

Affected Systems and Versions

Python versions up to 2.7.16 on Windows
Older releases of Python 3.x before version 3.5

Exploitation Mechanism

The default directory setting of C:\Python27 simplifies the deployment of malicious code by local users, potentially leading to security breaches.

Mitigation and Prevention

Immediate Steps to Take

Secure access control of C:\Python27
Consider selecting an alternative directory for Python installations

Long-Term Security Practices

Regularly review and update access controls on critical directories
Implement least privilege access for users to prevent unauthorized modifications

Patching and Updates

Stay informed about security updates and patches released by Python to address this vulnerability.