CVE-2020-8315 : What You Need to Know

In Python (CPython) 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1, an insecure dependency load upon launch on Windows 7 may result in an attacker's copy of api-ms-win-core-path-l1-1-0.dll being loaded and used instead of the system's copy. Windows 8 and later are unaffected.

Understanding CVE-2020-8315

This CVE highlights a vulnerability in Python (CPython) versions 3.6 through 3.8.1 on Windows 7 that could allow an attacker to load a malicious copy of a DLL file.

What is CVE-2020-8315?

The vulnerability in Python (CPython) versions 3.6 through 3.8.1 on Windows 7 allows an attacker to load and use their copy of a specific DLL file instead of the system's copy, potentially leading to malicious activities.

The Impact of CVE-2020-8315

This vulnerability could be exploited by attackers to execute arbitrary code, compromise system integrity, and potentially gain unauthorized access to the affected system.

Technical Details of CVE-2020-8315

This section provides more technical insights into the vulnerability.

Vulnerability Description

The insecure dependency load in Python (CPython) versions 3.6 through 3.8.1 on Windows 7 allows an attacker's copy of api-ms-win-core-path-l1-1-0.dll to be loaded and used instead of the system's copy.

Affected Systems and Versions

Python (CPython) 3.6 through 3.6.10 on Windows 7
Python (CPython) 3.7 through 3.7.6 on Windows 7
Python (CPython) 3.8 through 3.8.1 on Windows 7

Exploitation Mechanism

The vulnerability occurs due to an insecure dependency load during the launch process on Windows 7, enabling an attacker to substitute the system's DLL file with a malicious copy.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Update Python to a patched version that addresses the insecure dependency load issue.
Monitor system activities for any signs of unauthorized DLL loading.

Long-Term Security Practices

Regularly update Python and other software to the latest secure versions.
Implement robust security measures to prevent unauthorized access and code execution.

Patching and Updates

Apply patches provided by Python to fix the vulnerability and prevent potential exploitation.