CVE-2020-11707 : Vulnerability Insights and Analysis

An issue was discovered in ProVide (formerly zFTPServer) through 13.1 where it doesn't enforce permission over Windows Symlinks or Junctions, allowing a low-privileged user to escape the sandbox.

Understanding CVE-2020-11707

This CVE identifies a security vulnerability in ProVide (formerly zFTPServer) that could be exploited by a non-admin user to break out of the sandbox environment.

What is CVE-2020-11707?

The vulnerability in ProVide (formerly zFTPServer) through version 13.1 allows a low-privileged user to create a Junction Link in a directory they control, bypassing sandbox restrictions.

The Impact of CVE-2020-11707

The vulnerability enables a non-admin user to escalate privileges and potentially access unauthorized areas, compromising system security.

Technical Details of CVE-2020-11707

This section provides detailed technical information about the CVE.

Vulnerability Description

The issue in ProVide (formerly zFTPServer) through 13.1 allows users to create Junction Links without proper permission enforcement, leading to sandbox escape.

Affected Systems and Versions

Product: ProVide (formerly zFTPServer)
Versions affected: Through 13.1

Exploitation Mechanism

Low-privileged users can craft Junction Links in directories they control.

Mitigation and Prevention

Protect your systems from CVE-2020-11707 with the following steps:

Immediate Steps to Take

Update ProVide (formerly zFTPServer) to a patched version.
Restrict user permissions to prevent unauthorized access.

Long-Term Security Practices

Regularly monitor and audit file system permissions.
Educate users on secure file handling practices.

Patching and Updates

Apply security patches and updates provided by ProVide to address the vulnerability.