CVE-2020-28337 : Vulnerability Insights and Analysis

A directory traversal issue in the Utils/Unzip module in Microweber through 1.1.20 allows an authenticated attacker to gain remote code execution via the backup restore feature.

Understanding CVE-2020-28337

What is CVE-2020-28337?

CVE-2020-28337 is a vulnerability in Microweber CMS that enables an authenticated attacker to execute remote code by exploiting a directory traversal flaw in the Utils/Unzip module.

The Impact of CVE-2020-28337

This vulnerability allows an attacker to gain unauthorized access and execute malicious code on the affected system, potentially leading to data theft, system compromise, and further exploitation.

Technical Details of CVE-2020-28337

Vulnerability Description

The issue arises from improper handling of file paths in the backup restore feature, allowing an attacker to upload a specially crafted ZIP file with malicious paths to execute arbitrary code.

Affected Systems and Versions

Product: Microweber CMS
Versions: up to 1.1.20

Exploitation Mechanism

To exploit this vulnerability, an attacker needs the credentials of an administrative user to upload a ZIP file with crafted paths, move it to the backup directory, and trigger a restore operation.

Mitigation and Prevention

Immediate Steps to Take

Update Microweber CMS to the latest version to patch the vulnerability.
Restrict access to administrative privileges to minimize the attack surface.
Monitor and review backup and restore activities for suspicious behavior.

Long-Term Security Practices

Regularly review and update security configurations and access controls.
Conduct security training for users to recognize and report suspicious activities.

Patching and Updates

Apply security patches and updates promptly to address known vulnerabilities and enhance system security.