CVE-2020-36772 : Vulnerability Insights and Analysis

CVE-2020-36772, assigned by Red Hat, affects CloudLinux OS CageFS versions 7.0.8-2 and below. The vulnerability allows local users to read and write arbitrary files outside the CageFS environment.

Understanding CVE-2020-36772

This CVE impacts the security of CloudLinux OS CageFS.

What is CVE-2020-36772?

CVE-2020-36772 is a vulnerability in CloudLinux OS CageFS that inadequately restricts file paths supplied to the sendmail proxy command, enabling local users to access files outside the CageFS environment.

The Impact of CVE-2020-36772

The vulnerability can be exploited by local users to read and write arbitrary files, compromising the security of the system and potentially leading to unauthorized access.

Technical Details of CVE-2020-36772

This section provides technical details of the CVE.

Vulnerability Description

CloudLinux OS CageFS 7.0.8-2 and below allow insufficient restriction of file paths in the sendmail proxy command, enabling unauthorized file access.

Affected Systems and Versions

Vendor: CloudLinux OS
Product: CageFS
Affected Versions: 7.0.8-2
Unaffected Version: 7.1.1-1

Exploitation Mechanism

The vulnerability arises from the inadequate validation of file paths supplied to the sendmail proxy command, allowing local users to access files outside the intended environment.

Mitigation and Prevention

Protect your system from CVE-2020-36772 with these steps.

Immediate Steps to Take

Upgrade CageFS to version 7.1.1-1 or later to mitigate the vulnerability.
Monitor system logs for any suspicious file access activities.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access to sensitive files.
Regularly update and patch software to address security vulnerabilities.
Conduct security audits to identify and remediate potential weaknesses.

Patching and Updates

Apply security patches provided by CloudLinux promptly to address CVE-2020-36772 and other vulnerabilities.