CVE-2017-18391 Explained : Impact and Mitigation

A vulnerability in cPanel versions prior to 68.0.15 allows attackers to briefly access backup files due to their world-readable status.

Understanding CVE-2017-18391

This CVE identifies a security issue in cPanel software that could be exploited by attackers.

What is CVE-2017-18391?

cPanel versions before 68.0.15 have a vulnerability (SEC-323) that enables attackers to temporarily access backup files because of their world-readable status.

The Impact of CVE-2017-18391

The vulnerability could lead to unauthorized access to sensitive backup files, potentially compromising data security.

Technical Details of CVE-2017-18391

This section provides more technical insights into the CVE.

Vulnerability Description

Attackers can exploit the vulnerability in cPanel versions earlier than 68.0.15 to read backup files briefly due to their world-readable status.

Affected Systems and Versions

Affected Product: cPanel
Vulnerable Versions: Prior to 68.0.15

Exploitation Mechanism

The vulnerability allows attackers to access backup files during a short time interval when they are world-readable.

Mitigation and Prevention

Protecting systems from this vulnerability is crucial.

Immediate Steps to Take

Update cPanel to version 68.0.15 or later to patch the vulnerability.
Restrict access to backup files to authorized personnel only.

Long-Term Security Practices

Regularly monitor and audit file permissions to ensure sensitive files are not world-readable.
Implement access controls and encryption for backup files to enhance security.

Patching and Updates

Stay informed about security updates for cPanel and promptly apply patches to mitigate known vulnerabilities.