CVE-2019-20497 : Vulnerability Insights and Analysis

Stored cross-site scripting (XSS) vulnerability in cPanel before version 82.0.18 allows for exploitation through the WHM Backup Restoration feature (SEC-533).

Understanding CVE-2019-20497

This CVE identifies a stored XSS vulnerability in cPanel software.

What is CVE-2019-20497?

cPanel versions prior to 82.0.18 are susceptible to stored cross-site scripting (XSS) attacks via the WHM Backup Restoration feature (SEC-533).

The Impact of CVE-2019-20497

The vulnerability could allow an attacker to execute malicious scripts in the context of a user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2019-20497

This section provides technical insights into the vulnerability.

Vulnerability Description

The issue arises from inadequate input validation in the WHM Backup Restoration feature, enabling malicious script injection.

Affected Systems and Versions

Affected System: cPanel
Affected Versions: Before 82.0.18

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the WHM Backup Restoration feature, which are then executed in the context of the user's session.

Mitigation and Prevention

Protecting systems from CVE-2019-20497 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update cPanel to version 82.0.18 or later to mitigate the vulnerability.
Regularly monitor and audit user inputs to detect and prevent XSS attacks.

Long-Term Security Practices

Implement strict input validation mechanisms in web applications to prevent XSS vulnerabilities.
Educate users and administrators about the risks of XSS attacks and best security practices.

Patching and Updates

Apply security patches promptly to ensure that known vulnerabilities are addressed and mitigated effectively.