CVE-2020-8115 : What You Need to Know

A reflected XSS vulnerability has been discovered in the publicly accessible afr.php delivery script of Revive Adserver <= 5.0.3 by Jacopo Tediosi. The vulnerability could allow an attacker to execute arbitrary JavaScript code on the victim's browser.

Understanding CVE-2020-8115

This CVE involves a Cross-site Scripting (XSS) vulnerability in Revive Adserver.

What is CVE-2020-8115?

The vulnerability allows attackers to execute arbitrary JavaScript code on a victim's browser by exploiting a flaw in the afr.php delivery script of Revive Adserver.

The Impact of CVE-2020-8115

The vulnerability could potentially lead to unauthorized access to the admin interface by stealing session identifiers.

Technical Details of CVE-2020-8115

This section provides more technical insights into the vulnerability.

Vulnerability Description

The query string sent to the www/delivery/afr.php script was not properly escaped in a JavaScript context, enabling attackers to inject and execute malicious JavaScript code.

Affected Systems and Versions

Affected version: Revive Adserver <= 5.0.3
Fixed version: v5.0.4

Exploitation Mechanism

Under specific circumstances, attackers could exploit the vulnerability to steal session identifiers and potentially gain access to the admin interface.

Mitigation and Prevention

Protect your systems from CVE-2020-8115 with these mitigation strategies.

Immediate Steps to Take

Upgrade Revive Adserver to version v5.0.4, the fixed version.
Monitor and restrict access to the admin interface.
Implement proper input validation and output encoding to prevent XSS attacks.

Long-Term Security Practices

Regularly update and patch software to address security vulnerabilities.
Conduct security audits and penetration testing to identify and mitigate potential risks.

Patching and Updates

Ensure timely installation of security patches and updates to prevent exploitation of known vulnerabilities.