CVE-2020-8143 : Security Advisory and Response

An Open Redirect vulnerability was discovered in Revive Adserver version < 5.0.5, allowing remote attackers to trick logged-in users into opening malicious links.

Understanding CVE-2020-8143

This CVE involves an Open Redirect vulnerability in Revive Adserver version < 5.0.5.

What is CVE-2020-8143?

CVE-2020-8143 is an Open Redirect vulnerability in Revive Adserver version < 5.0.5, reported by HackerOne user hoangn144. It allows attackers to redirect users to any destination by manipulating crafted links.

The Impact of CVE-2020-8143

Remote attackers can exploit this vulnerability to trick logged-in users into visiting malicious websites.
CSRF protection in certain URLs could be bypassed, leading to unauthorized redirection.

Technical Details of CVE-2020-8143

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability allows attackers to craft links that, when clicked by logged-in users, redirect them to unintended destinations.

Affected Systems and Versions

Revive Adserver version < 5.0.5 is affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating crafted links to trick users into visiting malicious websites.

Mitigation and Prevention

Protect your systems from CVE-2020-8143 with the following steps:

Immediate Steps to Take

Update Revive Adserver to version 5.0.5 or higher to fix the vulnerability.
Educate users about the risks of clicking on unknown or suspicious links.

Long-Term Security Practices

Regularly monitor and update your systems to prevent vulnerabilities.
Implement strong CSRF protection mechanisms to mitigate similar risks.

Patching and Updates

Stay informed about security updates for Revive Adserver and apply patches promptly to secure your systems.