CVE-2020-28919 : Exploit Details and Defense Strategies

A stored cross-site scripting (XSS) vulnerability in Checkmk 1.6.0x prior to 1.6.0p19 allows an authenticated remote attacker to inject arbitrary JavaScript via a javascript: URL in a view title.

Understanding CVE-2020-28919

This CVE involves a security vulnerability in Checkmk version 1.6.0x.

What is CVE-2020-28919?

The CVE-2020-28919 is a stored cross-site scripting (XSS) vulnerability that enables an authenticated remote attacker to insert malicious JavaScript code using a javascript: URL within a view title in Checkmk 1.6.0x prior to version 1.6.0p19.

The Impact of CVE-2020-28919

This vulnerability could be exploited by an attacker to execute arbitrary code within the context of the user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2020-28919

This section provides more in-depth technical details about the CVE.

Vulnerability Description

The vulnerability allows an authenticated remote attacker to inject arbitrary JavaScript code via a javascript: URL in a view title in Checkmk 1.6.0x before 1.6.0p19.

Affected Systems and Versions

Product: Checkmk
Versions affected: 1.6.0x

Exploitation Mechanism

The attacker needs to be authenticated to exploit this vulnerability, enabling them to insert malicious JavaScript code through a javascript: URL in a view title.

Mitigation and Prevention

Protect your systems from CVE-2020-28919 with these mitigation strategies.

Immediate Steps to Take

Update Checkmk to version 1.6.0p19 or later to patch the vulnerability.
Regularly monitor for security advisories and updates from the vendor.

Long-Term Security Practices

Implement strict input validation to prevent XSS attacks.
Educate users on the risks of clicking on suspicious links or executing unknown scripts.

Patching and Updates

Apply security patches promptly to ensure your systems are protected from known vulnerabilities.