CVE-2020-27219 : Exploit Details and Defense Strategies

Eclipse Hawkbit prior to version 0.3.0M7 is affected by a vulnerability that allows unsafe characters in the HTTP 404 JSON response, potentially leading to Cross-site Scripting (XSS) attacks.

Understanding CVE-2020-27219

In this CVE, the improper handling of the HTTP 404 JSON response in Eclipse Hawkbit exposes a security risk.

What is CVE-2020-27219?

This CVE pertains to a vulnerability in Eclipse Hawkbit where the REST API's HTTP 404 JSON response may include unsafe characters in the path attribute, enabling potential XSS attacks.

The Impact of CVE-2020-27219

The vulnerability could allow an attacker to inject malicious scripts into the response, leading to XSS attacks and potential data theft or manipulation.

Technical Details of CVE-2020-27219

Eclipse Hawkbit's vulnerability in handling HTTP 404 JSON responses exposes it to XSS risks.

Vulnerability Description

The issue arises from unsafe characters in the path attribute of the HTTP 404 JSON response, potentially allowing for XSS attacks.

Affected Systems and Versions

Product: Eclipse Hawkbit
Vendor: The Eclipse Foundation
Versions Affected: All versions prior to 0.3.0M7

Exploitation Mechanism

By sending a POST request to a non-existing resource, the full path from the URL is returned unescaped, providing an opportunity for attackers to exploit the response.

Mitigation and Prevention

To address CVE-2020-27219, immediate actions and long-term security practices are crucial.

Immediate Steps to Take

Update Eclipse Hawkbit to version 0.3.0M7 or later to mitigate the vulnerability.
Monitor and sanitize input data to prevent malicious script injections.

Long-Term Security Practices

Implement input validation and output encoding to prevent XSS attacks.
Regularly update and patch software to address security vulnerabilities.

Patching and Updates

Apply patches and updates provided by The Eclipse Foundation to secure Eclipse Hawkbit against known vulnerabilities.