CVE-2021-43288 : Security Advisory and Response

An issue was discovered in ThoughtWorks GoCD before 21.3.0 where an attacker can plant malicious JavaScript into a failed Job Report.

Understanding CVE-2021-43288

This CVE describes a vulnerability in ThoughtWorks GoCD that allows an attacker to inject malicious JavaScript into a failed Job Report.

What is CVE-2021-43288?

The vulnerability in ThoughtWorks GoCD enables an attacker controlling a GoCD Agent to insert harmful JavaScript code into a failed Job Report.

The Impact of CVE-2021-43288

The exploitation of this vulnerability could lead to various malicious activities, such as executing arbitrary code, stealing sensitive information, or disrupting the functionality of the GoCD system.

Technical Details of CVE-2021-43288

This section provides technical insights into the CVE-2021-43288 vulnerability.

Vulnerability Description

The issue in ThoughtWorks GoCD before version 21.3.0 allows an attacker with access to a GoCD Agent to embed malicious JavaScript in a failed Job Report.

Affected Systems and Versions

The vulnerability affects ThoughtWorks GoCD versions prior to 21.3.0.
Systems running affected versions of GoCD with agents under the attacker's control are at risk.

Exploitation Mechanism

The vulnerability enables an attacker to manipulate the Job Report content, injecting harmful JavaScript code that executes when viewed by users, leading to potential security breaches.

Mitigation and Prevention

Protecting systems from CVE-2021-43288 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade ThoughtWorks GoCD to version 21.3.0 or newer to eliminate the vulnerability.
Monitor Job Reports for any suspicious JavaScript injections.
Restrict access to GoCD Agents to authorized users only.

Long-Term Security Practices

Regularly update and patch GoCD instances to ensure the latest security measures are in place.
Conduct security audits and code reviews to detect and mitigate similar vulnerabilities in the future.

Patching and Updates

Apply security patches provided by ThoughtWorks promptly to ensure ongoing protection against known vulnerabilities.