CVE-2023-6033 : Security Advisory and Response

This CVE affects GitLab CE/EE versions prior to 16.6.1, 16.5.3, and 16.4.3, allowing an attacker to execute JavaScript in a victim's browser through improper neutralization of input in Jira integration configuration.

Understanding CVE-2023-6033

This vulnerability in GitLab exposes users to cross-site scripting attacks due to improper input handling.

What is CVE-2023-6033?

The CVE-2023-6033 vulnerability involves improper neutralization of input during web page generation, specifically in Jira integration configuration in GitLab CE/EE. This flaw enables attackers to execute malicious JavaScript in the victim's browser.

The Impact of CVE-2023-6033

The impact of CVE-2023-6033 is rated as HIGH. Attackers can leverage this vulnerability to execute arbitrary code in the context of the user's session, potentially leading to data theft, unauthorized actions, and other security compromises.

Technical Details of CVE-2023-6033

This section outlines the specifics of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

CVE-2023-6033 involves improper neutralization of input during web page generation in GitLab CE/EE, leading to a cross-site scripting vulnerability that allows for the execution of arbitrary JavaScript code in the victim's browser.

Affected Systems and Versions

GitLab CE/EE versions 15.10, 16.5, and 16.6 are affected by this vulnerability, with versions prior to 16.6.1, 16.5.3, and 16.4.3 being vulnerable.

Exploitation Mechanism

Attackers can exploit CVE-2023-6033 by injecting malicious JavaScript code through the Jira integration configuration in vulnerable GitLab versions, potentially compromising user browsers.

Mitigation and Prevention

To address CVE-2023-6033 and mitigate the associated risks, users and organizations should follow specific security measures and apply necessary updates.

Immediate Steps to Take

Users are advised to upgrade their GitLab CE/EE installations to versions 16.6.1, 16.5.3, 16.4.3, or above to safeguard against this vulnerability.

Long-Term Security Practices

Implementing secure coding practices, input validation mechanisms, and regular security audits can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly monitor security advisories from GitLab and promptly apply patches and updates to ensure the protection of your systems and data against known vulnerabilities like CVE-2023-6033.