CVE-2023-4630 : What You Need to Know

An issue has been identified in GitLab with CVE-2023-4630, impacting all versions starting from 10.6 before 16.1.5, all versions starting from 16.2 before 16.2.5, and all versions starting from 16.3 before 16.3.1. This vulnerability allows any user to access limited information about a project's imports, potentially exposing sensitive data to unauthorized actors.

Understanding CVE-2023-4630

This section will provide a detailed overview of the CVE-2023-4630 vulnerability in GitLab.

What is CVE-2023-4630?

CVE-2023-4630 is classified as CWE-200, indicating the exposure of sensitive information to an unauthorized actor. In this scenario, users can read restricted data related to project imports within GitLab.

The Impact of CVE-2023-4630

The vulnerability poses a medium severity risk with a base score of 5 according to the CVSS v3.1 metrics. Although the confidentiality impact is low, the exposure of limited project information can still have detrimental implications, especially for sensitive data.

Technical Details of CVE-2023-4630

Exploring the technical aspects of the CVE-2023-4630 vulnerability in GitLab.

Vulnerability Description

The flaw allows any user to gain access to specific project import details that should not be disclosed, potentially leading to unauthorized access to sensitive information.

Affected Systems and Versions

GitLab versions starting from 10.6 before 16.1.5, 16.2 before 16.2.5, and 16.3 before 16.3.1 are susceptible to this vulnerability, exposing them to the risk of unauthorized data access.

Exploitation Mechanism

Unauthorized actors can exploit this vulnerability by leveraging the capability to view limited project import data, which they should not have access to under normal circumstances.

Mitigation and Prevention

Understanding how to address and prevent the CVE-2023-4630 vulnerability in GitLab.

Immediate Steps to Take

To mitigate the risk associated with CVE-2023-4630, users are advised to upgrade their GitLab installations to versions 16.1.5, 16.2.5, 16.3.1, or newer, where the vulnerability has been patched.

Long-Term Security Practices

Implementing robust access controls, user permissions, and regular security assessments can help prevent similar vulnerabilities and enhance overall security posture.

Patching and Updates

Staying up to date with GitLab's security patches and following best practices for secure software development and deployment are crucial in preventing and addressing vulnerabilities like CVE-2023-4630.

This vulnerability was discovered internally by Rodrigo Tomonari, a GitLab team member.