CVE-2019-6797 : Vulnerability Insights and Analysis
Learn about CVE-2019-6797, a vulnerability in GitLab Enterprise Edition versions before 11.5.8, 11.6.x before 11.6.6, and 11.7.x before 11.7.1, allowing GitHub token exposure to project maintainers.
A vulnerability related to the disclosure of information has been identified in earlier versions of GitLab Enterprise Edition, specifically versions before 11.5.8, 11.6.x before 11.6.6, and 11.7.x before 11.7.1. This issue involved the unintended exposure of the GitHub token utilized in CI/CD for External Repos, resulting in the token being unintentionally revealed to project maintainers through the user interface.
Understanding CVE-2019-6797
This CVE-2019-6797 vulnerability pertains to an information disclosure flaw in GitLab Enterprise Edition versions prior to 11.5.8, 11.6.x before 11.6.6, and 11.7.x before 11.7.1.
What is CVE-2019-6797?
It is a vulnerability that allowed the GitHub token used in CI/CD for External Repos to be leaked to project maintainers through the user interface.
The Impact of CVE-2019-6797
The exposure of the GitHub token could lead to unauthorized access to repositories and compromise the security of CI/CD processes.
Technical Details of CVE-2019-6797
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability in GitLab Enterprise Edition versions before 11.5.8, 11.6.x before 11.6.6, and 11.7.x before 11.7.1 allowed the GitHub token to be unintentionally exposed to project maintainers.
Affected Systems and Versions
- GitLab Enterprise Edition versions before 11.5.8
- GitLab Enterprise Edition 11.6.x before 11.6.6
- GitLab Enterprise Edition 11.7.x before 11.7.1
Exploitation Mechanism
The GitHub token leakage occurred through the user interface, exposing it to unintended recipients.
Mitigation and Prevention
To address CVE-2019-6797, follow these mitigation steps:
Immediate Steps to Take
- Upgrade GitLab Enterprise Edition to version 11.5.8, 11.6.6, or 11.7.1 or later.
- Regenerate GitHub tokens used in CI/CD for External Repos.
Long-Term Security Practices
- Regularly review and update access controls for repositories.
- Implement least privilege principles for CI/CD processes.
Patching and Updates
- Apply security patches promptly.