CVE-2019-10640 : What You Need to Know
Learn about CVE-2019-10640, a vulnerability in GitLab versions before 11.7.10, 11.8.x, and 11.9.x, allowing uncontrolled resource consumption. Find mitigation steps and prevention measures here.
A vulnerability has been identified in GitLab Community and Enterprise Edition versions prior to 11.7.10, 11.8.x prior to 11.8.6, and 11.9.x prior to 11.9.4. The issue relates to input validation in the .gitlab-ci.yml refs value, lacking proper regex validation, leading to uncontrolled resource consumption.
Understanding CVE-2019-10640
This CVE involves a vulnerability in GitLab versions before specific releases, impacting the input validation process for .gitlab-ci.yml refs value.
What is CVE-2019-10640?
This CVE refers to a security flaw in GitLab Community and Enterprise Edition versions before 11.7.10, 11.8.x before 11.8.6, and 11.9.x before 11.9.4. The vulnerability arises from inadequate regex validation in the .gitlab-ci.yml refs value.
The Impact of CVE-2019-10640
The vulnerability can result in uncontrolled resource consumption, potentially leading to various security risks and system instability.
Technical Details of CVE-2019-10640
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The issue stems from a regex input validation problem in the .gitlab-ci.yml refs value, allowing for uncontrolled resource consumption.
Affected Systems and Versions
- GitLab Community and Enterprise Edition versions before 11.7.10
- GitLab 11.8.x versions before 11.8.6
- GitLab 11.9.x versions before 11.9.4
Exploitation Mechanism
The lack of proper regex validation in the .gitlab-ci.yml refs value can be exploited by attackers to cause uncontrolled resource consumption.
Mitigation and Prevention
To address and prevent the CVE-2019-10640 vulnerability, follow these steps:
Immediate Steps to Take
- Update GitLab to versions 11.7.10, 11.8.6, or 11.9.4 or later to mitigate the vulnerability.
- Review and validate input validation mechanisms in CI/CD pipelines to prevent similar issues.
Long-Term Security Practices
- Regularly monitor and update GitLab installations to ensure the latest security patches are applied.
- Educate developers on secure coding practices to enhance overall system security.
Patching and Updates
- Apply the recommended patches provided by GitLab to address the vulnerability and enhance system security.