CVE-2019-10113 : Security Advisory and Response

A vulnerability was found in GitLab Community and Enterprise Edition versions prior to 11.7.8, 11.8.x prior to 11.8.4, and 11.9.x prior to 11.9.2. The issue allows for Uncontrolled Resource Consumption when multiple GET /api/v4/projects/<id>/languages requests are made concurrently.

Understanding CVE-2019-10113

This CVE identifies a vulnerability in GitLab versions before specific releases that could lead to Uncontrolled Resource Consumption.

What is CVE-2019-10113?

CVE-2019-10113 is a security vulnerability in GitLab Community and Enterprise Edition that allows for Uncontrolled Resource Consumption through concurrent API requests.

The Impact of CVE-2019-10113

The vulnerability could potentially result in resource exhaustion and impact the availability and performance of affected GitLab instances.

Technical Details of CVE-2019-10113

This section provides technical insights into the vulnerability.

Vulnerability Description

The issue arises from the handling of concurrent GET /api/v4/projects/<id>/languages requests, leading to Uncontrolled Resource Consumption.

Affected Systems and Versions

GitLab Community and Enterprise Edition versions before 11.7.8
GitLab 11.8.x before 11.8.4
GitLab 11.9.x before 11.9.2

Exploitation Mechanism

Attackers can exploit this vulnerability by sending multiple GET /api/v4/projects/<id>/languages requests simultaneously, causing resource consumption.

Mitigation and Prevention

Protecting systems from CVE-2019-10113 requires specific actions.

Immediate Steps to Take

Upgrade affected GitLab instances to versions 11.7.8, 11.8.4, or 11.9.2 or newer.
Monitor system resources for unusual consumption patterns.

Long-Term Security Practices

Implement rate limiting on API requests to prevent resource exhaustion.
Regularly update and patch GitLab installations to address security vulnerabilities.
Conduct security audits to identify and mitigate similar risks.

Patching and Updates

Ensure timely installation of GitLab updates and security patches to mitigate the CVE-2019-10113 vulnerability.