CVE-2019-6785 : What You Need to Know

A vulnerability has been found in GitLab Community and Enterprise Edition versions prior to 11.5.8, 11.6.x versions prior to 11.6.6, and 11.7.x versions prior to 11.7.1, which can result in a Denial of Service attack by exploiting a Markdown field.

Understanding CVE-2019-6785

This CVE identifies a vulnerability in GitLab versions that could allow an attacker to perform a Denial of Service attack.

What is CVE-2019-6785?

CVE-2019-6785 is a security vulnerability in GitLab Community and Enterprise Editions that allows an attacker to trigger a Denial of Service attack by inputting an excessively long string into a Markdown field.

The Impact of CVE-2019-6785

The vulnerability can lead to a Denial of Service attack, disrupting the availability of the affected GitLab instances.

Technical Details of CVE-2019-6785

This section provides more technical insights into the CVE.

Vulnerability Description

An issue in GitLab versions before 11.5.8, 11.6.x before 11.6.6, and 11.7.x before 11.7.1 allows for a Denial of Service attack. By inputting an overly long string into a Markdown field, an attacker can cause a denial of service.

Affected Systems and Versions

GitLab Community and Enterprise Edition versions prior to 11.5.8
GitLab 11.6.x versions prior to 11.6.6
GitLab 11.7.x versions prior to 11.7.1

Exploitation Mechanism

The vulnerability is exploited by entering an excessively long string into a Markdown field, triggering a Denial of Service condition.

Mitigation and Prevention

Protecting systems from CVE-2019-6785 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update GitLab Community and Enterprise Edition to versions 11.5.8, 11.6.6, or 11.7.1 or later to mitigate the vulnerability.
Monitor and restrict input lengths in Markdown fields to prevent potential attacks.

Long-Term Security Practices

Regularly update and patch GitLab installations to address security vulnerabilities promptly.
Implement input validation mechanisms to limit the length of user inputs in fields.

Patching and Updates

Apply the latest security patches provided by GitLab to ensure protection against known vulnerabilities.