CVE-2021-39877 : Vulnerability Insights and Analysis

A comprehensive overview of the CVE-2021-39877 vulnerability discovered in GitLab.

Understanding CVE-2021-39877

This section will provide insights into the details of the security vulnerability.

What is CVE-2021-39877?

The vulnerability identified in GitLab from version 12.2 onwards that allows attackers to trigger uncontrolled resource consumption using a specially crafted file.

The Impact of CVE-2021-39877

The vulnerability has a high severity level with a CVSS base score of 7.7 and impacts the availability of the system.

Technical Details of CVE-2021-39877

Explore the technical aspects of the CVE to understand its implications further.

Vulnerability Description

The vulnerability enables attackers to cause uncontrolled resource consumption by exploiting a flaw in GitLab.

Affected Systems and Versions

Product: GitLab
Vendor: GitLab
Affected Versions:
=12.2, <14.1.7

=14.2, <14.2.5

=14.3, <14.3.1

Exploitation Mechanism

The attack complexity is low, with a network attack vector, impacting availability significantly. Attackers require low privileges, and the attack does not need user interaction.

Mitigation and Prevention

Learn how to mitigate and prevent the exploitation of CVE-2021-39877.

Immediate Steps to Take

Upgrade GitLab to versions not impacted by the vulnerability.
Implement network security measures to detect and block potential attacks.

Long-Term Security Practices

Regularly monitor GitLab security advisories for updates and patches.
Conduct security audits to identify and address vulnerabilities proactively.

Patching and Updates

Apply security patches released by GitLab promptly to address the vulnerability and enhance system security.