CVE-2024-2177
📋 TL;DR
A Cross Window Forgery vulnerability in GitLab CE/EE allows attackers to manipulate the OAuth authentication flow via crafted payloads, potentially enabling unauthorized access. This affects all GitLab instances running vulnerable versions. Attackers could exploit this to compromise user accounts or perform unauthorized actions.
💻 Affected Systems
- GitLab Community Edition
- GitLab Enterprise Edition
📦 What is this software?
Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →Gitlab by Gitlab
GitLab is a complete DevOps platform providing source code management, CI/CD pipelines, security scanning, container registry, and collaboration tools used by millions of developers and thousands of enterprises worldwide. As both a cloud-hosted SaaS offering (GitLab.com) and self-managed software, G...
Learn more about Gitlab →⚠️ Risk & Real-World Impact
Worst Case
Attackers could hijack OAuth sessions to gain unauthorized access to GitLab accounts, potentially leading to data theft, code manipulation, or privilege escalation.
Likely Case
Attackers could perform account takeover of GitLab users via OAuth flow manipulation, enabling access to repositories, pipelines, and sensitive data.
If Mitigated
With proper network segmentation and access controls, impact would be limited to specific user accounts rather than system-wide compromise.
🎯 Exploit Status
Exploitation requires user interaction with crafted payloads but doesn't require authentication to initiate attack.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 16.11.5, 17.0.3, 17.1.1
Vendor Advisory: https://gitlab.com/gitlab-org/gitlab/-/issues/444467
Restart Required: Yes
Instructions:
1. Backup your GitLab instance. 2. Update to patched version: 16.11.5, 17.0.3, or 17.1.1. 3. Restart GitLab services. 4. Verify update with version check.
🔧 Temporary Workarounds
Disable OAuth Authentication
allTemporarily disable OAuth authentication to prevent exploitation
Edit GitLab configuration to disable OAuth providers
Restrict OAuth Applications
allReview and restrict authorized OAuth applications
Review /admin/applications in GitLab admin panel
🧯 If You Can't Patch
- Implement strict network controls to limit GitLab access to trusted users only
- Monitor OAuth authentication logs for suspicious activity and implement rate limiting
🔍 How to Verify
Check if Vulnerable:
Check GitLab version against affected ranges: 16.3-16.11.4, 17.0-17.0.2, 17.1-17.1.0Check Version:
sudo gitlab-rake gitlab:env:info | grep 'Version:'Verify Fix Applied:
Verify GitLab version is 16.11.5, 17.0.3, or 17.1.1 or higher📡 Detection & Monitoring
Log Indicators:
- Unusual OAuth authentication patterns
- Multiple failed OAuth attempts from same source
- OAuth requests with unusual parameters
Network Indicators:
- Suspicious redirects in OAuth flow
- Unexpected OAuth callback requests
SIEM Query:
source="gitlab" AND (oauth OR authentication) AND (error OR failed OR suspicious)