CVE-2022-0427
📋 TL;DR
This vulnerability allows attackers to inject malicious HTML attributes into Jupyter notebooks in GitLab, enabling them to perform arbitrary HTTP POST requests on behalf of authenticated users. This can lead to account takeover by forcing users to execute unwanted actions. All GitLab CE/EE users with Jupyter notebook functionality enabled are affected.
💻 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
Complete account takeover leading to data theft, privilege escalation, and lateral movement within the GitLab instance.
Likely Case
Unauthorized actions performed on user accounts, potentially including repository manipulation, pipeline execution, or configuration changes.
If Mitigated
Limited impact with proper input validation and CSRF protections in place, potentially only affecting specific notebook functionality.
🎯 Exploit Status
Exploitation requires the attacker to have access to create or modify Jupyter notebooks that will be viewed by target users.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: GitLab 14.8.2, 14.7.4, 14.6.5
Vendor Advisory: https://about.gitlab.com/releases/2022/02/25/critical-security-release-gitlab-14-8-2-released/
Restart Required: Yes
Instructions:
1. Backup your GitLab instance. 2. Update to GitLab 14.8.2, 14.7.4, or 14.6.5. 3. Restart GitLab services. 4. Verify the update was successful.
🔧 Temporary Workarounds
Disable Jupyter Notebook Integration
allTemporarily disable Jupyter notebook functionality to prevent exploitation.
Edit GitLab configuration to set 'jupyter_enabled' to false
Restrict Notebook Access
allLimit Jupyter notebook creation and viewing to trusted users only.
Configure GitLab permissions to restrict notebook access
🧯 If You Can't Patch
- Implement strict input validation for HTML attributes in Jupyter notebook rendering
- Deploy WAF rules to detect and block malicious HTML attribute injection attempts
🔍 How to Verify
Check if Vulnerable:
Check if GitLab version is between 14.5 and below 14.6.5, 14.7.4, or 14.8.2 with Jupyter enabled.Check Version:
sudo gitlab-rake gitlab:env:info | grep 'Version:'Verify Fix Applied:
Verify GitLab version is 14.6.5, 14.7.4, or 14.8.2 or higher.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests originating from Jupyter notebook sessions
- Multiple failed authentication attempts following notebook access
Network Indicators:
- Unexpected outbound HTTP POST requests from GitLab instances
- Traffic patterns suggesting CSRF exploitation
SIEM Query:
source="gitlab" AND ("jupyter" OR "notebook") AND ("POST" OR "csrf")🔗 References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-0427.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/347284
- https://hackerone.com/reports/1409788
- https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-0427.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/347284
- https://hackerone.com/reports/1409788
