CVE-2024-2279
📋 TL;DR
This vulnerability is a stored cross-site scripting (XSS) flaw in GitLab's autocomplete feature for issue references, affecting GitLab CE/EE versions 16.7 to 16.8.6, 16.9 to 16.9.4, and 16.10 to 16.10.2. It allows attackers to inject malicious scripts that execute in victims' browsers, potentially enabling unauthorized actions on behalf of users. Organizations using these vulnerable GitLab versions are at risk, especially if they have internet-facing instances.
💻 Affected Systems
- GitLab CE
- GitLab EE
📦 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 steal session cookies, perform account takeovers, manipulate data, or execute arbitrary actions as authenticated users, leading to data breaches or system compromise.
Likely Case
Attackers exploit the XSS to hijack user sessions, deface content, or redirect users to malicious sites, causing reputational damage and potential data leakage.
If Mitigated
With proper input validation and output encoding, the risk is minimized to low, preventing script execution and limiting impact to minor disruptions.
🎯 Exploit Status
Exploitation requires crafting a malicious payload via the autocomplete feature; authenticated access may be needed depending on GitLab settings.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 16.8.7, 16.9.5, 16.10.3
Vendor Advisory: https://gitlab.com/gitlab-org/gitlab/-/issues/448469
Restart Required: Yes
Instructions:
1. Backup GitLab data. 2. Update GitLab to the patched version using the official upgrade guide. 3. Restart GitLab services to apply changes.
🔧 Temporary Workarounds
Disable Autocomplete Feature
allTemporarily disable the autocomplete for issue references feature to mitigate the vulnerability.
Edit GitLab configuration to remove or comment out autocomplete settings; consult GitLab docs for specific steps.
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to block inline scripts and reduce XSS impact.
- Use web application firewalls (WAF) to filter malicious payloads targeting the autocomplete endpoint.
🔍 How to Verify
Check if Vulnerable:
Check GitLab version via command: `sudo gitlab-rake gitlab:env:info | grep 'GitLab Version'` and compare to affected ranges.Check Version:
sudo gitlab-rake gitlab:env:info | grep 'GitLab Version'Verify Fix Applied:
After patching, verify version is 16.8.7, 16.9.5, or 16.10.3 using the same command and test autocomplete functionality for XSS.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to autocomplete endpoints with script tags or encoded payloads in logs.
Network Indicators:
- HTTP traffic containing malicious JavaScript in autocomplete-related API calls.
SIEM Query:
Example: search for 'autocomplete' AND 'script' in web server logs with status 200.