CVE-2024-56322
📋 TL;DR
GoCD versions 16.7.0 through 24.4.0 contain an XML External Entity (XXE) injection vulnerability in a hidden configuration repository feature. This allows GoCD administrators to execute XXE attacks when the server scans configuration repositories, potentially leading to server-side request forgery or data exfiltration. Only GoCD super administrators can exploit this vulnerability.
💻 Affected Systems
- GoCD Continuous Delivery Server
📦 What is this software?
Gocd by Thoughtworks
⚠️ Risk & Real-World Impact
Worst Case
A malicious GoCD administrator could perform server-side request forgery, read arbitrary files from the GoCD server filesystem, or potentially execute remote code through XXE payloads.
Likely Case
Limited impact since only trusted administrators can exploit it - a malicious administrator already has extensive system access and could cause damage through other means.
If Mitigated
Minimal impact with proper egress controls preventing the GoCD server from making arbitrary external requests.
🎯 Exploit Status
Exploitation requires GoCD administrator privileges and knowledge of the hidden configuration repository feature. The vulnerability triggers during periodic configuration repository scans or when manually triggered by an administrator.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: GoCD 24.5.0
Vendor Advisory: https://github.com/gocd/gocd/security/advisories/GHSA-8xwx-hf68-8xq7
Restart Required: No
Instructions:
1. Download GoCD 24.5.0 from the official releases page. 2. Follow the GoCD upgrade documentation for your deployment method (Docker, package manager, or manual). 3. Verify the upgrade completed successfully.
🔧 Temporary Workarounds
Egress Control Workaround
allPrevent the GoCD server from making arbitrary external network requests to limit XXE impact
Configure firewall rules to restrict outbound connections from GoCD server
Use network policies or security groups to limit egress traffic
🧯 If You Can't Patch
- Implement strict egress controls to prevent GoCD server from accessing arbitrary external locations
- Review and restrict GoCD administrator privileges to only trusted personnel
🔍 How to Verify
Check if Vulnerable:
Check GoCD version via admin interface or by examining server logs/configuration filesCheck Version:
Check GoCD admin dashboard or run: java -jar gocd.jar --version (if applicable)Verify Fix Applied:
Confirm GoCD version is 24.5.0 or higher via admin dashboard or version check command📡 Detection & Monitoring
Log Indicators:
- Unusual XML parsing errors in GoCD logs
- Unexpected external network requests from GoCD server process
- Configuration repository scan failures
Network Indicators:
- Unexpected outbound HTTP/HTTPS requests from GoCD server to unusual destinations
- DNS requests for internal or external entities from GoCD server
SIEM Query:
source="gocd.log" AND ("XML" OR "XXE" OR "external entity" OR "configuration repository")