CVE-2024-31997
📋 TL;DR
CVE-2024-31997 is a critical remote code execution vulnerability in XWiki Platform where UI extension parameters are improperly executed as Velocity code with programming rights. Any user with edit permissions on any document (including their own profile) can exploit this to execute arbitrary code, compromising the entire XWiki installation. This affects all XWiki installations running vulnerable versions.
💻 Affected Systems
- XWiki Platform
📦 What is this software?
Xwiki by Xwiki
Xwiki by Xwiki
Xwiki by Xwiki
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the XWiki server allowing attackers to execute arbitrary system commands, access sensitive data, modify or delete content, and potentially pivot to other systems.
Likely Case
Attackers with standard user accounts gain administrative privileges and execute malicious code to steal data, install backdoors, or disrupt services.
If Mitigated
With proper network segmentation and minimal user privileges, impact could be limited to the XWiki application layer, though code execution would still be possible.
🎯 Exploit Status
Exploitation requires edit permissions but is straightforward once authenticated. The vulnerability is in the core UI extension mechanism.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 14.10.19, 15.5.4, or 15.10-rc-1
Vendor Advisory: https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-c2gg-4gq4-jv5j
Restart Required: Yes
Instructions:
1. Backup your XWiki instance and database. 2. Download and install XWiki 14.10.19, 15.5.4, or 15.10-rc-1 from xwiki.org. 3. Follow the XWiki upgrade documentation for your specific version. 4. Restart the XWiki service. 5. Verify the upgrade completed successfully.
🧯 If You Can't Patch
- Immediately restrict edit permissions to only absolutely necessary trusted users.
- Implement network-level controls to isolate the XWiki instance and monitor for suspicious activity.
🔍 How to Verify
Check if Vulnerable:
Check your XWiki version via the Administration section or by examining the XWiki WAR file. If version is below 14.10.19, 15.5.4, or 15.10-rc-1, you are vulnerable.Check Version:
Check XWiki web interface Administration → About, or examine the xwiki-version.txt file in the installation directory.Verify Fix Applied:
After patching, verify the version shows 14.10.19, 15.5.4, or 15.10-rc-1 in the Administration panel. Test that UI extensions with Velocity code no longer execute with programming rights.📡 Detection & Monitoring
Log Indicators:
- Unusual Velocity template execution patterns
- Unexpected UI extension creations or modifications
- Administrative actions from non-admin users
Network Indicators:
- Unusual outbound connections from the XWiki server
- Unexpected file downloads or uploads to the XWiki instance
SIEM Query:
source="xwiki.log" AND ("UIExtension" OR "Velocity" OR "programming rights") AND ("created" OR "modified" OR "executed")🔗 References
- https://github.com/xwiki/xwiki-platform/commit/171e7c7d0e56deaa7b3678657ae26ef95379b1ea
- https://github.com/xwiki/xwiki-platform/commit/1b2574eb966457ca4ef34e557376b8751d1be90d
- https://github.com/xwiki/xwiki-platform/commit/56748e154a9011f0d6239bec0823eaaeab6ec3f7
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-c2gg-4gq4-jv5j
- https://jira.xwiki.org/browse/XWIKI-21335
- https://github.com/xwiki/xwiki-platform/commit/171e7c7d0e56deaa7b3678657ae26ef95379b1ea
- https://github.com/xwiki/xwiki-platform/commit/1b2574eb966457ca4ef34e557376b8751d1be90d
- https://github.com/xwiki/xwiki-platform/commit/56748e154a9011f0d6239bec0823eaaeab6ec3f7
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-c2gg-4gq4-jv5j
- https://jira.xwiki.org/browse/XWIKI-21335
