CVE-2024-41947
📋 TL;DR
This XWiki vulnerability allows attackers to inject and execute JavaScript code in the context of higher-privileged users by creating edit conflicts. This compromises the entire XWiki installation's confidentiality, integrity, and availability. All XWiki installations below patched versions are affected.
💻 Affected Systems
- XWiki Platform
📦 What is this software?
Xwiki by Xwiki
Xwiki by Xwiki
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of XWiki installation leading to data theft, privilege escalation, and potential server takeover via authenticated user executing malicious JavaScript as administrator.
Likely Case
Privilege escalation where lower-privileged users gain administrative access, leading to data manipulation, unauthorized access to sensitive information, and further system compromise.
If Mitigated
Limited impact if proper access controls, network segmentation, and monitoring are in place, though JavaScript execution could still lead to session hijacking.
🎯 Exploit Status
Requires authenticated user access and ability to create edit conflicts with higher-privileged users. The vulnerability is well-documented in public advisories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 15.10.8 or 16.3.0RC1
Vendor Advisory: https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-692v-783f-mg8x
Restart Required: Yes
Instructions:
1. Backup your XWiki installation and database. 2. Download XWiki 15.10.8 or 16.3.0RC1 from official sources. 3. Stop XWiki service. 4. Replace installation with patched version. 5. Restart XWiki service. 6. Verify functionality.
🔧 Temporary Workarounds
Disable concurrent editing
allPrevent multiple users from editing the same page simultaneously to eliminate edit conflict scenarios
Modify xwiki.cfg or xwiki.properties to set 'xwiki.edit.locking' = true and configure appropriate timeout values
Restrict user permissions
allLimit edit permissions to trusted users only and implement strict access controls
Use XWiki's Rights management to restrict edit permissions to minimal necessary users
🧯 If You Can't Patch
- Implement strict network segmentation to isolate XWiki from critical systems
- Enable detailed logging and monitoring for suspicious edit activities and JavaScript execution attempts
🔍 How to Verify
Check if Vulnerable:
Check XWiki version via Administration → About or examine xwiki.cfg version property. Versions below 15.10.8 or 16.3.0RC1 are vulnerable.Check Version:
Check XWiki web interface at /xwiki/bin/view/Admin/About or examine WEB-INF/version.properties fileVerify Fix Applied:
After patching, verify version shows 15.10.8 or 16.3.0RC1 in Administration → About. Test edit conflict scenarios to ensure no JavaScript injection occurs.📡 Detection & Monitoring
Log Indicators:
- Multiple simultaneous edit attempts on same page
- JavaScript execution in edit conflict scenarios
- Unusual privilege escalation events
Network Indicators:
- Unusual patterns of page edit requests
- Multiple concurrent requests to same wiki page
SIEM Query:
source="xwiki.log" AND ("edit conflict" OR "concurrent edit") AND (javascript OR script OR eval)