CVE-2024-29022
📋 TL;DR
This is a cross-site scripting (XSS) vulnerability in Xibo Digital Signage platform where unsanitized request headers allow attackers to inject malicious scripts. The scripts can steal session IDs and user agents to hijack active sessions, or exfiltrate display information. All Xibo CMS users running affected versions are vulnerable.
💻 Affected Systems
- Xibo CMS
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers hijack administrator sessions, gain full control of the CMS, compromise all connected displays, and potentially pivot to internal networks.
Likely Case
Session hijacking leading to unauthorized access, data exfiltration from displays, and potential privilege escalation within the Xibo system.
If Mitigated
Limited impact with proper network segmentation, but still risks session compromise within the Xibo application.
🎯 Exploit Status
Exploitation requires the ability to send crafted HTTP requests to the Xibo CMS, but no authentication is needed for the initial injection.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.3.10 or 4.0.9
Vendor Advisory: https://xibosignage.com/blog/security-advisory-2024-04
Restart Required: Yes
Instructions:
1. Backup your Xibo CMS database and files. 2. Download the appropriate fixed version (3.3.10 for v3, 4.0.9 for v4). 3. Follow Xibo's upgrade documentation. 4. Restart web services. 5. Verify the upgrade was successful.
🧯 If You Can't Patch
- Implement strict network access controls to limit Xibo CMS access to trusted users only.
- Deploy a web application firewall (WAF) with XSS protection rules to block malicious payloads.
🔍 How to Verify
Check if Vulnerable:
Check your Xibo CMS version via the web interface (Admin -> About) or by examining the CMS version file.Check Version:
Check the web interface or examine /vendor/xibo-cms/version.txt file.Verify Fix Applied:
Confirm the version is 3.3.10 or higher for v3, or 4.0.9 or higher for v4. Test that request headers are properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual session creations from unexpected IPs
- Multiple failed login attempts followed by successful logins from different user agents
- HTTP requests with suspicious header values containing script tags
Network Indicators:
- Outbound connections to unknown domains from the Xibo server
- Unusual traffic patterns to/from the Xibo CMS
SIEM Query:
source="xibo_access.log" AND (http_header="*<script>*" OR http_header="*javascript:*")🔗 References
- https://github.com/dasgarner/xibo-cms/commit/a81044e6ccdd92cc967e34c125bd8162432e51bc.diff
- https://github.com/xibosignage/xibo-cms/commit/ebeccd000b51f00b9a25f56a2f252d6812ebf850.diff
- https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-xchw-pf2w-rpgq
- https://xibosignage.com/blog/security-advisory-2024-04
- https://github.com/dasgarner/xibo-cms/commit/a81044e6ccdd92cc967e34c125bd8162432e51bc.diff
- https://github.com/xibosignage/xibo-cms/commit/ebeccd000b51f00b9a25f56a2f252d6812ebf850.diff
- https://github.com/xibosignage/xibo-cms/security/advisories/GHSA-xchw-pf2w-rpgq
- https://xibosignage.com/blog/security-advisory-2024-04
