CVE-2024-7954
📋 TL;DR
CVE-2024-7954 is a critical remote code execution vulnerability in SPIP's porte_plume plugin. Unauthenticated attackers can execute arbitrary PHP code on vulnerable SPIP installations, potentially taking full control of affected systems. This affects SPIP installations using vulnerable versions of the porte_plume plugin.
💻 Affected Systems
- SPIP Content Management System
⚠️ 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
Complete system compromise allowing attackers to execute arbitrary commands, steal data, install backdoors, pivot to internal networks, and maintain persistent access.
Likely Case
Website defacement, data theft, installation of cryptocurrency miners or botnet malware, and credential harvesting from the compromised server.
If Mitigated
Limited impact if proper network segmentation, web application firewalls, and intrusion detection systems are in place to block exploitation attempts.
🎯 Exploit Status
Public exploit code and detailed analysis are available, making this easily exploitable by attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: SPIP 4.30-alpha2, 4.2.13, or 4.1.16
Vendor Advisory: https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-3-0-alpha2-SPIP-4-2-13-SPIP-4.html
Restart Required: No
Instructions:
1. Backup your SPIP installation and database. 2. Download the patched version from the official SPIP website. 3. Replace the porte_plume plugin files with the updated version. 4. Verify the update by checking the plugin version.
🔧 Temporary Workarounds
Disable porte_plume plugin
linuxTemporarily disable the vulnerable plugin to prevent exploitation while planning permanent fixes.
mv /path/to/spip/plugins/porte_plume /path/to/spip/plugins/porte_plume.disabled
Web Application Firewall rule
allBlock requests targeting the porte_plume plugin endpoints.
# Add to .htaccess for Apache: RewriteRule ^plugins/porte_plume - [F,L]
# Add to nginx config: location ~ /plugins/porte_plume { deny all; }
🧯 If You Can't Patch
- Implement strict network access controls to limit SPIP server exposure
- Deploy web application firewall with rules to block porte_plume exploitation patterns
🔍 How to Verify
Check if Vulnerable:
Check SPIP version via admin panel or examine porte_plume plugin version in /plugins/porte_plume/plugin.xmlCheck Version:
grep -r 'version_plugin' /path/to/spip/plugins/porte_plume/plugin.xmlVerify Fix Applied:
Verify SPIP version is 4.30-alpha2, 4.2.13, or 4.1.16 or higher, and check that porte_plume plugin files match patched versions.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to porte_plume endpoints
- PHP execution errors in web server logs
- Unexpected file creation in SPIP directories
Network Indicators:
- HTTP requests containing base64 encoded PHP code targeting /plugins/porte_plume/
- Unusual outbound connections from SPIP server
SIEM Query:
source="web_server_logs" AND (uri="/plugins/porte_plume" OR user_agent="*porte_plume*") AND status=200