CVE-2022-24846
📋 TL;DR
This vulnerability in GeoWebCache allows arbitrary code execution via an unchecked JNDI lookup in the disk quota mechanism. Attackers with admin-level access to GeoServer's user interface can exploit this remotely, while GeoWebCache requires local configuration file access. The vulnerability affects systems using GeoWebCache with GeoServer integration.
💻 Affected Systems
- GeoWebCache
- GeoServer
📦 What is this software?
Geowebcache by Geoserver
Geowebcache by Geoserver
⚠️ Risk & Real-World Impact
Worst Case
Remote attacker with admin credentials gains full system control via arbitrary code execution, potentially leading to data theft, system compromise, or ransomware deployment.
Likely Case
Privileged attacker exploits the vulnerability to execute malicious code on the server, compromising the GeoWebCache/GeoServer instance and potentially adjacent systems.
If Mitigated
With proper access controls and network segmentation, impact is limited to the GeoWebCache service itself, though code execution would still be possible.
🎯 Exploit Status
Exploitation requires admin credentials for GeoServer interface or local file access for GeoWebCache configuration.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: GeoWebCache 1.21.0, 1.20.2, 1.19.3
Vendor Advisory: https://github.com/GeoWebCache/geowebcache/security/advisories/GHSA-4v22-v8jp-438r
Restart Required: Yes
Instructions:
1. Download patched version from official repository. 2. Backup configuration files. 3. Stop GeoWebCache service. 4. Replace with patched version. 5. Restart service.
🔧 Temporary Workarounds
Disable disk quota feature
allRemove or disable disk quota configuration to prevent JNDI lookup
Edit geowebcache.xml and remove <diskQuota> section
Restrict admin access
allLimit GeoServer admin interface access to trusted IPs only
Configure firewall rules or web server access controls
🧯 If You Can't Patch
- Implement strict network segmentation to isolate GeoWebCache/GeoServer from critical systems
- Enforce multi-factor authentication for all admin accounts and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check GeoWebCache version and configuration for disk quota settingsCheck Version:
Check geowebcache.xml or application logs for version informationVerify Fix Applied:
Verify installed version is 1.21.0, 1.20.2, or 1.19.3 or later📡 Detection & Monitoring
Log Indicators:
- Unusual JNDI lookup patterns in GeoWebCache logs
- Admin login attempts from unexpected sources
Network Indicators:
- Outbound LDAP/RMI connections from GeoWebCache server
- Unusual traffic to GeoServer admin interface
SIEM Query:
source="geowebcache.log" AND "JNDI" OR source="geoserver.log" AND "admin" AND "login"