CVE-2025-6712
📋 TL;DR
MongoDB Server versions 8.0 prior to 8.0.10 have a memory management vulnerability where certain internal operations can cause excessive memory consumption, potentially leading to server crashes and denial of service. This affects all MongoDB deployments running vulnerable versions, particularly those handling complex queries or high loads. The issue stems from inefficiencies in internal memory handling during prolonged operations.
💻 Affected Systems
- MongoDB Server
📦 What is this software?
Mongodb by Mongodb
⚠️ Risk & Real-World Impact
Worst Case
Complete server crash causing extended downtime and data unavailability until manual restart and recovery.
Likely Case
Gradual performance degradation leading to intermittent service disruptions and increased latency.
If Mitigated
Minor performance impact with no service disruption if memory limits and monitoring are properly configured.
🎯 Exploit Status
Exploitation requires triggering specific internal operations that persist longer than expected. No public exploit code is known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.0.10
Vendor Advisory: https://jira.mongodb.org/browse/SERVER-106751
Restart Required: Yes
Instructions:
1. Download MongoDB Server version 8.0.10 or later from official MongoDB website. 2. Stop the MongoDB service. 3. Backup your data and configuration files. 4. Install the updated version. 5. Restart the MongoDB service. 6. Verify the new version is running correctly.
🔧 Temporary Workarounds
Memory Usage Monitoring and Restart
linuxImplement aggressive memory monitoring and automatic restart when memory usage exceeds safe thresholds.
# Example using cron and mongostat
*/5 * * * * mongostat --host localhost --port 27017 --rowcount 1 | grep -q 'memory.*>90%' && systemctl restart mongod
Query Optimization and Limits
allImplement query timeouts and result size limits to prevent long-running operations.
db.adminCommand({setParameter: 1, maxTimeMS: 60000})
db.adminCommand({setParameter: 1, internalQueryExecMaxBlockingSortBytes: 100000000})
🧯 If You Can't Patch
- Implement aggressive memory monitoring with alerts and manual intervention procedures
- Reduce server load and implement query rate limiting to minimize trigger conditions
🔍 How to Verify
Check if Vulnerable:
Connect to MongoDB and run: db.version(). If version starts with '8.0.' and is less than '8.0.10', the system is vulnerable.Check Version:
db.version()Verify Fix Applied:
After patching, run: db.version() and confirm version is '8.0.10' or higher. Monitor memory usage during normal operations.📡 Detection & Monitoring
Log Indicators:
- Rapid increase in memory usage metrics
- OOM (Out of Memory) errors in logs
- Server restart events without clear cause
- Slow query warnings with memory-related messages
Network Indicators:
- Increased response times
- Connection timeouts
- Reduced throughput
SIEM Query:
source="mongodb.log" ("memory" AND ("high" OR "exceed" OR "OOM")) OR source="mongodb.log" "server restart"