CVE-2025-12657
📋 TL;DR
MongoDB's KMIP response parser accepts malformed packets that create invalid objects, causing read access violations when accessed. This affects MongoDB instances using KMIP for key management. The vulnerability could lead to denial of service or information disclosure.
💻 Affected Systems
- MongoDB
📦 What is this software?
Mongodb by Mongodb
Mongodb by Mongodb
⚠️ Risk & Real-World Impact
Worst Case
Denial of service causing MongoDB instance crash, potentially leading to data unavailability or information disclosure through memory access violations.
Likely Case
Service disruption or instability when malformed KMIP packets are processed, requiring restart of affected MongoDB instances.
If Mitigated
Minimal impact if KMIP is not used or if network controls prevent malicious KMIP traffic.
🎯 Exploit Status
Requires ability to send malformed KMIP packets to MongoDB instance, which typically requires network access to KMIP port and knowledge of KMIP protocol.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check MongoDB security advisory for specific fixed versions
Vendor Advisory: https://jira.mongodb.org/browse/SERVER-101230
Restart Required: Yes
Instructions:
1. Check MongoDB security advisory for affected versions. 2. Upgrade to patched version. 3. Restart MongoDB service. 4. Verify KMIP functionality post-upgrade.
🔧 Temporary Workarounds
Disable KMIP if not required
allRemove KMIP configuration if encryption key management doesn't require it
Modify mongod.conf to remove KMIP configuration
Restart MongoDB service
Network segmentation for KMIP
allRestrict KMIP port access to trusted key management servers only
Configure firewall rules to restrict access to KMIP port (typically 5696)
🧯 If You Can't Patch
- Implement strict network controls to limit KMIP port access to authorized key management servers only
- Monitor KMIP traffic for anomalies and implement rate limiting if possible
🔍 How to Verify
Check if Vulnerable:
Check MongoDB version and KMIP configuration. If using KMIP and running affected version, system is vulnerable.Check Version:
mongod --versionVerify Fix Applied:
Verify MongoDB version is updated to patched version and KMIP functionality works correctly after restart.📡 Detection & Monitoring
Log Indicators:
- MongoDB crash logs
- Access violation errors in MongoDB logs
- KMIP parsing errors
Network Indicators:
- Unusual KMIP traffic patterns
- KMIP packets from unexpected sources
SIEM Query:
source="mongodb.log" AND ("access violation" OR "crash" OR "KMIP parse")