CVE-2025-11695
📋 TL;DR
This vulnerability in MongoDB Rust Driver disables TLS certificate validation when tlsInsecure=False appears in connection strings, allowing man-in-the-middle attacks. It affects applications using vulnerable driver versions to connect to MongoDB databases. Attackers can intercept and manipulate encrypted communications between applications and databases.
💻 Affected Systems
- MongoDB Rust Driver
📦 What is this software?
Rust Driver by Mongodb
⚠️ Risk & Real-World Impact
Worst Case
Full database compromise including data theft, data manipulation, and credential harvesting through man-in-the-middle attacks on all TLS connections.
Likely Case
Data interception and manipulation of database communications, potentially leading to unauthorized data access or injection attacks.
If Mitigated
Limited impact if network segmentation and strict firewall rules prevent external access to database connections.
🎯 Exploit Status
Exploitation requires network access to intercept TLS traffic between application and MongoDB server. No authentication needed as this is a protocol-level vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v3.2.5
Vendor Advisory: https://jira.mongodb.org/browse/RUST-2264
Restart Required: Yes
Instructions:
1. Update Cargo.toml to require mongodb >= 3.2.5. 2. Run 'cargo update mongodb'. 3. Rebuild and redeploy your Rust application. 4. Verify connection strings no longer contain tlsInsecure=False.
🔧 Temporary Workarounds
Remove tlsInsecure Parameter
allManually edit all connection strings to remove tlsInsecure=False parameter and ensure proper TLS validation is enabled.
Edit application configuration files to remove 'tlsInsecure=False' from MongoDB connection URIs
🧯 If You Can't Patch
- Implement network segmentation to isolate MongoDB traffic from untrusted networks
- Use VPN or dedicated secure channels for all database communications
🔍 How to Verify
Check if Vulnerable:
Check Cargo.toml or Cargo.lock for mongodb dependency version < 3.2.5 and search codebase for connection strings containing 'tlsInsecure=False'Check Version:
grep mongodb Cargo.lock | grep versionVerify Fix Applied:
Verify mongodb version is >= 3.2.5 in Cargo.lock and confirm no connection strings contain tlsInsecure=False📡 Detection & Monitoring
Log Indicators:
- Connection strings with tlsInsecure=False in application logs
- Unexpected certificate validation failures or warnings
Network Indicators:
- Unencrypted or improperly encrypted MongoDB traffic on port 27017
- Man-in-the-middle attack patterns in network traffic
SIEM Query:
source="application_logs" AND "tlsInsecure=False" OR "mongodb" AND "certificate" AND "validation" AND "failed"