CVE-2024-6383
📋 TL;DR
A heap buffer overflow vulnerability in MongoDB C Driver's bson_string_append function could allow memory corruption when processing BSON strings. This affects applications using libbson versions before 1.27.1. Attackers could potentially execute arbitrary code or cause denial of service.
💻 Affected Systems
- MongoDB C Driver (libbson)
⚠️ 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
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Application crash or denial of service due to memory corruption.
If Mitigated
Limited impact with proper memory protections (ASLR, DEP) and exploit mitigations.
🎯 Exploit Status
Exploitation requires triggering the vulnerable function with specific input.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: libbson 1.27.1
Vendor Advisory: https://jira.mongodb.org/browse/CDRIVER-5628
Restart Required: Yes
Instructions:
1. Update libbson to version 1.27.1 or later. 2. Recompile applications using the updated library. 3. Restart affected services.
🔧 Temporary Workarounds
Input validation
allImplement strict input validation for BSON string operations
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable systems
- Deploy runtime application self-protection (RASP) or memory protection tools
🔍 How to Verify
Check if Vulnerable:
Check libbson version with: pkg-config --modversion libbson-1.0Check Version:
pkg-config --modversion libbson-1.0Verify Fix Applied:
Confirm version is 1.27.1 or higher using the same command📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults
- Memory corruption errors in application logs
Network Indicators:
- Unusual BSON data patterns
- Excessive failed requests to MongoDB services
SIEM Query:
source="application.log" AND ("segmentation fault" OR "memory corruption" OR "heap overflow")