CVE-2024-51471
📋 TL;DR
This vulnerability in IBM MQ Appliance web console allows authenticated users to cause denial-of-service when trace functionality is enabled. It occurs due to buffer overflow when writing information beyond allocated memory boundaries. Affects IBM MQ Appliance 9.3 LTS, 9.3 CD, and 9.4 LTS with web console access.
💻 Affected Systems
- IBM MQ Appliance
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete denial-of-service of the IBM MQ Appliance web console, potentially requiring system restart to restore functionality.
Likely Case
Web console becomes unresponsive or crashes, requiring administrative intervention to restart affected services.
If Mitigated
Minimal impact if trace functionality is disabled and proper access controls limit authenticated user access.
🎯 Exploit Status
Requires authenticated access to web console and trace functionality to be enabled. Buffer overflow exploitation requires specific knowledge of the system.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fixes as specified in IBM Security Bulletin
Vendor Advisory: https://www.ibm.com/support/pages/node/7178243
Restart Required: Yes
Instructions:
1. Review IBM Security Bulletin. 2. Apply recommended fix packs or interim fixes. 3. Restart IBM MQ Appliance services. 4. Verify fix application.
🔧 Temporary Workarounds
Disable Trace Functionality
allDisable trace functionality in IBM MQ Appliance web console to prevent exploitation
mqcli> runmqsc
ALTER QMGR TRACE(0)
Restrict Web Console Access
allLimit authenticated user access to web console to trusted administrators only
Configure firewall rules and access controls to restrict web console access
🧯 If You Can't Patch
- Disable trace functionality in all IBM MQ Appliance web console instances
- Implement strict access controls and network segmentation for web console access
🔍 How to Verify
Check if Vulnerable:
Check IBM MQ Appliance version and verify if trace functionality is enabled in web console configurationCheck Version:
mqcli> dspmqverVerify Fix Applied:
Verify applied fix version matches IBM Security Bulletin recommendations and test trace functionality📡 Detection & Monitoring
Log Indicators:
- Web console crash logs
- Memory access violation errors
- Trace functionality abnormal termination
Network Indicators:
- Unusual web console access patterns
- Multiple authentication attempts followed by trace operations
SIEM Query:
source="ibm_mq" AND (event="crash" OR event="memory_violation") AND component="web_console"