CVE-2024-56135
📋 TL;DR
This CVE-2024-56135 is an authenticated OS command injection vulnerability in Progress LoadMaster that allows authenticated users to execute arbitrary operating system commands. It affects LoadMaster versions from 7.2.55.0 to 7.2.60.1, 7.2.49.0 to 7.2.54.12, and all versions prior to 7.2.48.12, as well as ECS versions prior to 7.2.60.1.
💻 Affected Systems
- Progress LoadMaster
- ECS
📦 What is this software?
Loadmaster by Progress
Loadmaster by Progress
Loadmaster by Progress
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with root-level access, data exfiltration, lateral movement, and persistent backdoor installation.
Likely Case
Unauthorized command execution leading to service disruption, configuration changes, and potential credential theft.
If Mitigated
Limited impact with proper network segmentation, minimal authenticated user access, and command execution restrictions.
🎯 Exploit Status
Requires authenticated access; exploitation depends on input validation bypass techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.2.60.2 or later for LoadMaster and ECS
Vendor Advisory: https://community.progress.com/s/article/LoadMaster-Security-Vulnerability-CVE-2024-56131-CVE-2024-56132-CVE-2024-56133-CVE-2024-56134-CVE-2024-56135
Restart Required: No
Instructions:
1. Backup current configuration. 2. Download and apply patch version 7.2.60.2 or later from Progress support portal. 3. Verify patch installation through version check. 4. Test functionality post-patch.
🔧 Temporary Workarounds
Restrict Authenticated User Access
allLimit the number of authenticated users and implement least privilege access controls.
Network Segmentation
allIsolate LoadMaster/ECS systems from critical infrastructure and implement strict firewall rules.
🧯 If You Can't Patch
- Implement strict input validation at application layer if possible
- Monitor for unusual command execution patterns and user activity
🔍 How to Verify
Check if Vulnerable:
Check LoadMaster/ECS version via web interface or CLI; compare against affected version ranges.Check Version:
Check via LoadMaster web interface: System > System Configuration > Version InformationVerify Fix Applied:
Verify version is 7.2.60.2 or later; test authenticated user input validation.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns
- Multiple failed authentication attempts followed by successful login
- Unexpected system process creation
Network Indicators:
- Unusual outbound connections from LoadMaster systems
- Unexpected protocol usage
SIEM Query:
source="loadmaster" AND (event_type="command_execution" OR user_activity="unusual")