CVE-2024-7591
📋 TL;DR
CVE-2024-7591 is an OS command injection vulnerability in Progress LoadMaster load balancers that allows attackers to execute arbitrary commands on the underlying operating system. This affects LoadMaster 7.2.40.0+, ECS all versions, and Multi-Tenancy 7.1.35.4+. Attackers can potentially gain full control of affected systems.
💻 Affected Systems
- Progress LoadMaster
- LoadMaster ECS
- LoadMaster Multi-Tenancy
📦 What is this software?
Loadmaster by Kemptechnologies
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands, pivot to internal networks, steal sensitive data, install persistent backdoors, or disrupt critical services.
Likely Case
Unauthenticated remote code execution leading to system takeover, credential theft, and lateral movement within the network.
If Mitigated
Limited impact if proper network segmentation, strict access controls, and monitoring are in place, though system compromise remains possible.
🎯 Exploit Status
Public technical details and proof-of-concept are available. The vulnerability requires no authentication and is easy to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: LoadMaster 7.2.60.3 and later
Vendor Advisory: https://support.kemptechnologies.com/hc/en-us/articles/29196371689613-LoadMaster-Security-Vulnerability-CVE-2024-7591
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Download patch from Kemp support portal. 3. Apply patch via LoadMaster web interface. 4. Restart LoadMaster services. 5. Verify patch installation.
🔧 Temporary Workarounds
Restrict Web Management Interface Access
allLimit access to LoadMaster web management interface to trusted IP addresses only
Configure firewall rules to restrict access to LoadMaster management IP/ports
Disable Unused Features
allDisable any unnecessary web management features that might be vulnerable
Review and disable non-essential web interface functions
🧯 If You Can't Patch
- Implement strict network segmentation to isolate LoadMaster from critical systems
- Enable comprehensive logging and monitoring for suspicious command execution attempts
🔍 How to Verify
Check if Vulnerable:
Check LoadMaster version via web interface: System Configuration > System Administration > System InformationCheck Version:
Via web interface or SSH: cat /etc/versionVerify Fix Applied:
Verify version is 7.2.60.3 or later and test for command injection using safe test payloads📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Suspicious web requests to management interface
- Failed authentication attempts followed by command execution
Network Indicators:
- Unusual outbound connections from LoadMaster
- Traffic patterns indicating command and control activity
- Unexpected network scans from LoadMaster
SIEM Query:
source="loadmaster" AND (command="*;*" OR command="*|*" OR command="*`*" OR command="*$(*" OR command="*&*" OR command="*&&*")