Progress Kemp LoadMaster OS Remote Code Execution (RCE) Vulnerability Advisory (CVE-2024-1212)
Executive & SecOps Summary
SECOPS ASSESSMENTProgress Kemp LoadMaster OS (LMOS) versions prior to 7.2.48.10, 7.2.54.8, and 7.2.59.2
Unauthenticated remote attackers can access the system via the management interface to execute arbitrary OS commands and gain full system control
Immediately upgrade to patched LMOS versions (7.2.59.2, 7.2.54.8, 7.2.48.10 or higher) and restrict external access to the management interface
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
The primary remediation is to upgrade to the latest secure firmware versions. Access the LoadMaster Web User Interface (WUI), navigate to 'System Configuration -> Update Software', and upload the appropriate patch image.
# 1. Verify the current running LMOS version via SSH
cat /etc/version
# 2. Target minimum secure versions for each release line:
# - Upgrade to LMOS 7.2.59.2 or higher
# - Upgrade to LMOS 7.2.54.8 or higher
# - Upgrade to LMOS 7.2.48.10 or higher2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, restrict access to the LoadMaster management interface (WUI/API) using firewalls or network Access Control Lists (ACLs) to ensure it is only accessible from trusted administrative subnets.
# Example Nginx reverse proxy configuration to restrict management port access
server {
listen 8443 ssl;
server_name loadmaster.local;
# Allow only trusted administrator IP ranges
allow 10.0.0.0/8;
allow 192.168.1.0/24;
deny all;
location / {
proxy_pass https://backend_loadmaster_wui;
}
}3. Log Audit & IoC Verification Commands
Monitor system and web server access logs for suspicious parameters or command execution attempts.
# Scan web server access logs for common command injection patterns (semicolons, pipes, backticks)
grep -Ei '(\||;|`|\$\()' /var/log/httpd/access_log
# Check system logs for unauthorized shell executions or privilege escalation attempts
grep -Ei '(sh|bash|cmd|exec)' /var/log/messagesStop Exposing VPN Ports to the Internet — Switch to Zero-Trust Access
Eliminate public-facing VPN concentrators and firewall management ports with identity-first Zero-Trust Network Access.
Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2024-1212) is an OS Command Injection vulnerability (CWE-78) residing in the management interface (WUI/API) of Progress Kemp LoadMaster. Due to insufficient input validation and improper sanitization of user-supplied data, unauthenticated remote attackers can craft malicious HTTP requests that are directly interpreted and executed as system commands by the underlying operating system.
2. Exploitation Mechanics & Attack Scenario
If the LoadMaster management port (typically TCP 443 or 8443) is exposed to the public internet, an attacker can bypass authentication entirely. By sending specially crafted payloads containing shell metacharacters (such as &, |, ;, or `) to specific API endpoints or parameters, the web server executes these payloads with administrative privileges, allowing the attacker to establish a reverse shell or download and execute malicious binaries.
3. Infrastructure & Business Impact
With a CVSS score of 9.8 (Critical) and its inclusion in the CISA KEV (Known Exploited Vulnerabilities) catalog, this vulnerability poses an immediate threat. Since load balancers act as critical gateways, compromise of this device allows attackers to perform lateral movement within the internal network, decrypt SSL/TLS traffic, exfiltrate sensitive data, or launch devastating Denial of Service (DoS) attacks.
Official Vendor Advisories & References
Unauthenticated remote attackers can access the system through the LoadMaster management interface, enabling arbitrary system command execution.
Frequently Asked SecOps Questions (CVE-2024-1212)
FAQQ1. How critical is CVE-2024-1212 and is it actively exploited in the wild?
CVE-2024-1212 is rated CVSS 9.8 (CRITICAL) with a 30-day EPSS exploitation probability of 95.4%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2024-1212?
Primary impacted vendors include progress, kemp across loadmaster, lmos. Scope summary: All hardware, virtual, cloud, and Free LoadMaster platforms running the following LMOS versions: - LMOS versions prior to 7.2.59.2 - LMOS versions prior to 7.2.54.8 - LMOS versions prior to 7.2.48.10
Q3. What temporary mitigations or workarounds exist for CVE-2024-1212 before patching?
[Mitigation] Immediately upgrade to patched LMOS versions (7.2.59.2, 7.2.54.8, 7.2.48.10 or higher) and restrict external access to the management interface Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
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🔗 Related Advisories in Similar Stack (progress)
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