CVE-2024-2448: Progress LoadMaster RCE Vulnerability

CVE-2024-2448 Overview

CVE-2024-2448 is an OS command injection vulnerability [CWE-78] affecting Progress LoadMaster. An authenticated user of the LoadMaster management UI, holding any permission level, can inject shell commands through a vulnerable UI component. Successful exploitation results in arbitrary operating system command execution on the underlying appliance.

The vulnerability affects LoadMaster load balancer appliances used in enterprise environments for application delivery and traffic management. Attackers can leverage this flaw to compromise appliance confidentiality, integrity, and availability.

Critical Impact
Authenticated attackers with minimal privileges can execute arbitrary OS commands on LoadMaster appliances, leading to full appliance compromise.

Affected Products

Progress LoadMaster LTSF (Long Term Support Feature) branch
Progress LoadMaster GA (General Availability) branch, including 7.2.48.10 LTS and 7.1.35.10 MT
Progress LoadMaster Multi-Tenant Edition

Discovery Timeline

2024-03-22 - CVE-2024-2448 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-2448

Vulnerability Analysis

CVE-2024-2448 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command. The LoadMaster management UI accepts user-supplied input and passes it into a shell command context without sufficient sanitization. Attackers append shell metacharacters or command separators to alter the command executed by the underlying operating system.

An attacker requires authenticated access to the LoadMaster UI, but the vulnerability does not restrict exploitation to administrative users. Any account with UI access, regardless of assigned permissions, can trigger the injection. This significantly lowers the exploitation bar in environments with delegated LoadMaster administration or shared read-only accounts.

Exploitation yields command execution in the context of the LoadMaster process on the appliance. This grants access to configuration data, TLS private keys, load balancer state, and any traffic passing through the appliance.

Root Cause

The root cause is improper neutralization of shell metacharacters in a UI-facing parameter that is concatenated into an operating system command. LoadMaster invokes a shell subprocess with attacker-controlled input embedded in the command string. Without input validation or safe command construction (such as argument arrays), the shell interprets injected characters as command syntax.

Attack Vector

The attack vector is network-based via the LoadMaster management interface. The attacker authenticates to the UI with any valid credential, then submits a crafted request to the vulnerable component. The crafted payload contains shell command separators such as ;, |, &&, or backticks that break out of the intended command context. See the Kemp Technologies Security Advisory for vendor-specific technical details.

No verified proof-of-concept exploit code has been published. The vulnerability description in prose is sufficient for defenders to understand and remediate.

Detection Methods for CVE-2024-2448

Indicators of Compromise

Unexpected child processes spawned by the LoadMaster management UI process on the appliance
Outbound network connections from the LoadMaster appliance to unfamiliar hosts, particularly reverse shells or download attempts
Modified configuration files, new local accounts, or unexpected SSH keys on the appliance
LoadMaster UI audit log entries showing requests containing shell metacharacters (;, |, &, backticks, $()) in unusual parameters

Detection Strategies

Enable and centralize LoadMaster audit and access logs to a SIEM for query and correlation
Alert on POST or configuration-change requests where parameter values contain shell metacharacters
Baseline expected process trees on the appliance and alert on deviations, particularly shell interpreters spawned from web UI handlers

Monitoring Recommendations

Forward LoadMaster syslog data to a central log platform for retention and search
Monitor authentication events on the LoadMaster UI for anomalous logins, especially from low-privilege accounts followed by configuration activity
Review outbound traffic from the LoadMaster management interface for connections outside expected patterns

How to Mitigate CVE-2024-2448

Immediate Actions Required

Upgrade LoadMaster to a fixed version per the Kemp Technologies advisory
Restrict access to the LoadMaster management UI to a dedicated management network or VPN
Audit all LoadMaster user accounts and remove unused or unnecessary UI accounts
Rotate credentials for any account with UI access, especially shared or service accounts

Patch Information

Progress has released fixed LoadMaster versions addressing CVE-2024-2448. Administrators should consult the vendor advisory for exact patched build numbers corresponding to their LTSF, GA, LTS, or Multi-Tenant deployment. Apply the patch through the standard LoadMaster upgrade procedure and verify successful installation before returning the appliance to production traffic.

Workarounds

Limit LoadMaster UI reachability to a small set of administrative source IP addresses using firewall rules
Enforce strong, unique credentials and multi-factor authentication on any upstream identity provider fronting LoadMaster
Remove UI access from any account that only requires API or command-line access

bash

# Example firewall restriction: allow only management subnet to reach LoadMaster UI
# Replace 10.10.0.0/24 with your management network and <LM_IP> with the appliance address
iptables -A INPUT -p tcp --dport 443 -s 10.10.0.0/24 -d <LM_IP> -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -d <LM_IP> -j DROP