CVE-2024-43423: ProGauge MAGLINK LX Auth Bypass Flaw

CVE-2024-43423 Overview

CVE-2024-43423 is a critical hardcoded credentials vulnerability affecting the web application for the ProGauge MAGLINK LX4 CONSOLE. The vulnerability exists because the system contains an administrative-level user account with a password that cannot be changed by system administrators or end users. This design flaw allows attackers with knowledge of the hardcoded credentials to gain full administrative access to the affected fuel management systems.

Critical Impact

Remote attackers can exploit hardcoded administrative credentials to gain complete control over fuel tank monitoring and management systems, potentially enabling tampering with critical infrastructure operations.

Affected Products

• Dover Fueling Solutions ProGauge MAGLINK LX Console Firmware
• Dover Fueling Solutions ProGauge MAGLINK LX Console
• Dover Fueling Solutions ProGauge MAGLINK LX4 Console Firmware
• Dover Fueling Solutions ProGauge MAGLINK LX4 Console

Discovery Timeline

• 2024-09-25 - CVE-2024-43423 published to NVD
• 2024-10-01 - Last updated in NVD database

Technical Details for CVE-2024-43423

Vulnerability Analysis

This vulnerability represents a severe security design flaw classified under CWE-259 (Use of Hard-coded Password) and CWE-798 (Use of Hard-coded Credentials). The web application embedded within ProGauge MAGLINK LX and LX4 consoles ships with a built-in administrative account that has a static, unchangeable password. This type of vulnerability is particularly dangerous in industrial control system (ICS) environments where fuel tank monitoring consoles are deployed.

The network-accessible nature of this vulnerability means that any attacker who can reach the web interface over the network can attempt authentication using the hardcoded credentials. No special privileges or user interaction are required for exploitation, making this an easily exploitable vulnerability with severe consequences for confidentiality, integrity, and availability of the affected systems.

Root Cause

The root cause of this vulnerability stems from poor security design practices during the development of the ProGauge MAGLINK web application. The developers embedded an administrative account with a static password directly into the firmware, with no mechanism provided for administrators to modify or disable this account. This approach was likely implemented for maintenance or support purposes but creates an inherent security weakness that cannot be remediated by end users through normal configuration changes.

Attack Vector

The attack vector is network-based, requiring the attacker to have network access to the web application interface of the ProGauge MAGLINK console. Once network connectivity is established, the attacker can:

1. Navigate to the web application login interface
2. Authenticate using the hardcoded administrative credentials
3. Gain full administrative access to the fuel management console
4. Modify configurations, tamper with sensor readings, or disrupt operations

Since these devices are used in fuel management and tank monitoring applications, successful exploitation could impact critical infrastructure operations at fuel stations, storage facilities, and distribution centers.

Detection Methods for CVE-2024-43423

Indicators of Compromise

• Unexpected administrative login sessions to ProGauge MAGLINK consoles
• Authentication logs showing successful logins from unfamiliar IP addresses
• Configuration changes made outside of normal maintenance windows
• Unusual network traffic patterns to/from MAGLINK console devices

Detection Strategies

• Monitor authentication logs for the hardcoded administrative account activity
• Implement network intrusion detection rules to identify access attempts to ProGauge MAGLINK web interfaces
• Deploy network segmentation monitoring to detect unauthorized cross-segment access to ICS devices
• Conduct regular audits of administrative session activity on affected consoles

Monitoring Recommendations

• Establish baseline network behavior for all ProGauge MAGLINK devices and alert on deviations
• Implement SIEM rules to correlate authentication events from fuel management systems
• Configure alerts for any administrative actions performed on affected consoles
• Monitor for reconnaissance activity targeting ICS device web interfaces

How to Mitigate CVE-2024-43423

Immediate Actions Required

• Isolate affected ProGauge MAGLINK LX and LX4 consoles from direct internet access
• Implement strict network segmentation to limit access to these devices
• Deploy firewall rules to restrict web interface access to authorized management stations only
• Enable logging and monitoring on all network paths to affected devices
• Contact Dover Fueling Solutions for firmware updates or remediation guidance

Patch Information

Organizations should consult the CISA ICS Advisory ICSA-24-268-04 for the latest vendor guidance and available patches. Contact Dover Fueling Solutions directly for firmware updates that address this hardcoded credential vulnerability.

Workarounds

• Implement network segmentation to isolate affected devices from general network access
• Use VPN or jump servers to restrict access to the web management interface
• Deploy web application firewalls (WAF) to monitor and control access to the console interface
• Implement IP whitelisting to allow only authorized management stations to access the devices
• Consider disabling the web interface entirely if not required for operations

# Example network segmentation firewall rules
# Block direct internet access to MAGLINK consoles
iptables -A INPUT -d 10.10.100.0/24 -i eth0 -j DROP

# Allow access only from authorized management subnet
iptables -A INPUT -s 10.10.50.0/24 -d 10.10.100.0/24 -p tcp --dport 80 -j ACCEPT
iptables -A INPUT -s 10.10.50.0/24 -d 10.10.100.0/24 -p tcp --dport 443 -j ACCEPT

# Log all other access attempts
iptables -A INPUT -d 10.10.100.0/24 -j LOG --log-prefix "MAGLINK_ACCESS: "