CVE-2024-51545
📋 TL;DR
This CVE describes a username enumeration vulnerability in ABB industrial control system products that allows attackers to access user management functions. Attackers can add, delete, modify, and list usernames without proper authentication. Organizations using affected ABB ASPECT, NEXUS, and MATRIX series products are at risk.
💻 Affected Systems
- ABB ASPECT - Enterprise
- ABB NEXUS Series
- ABB MATRIX Series
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of industrial control systems allowing attackers to create administrative accounts, delete legitimate users, and gain full control over critical infrastructure operations.
Likely Case
Unauthorized access to user management functions leading to privilege escalation, account manipulation, and potential disruption of industrial processes.
If Mitigated
Limited impact with proper network segmentation, authentication controls, and monitoring in place to detect enumeration attempts.
🎯 Exploit Status
Username enumeration vulnerabilities typically require minimal technical skill to exploit once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for updated versions
Vendor Advisory: https://search.abb.com/library/Download.aspx?DocumentID=9AKK108469A7497&LanguageCode=en&DocumentPartId=&Action=Launch
Restart Required: Yes
Instructions:
1. Review vendor advisory 2. Apply recommended patches 3. Restart affected systems 4. Verify patch installation
🔧 Temporary Workarounds
Network segmentation
allIsolate affected systems from untrusted networks
Access control restrictions
allImplement strict firewall rules to limit access to user management interfaces
🧯 If You Can't Patch
- Implement network segmentation to isolate affected systems
- Deploy intrusion detection systems to monitor for enumeration attempts
🔍 How to Verify
Check if Vulnerable:
Test if user management functions are accessible without proper authenticationCheck Version:
Check system version through product interface or vendor documentationVerify Fix Applied:
Verify patches are applied and test that user management functions require proper authentication📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts
- Unauthorized access to user management endpoints
- Unusual account creation/modification events
Network Indicators:
- Traffic to user management interfaces from unauthorized sources
- Patterns of enumeration requests
SIEM Query:
source_ip OUTSIDE trusted_networks AND destination_port IN [management_ports] AND http_method IN ["POST","GET"] AND uri CONTAINS "user"