CVE-2024-48839 Overview
CVE-2024-48839 is a critical Improper Input Validation vulnerability affecting ABB building automation and energy management systems. This Code Injection flaw (CWE-94) allows unauthenticated remote attackers to execute arbitrary code on affected devices. The vulnerability impacts ABB ASPECT Enterprise, NEXUS Series, and MATRIX Series products running firmware version 3.08.02.
Critical Impact
Unauthenticated remote code execution on industrial control systems could allow attackers to compromise building automation infrastructure, potentially affecting critical facility operations, energy management, and physical security systems.
Affected Products
- ABB ASPECT Enterprise (ASPECT-ENT-2, ASPECT-ENT-12, ASPECT-ENT-96, ASPECT-ENT-256) - Firmware v3.08.02
- ABB NEXUS Series (NEXUS-2128, NEXUS-264, NEXUS-3-2128, NEXUS-3-264 and variants) - Firmware v3.08.02
- ABB MATRIX Series (MATRIX-11, MATRIX-216, MATRIX-232, MATRIX-264, MATRIX-296) - Firmware v3.08.02
Discovery Timeline
- 2024-12-05 - CVE-2024-48839 published to NVD
- 2025-02-27 - Last updated in NVD database
Technical Details for CVE-2024-48839
Vulnerability Analysis
This vulnerability stems from insufficient input validation in the affected ABB firmware components. The flaw allows attackers to inject and execute arbitrary code remotely without requiring any authentication or user interaction. Given the network-accessible nature of these building automation systems and the complete lack of authentication requirements, exploitation is relatively straightforward for attackers who can reach the device over the network.
The vulnerability can result in high impact to confidentiality and integrity of the affected systems, meaning attackers could potentially read sensitive configuration data, modify system settings, or use the compromised device as a pivot point for further network intrusion. The availability impact is also present, though somewhat less severe, as attackers could disrupt building automation functions.
Root Cause
The root cause is improper input validation (CWE-94: Improper Control of Generation of Code - Code Injection). The firmware fails to properly sanitize user-supplied input before processing it, allowing attackers to inject malicious code that gets executed by the system. This class of vulnerability occurs when applications construct code dynamically using untrusted data without adequate validation or encoding.
Attack Vector
The attack vector is network-based, requiring no authentication and no user interaction. An attacker with network access to the affected ABB device can exploit this vulnerability by sending specially crafted requests containing malicious payloads. The lack of authentication requirements means any attacker who can reach the device over the network can attempt exploitation.
The vulnerability is particularly concerning in industrial and building automation contexts where these devices often manage critical infrastructure systems including HVAC, lighting, access control, and energy monitoring. Successful exploitation could allow attackers to:
- Execute arbitrary commands on the underlying operating system
- Modify device configurations and operational parameters
- Establish persistent access for ongoing reconnaissance or attacks
- Pivot to other systems within the building automation network
Detection Methods for CVE-2024-48839
Indicators of Compromise
- Unexpected outbound network connections from ABB ASPECT, NEXUS, or MATRIX devices
- Unusual processes or services running on affected devices
- Modified configuration files or firmware settings without authorized changes
- Anomalous log entries indicating injection attempts or command execution
Detection Strategies
- Monitor network traffic to and from ABB building automation devices for unusual patterns or payloads
- Implement network segmentation and intrusion detection systems to identify exploitation attempts
- Review device logs for signs of unauthorized access or command execution
- Deploy SentinelOne Singularity for endpoint protection to detect malicious activity on connected systems
Monitoring Recommendations
- Establish baseline network behavior for ABB devices and alert on deviations
- Implement continuous monitoring of building automation network segments
- Set up alerts for configuration changes on affected devices
- Monitor for reconnaissance activity targeting ABB device management interfaces
How to Mitigate CVE-2024-48839
Immediate Actions Required
- Review the ABB Security Advisory for detailed mitigation guidance
- Isolate affected ABB devices from untrusted networks immediately
- Implement strict network segmentation to limit access to building automation systems
- Audit access logs and device configurations for signs of compromise
Patch Information
ABB has released information regarding this vulnerability. Organizations should consult the ABB Security Advisory for firmware updates and specific remediation steps. Ensure all affected ASPECT Enterprise, NEXUS Series, and MATRIX Series devices are updated to patched firmware versions as soon as available.
Workarounds
- Implement network access controls to restrict management interface access to authorized personnel only
- Deploy firewalls and access control lists to limit network exposure of affected devices
- Disable unnecessary network services and interfaces on ABB devices where possible
- Use VPN or other secure tunneling methods for remote administration
# Network segmentation example - restrict access to ABB device management
# Configure firewall rules to limit access to known administrative IPs only
iptables -A INPUT -p tcp --dport 443 -s 10.0.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
