CVE-2024-3036: ABB 800xA Base System DOS Vulnerability

CVE-2024-3036 Overview

CVE-2024-3036 is an Improper Input Validation vulnerability affecting ABB 800xA Base, a critical industrial control system (ICS) platform used in process automation environments. An attacker who successfully exploits this vulnerability could cause services to crash by sending specifically crafted messages to the affected system. This denial of service condition could disrupt critical industrial operations and potentially impact safety systems.

Critical Impact

Successful exploitation allows adjacent network attackers to crash critical ABB 800xA services through specially crafted messages, potentially disrupting industrial control operations.

Affected Products

• ABB 800xA Base System versions 6.0.0 through 6.1.1-2

Discovery Timeline

• June 21, 2024 - CVE-2024-3036 published to NVD
• December 19, 2025 - Last updated in NVD database

Technical Details for CVE-2024-3036

Vulnerability Analysis

This vulnerability stems from improper input validation (CWE-1284) within the ABB 800xA Base system. The affected software fails to properly validate or sanitize input data contained in network messages before processing them. When a malformed or specifically crafted message is received by the vulnerable service, the inadequate validation allows the malicious input to trigger an unhandled exception or fault condition, resulting in a service crash.

The vulnerability requires adjacent network access, meaning an attacker must be positioned on the same network segment as the target system. While low privileges are required for exploitation, no user interaction is needed once the attacker has network adjacency. The impact is limited to availability—there is no evidence of confidentiality or integrity compromise through this vulnerability.

Industrial control systems like ABB 800xA are commonly deployed in critical infrastructure environments including power generation, oil and gas, and manufacturing facilities. Service disruptions in these environments can have significant operational and safety implications.

Root Cause

The root cause of CVE-2024-3036 is insufficient input validation in the message handling components of ABB 800xA Base. The vulnerability is classified under CWE-1284 (Improper Validation of Specified Quantity in Input), indicating that the software does not properly verify that input data conforms to expected formats, lengths, or values before processing. This allows specially crafted messages containing unexpected or malformed data to bypass input checks and cause service instability.

Attack Vector

The attack vector for this vulnerability is adjacent network-based. An attacker positioned on the same network segment as the vulnerable ABB 800xA system can send specifically crafted network messages to the affected services. The attack does not require user interaction and can be executed with low privilege levels.

The exploitation process involves identifying the vulnerable ABB 800xA services on the network and constructing malicious messages that exploit the input validation weakness. When the target service attempts to process these crafted messages, the lack of proper validation causes the service to crash, resulting in a denial of service condition.

For technical details on the vulnerability and recommended mitigations, refer to the ABB Security Advisory.

Detection Methods for CVE-2024-3036

Indicators of Compromise

• Unexpected crashes or restarts of ABB 800xA Base services
• Unusual network traffic patterns targeting ABB 800xA service ports from adjacent network segments
• Repeated service failures logged in ABB 800xA system event logs
• Malformed or anomalous messages captured in network traffic destined for 800xA services

Detection Strategies

• Monitor ABB 800xA service availability and implement alerts for unexpected service crashes or restarts
• Deploy network intrusion detection systems (IDS) configured to identify anomalous traffic patterns targeting industrial control systems
• Enable detailed logging on ABB 800xA systems and correlate service failure events with network activity
• Implement network segmentation monitoring to detect unauthorized access attempts from adjacent network segments

Monitoring Recommendations

• Configure SIEM rules to alert on multiple ABB 800xA service restarts within short time periods
• Establish baseline network communication patterns for 800xA systems and alert on deviations
• Monitor authentication logs for suspicious access attempts preceding service disruptions
• Implement OT-specific security monitoring solutions designed for industrial control system environments

How to Mitigate CVE-2024-3036

Immediate Actions Required

• Apply vendor-provided patches or updates for ABB 800xA Base as documented in the ABB security advisory
• Implement strict network segmentation to isolate ABB 800xA systems from untrusted network segments
• Review and restrict network access controls to limit which systems can communicate with 800xA services
• Enable enhanced logging and monitoring on affected systems to detect exploitation attempts

Patch Information

ABB has released security guidance for this vulnerability. Organizations running affected versions of ABB 800xA Base (versions 6.0.0 through 6.1.1-2) should consult the ABB Technical Document (7PAA013309) for detailed patch and remediation instructions. Contact ABB support for assistance with obtaining and applying the appropriate security updates.

Workarounds

• Implement network segmentation to prevent unauthorized adjacent network access to ABB 800xA systems
• Deploy firewall rules to restrict which hosts can communicate with 800xA services
• Consider implementing application-layer filtering or deep packet inspection for traffic destined to 800xA systems
• Establish redundancy and failover mechanisms to minimize operational impact from potential service disruptions

# Example network segmentation rule (firewall configuration)
# Restrict access to ABB 800xA services to authorized hosts only
# Consult ABB documentation for specific port requirements

# Allow only authorized engineering workstations
iptables -A INPUT -s 192.168.10.0/24 -d 192.168.20.0/24 -j ACCEPT

# Deny all other adjacent network access to ICS segment
iptables -A INPUT -s 192.168.0.0/16 -d 192.168.20.0/24 -j DROP