CVE-2022-1159 in ControlLogix 5580
Summary
by MITRE • 04/02/2022
Rockwell Automation Studio 5000 Logix Designer (all versions) are vulnerable when an attacker who achieves administrator access on a workstation running Studio 5000 Logix Designer could inject controller code undetectable to a user.
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Analysis
by VulDB Data Team • 04/05/2022
Rockwell Automation Studio 5000 Logix Designer represents a critical industrial automation platform used extensively in manufacturing and process control environments. This vulnerability affects all versions of the software and stems from insufficient access controls and code validation mechanisms within the application. The flaw allows an attacker who has already achieved administrator privileges on a workstation to inject malicious controller code that remains undetectable to end users, creating a sophisticated persistence mechanism that can evade traditional security monitoring approaches.
The technical implementation of this vulnerability lies in the application's failure to properly validate or sanitize code injection points within the controller programming environment. When an attacker with administrative access manipulates the software's code generation or modification processes, the injected code bypasses standard user interface checks and validation routines. This creates a situation where malicious code can be seamlessly integrated into the controller's operational logic without triggering any user-facing alerts or security warnings. The vulnerability maps to CWE-94, which describes "Improper Control of Generation of Code" and specifically addresses situations where software fails to properly validate code inputs or outputs.
From an operational perspective, this vulnerability presents a severe risk to industrial control systems since it enables attackers to maintain persistent access to critical infrastructure without detection. The undetectable nature of the injected code means that operators and security personnel would continue to monitor systems normally while malicious code executes in the background, potentially causing production disruptions, safety hazards, or data integrity compromises. The attack vector assumes initial compromise through administrative access, which often occurs through social engineering, credential theft, or exploitation of other vulnerabilities within the industrial network environment.
The impact extends beyond simple code injection as it fundamentally undermines the integrity of the control system's programming environment. This vulnerability allows for the creation of backdoors that can be activated at any time, potentially enabling attackers to manipulate production processes, alter safety systems, or exfiltrate sensitive operational data. The persistence mechanism created by this vulnerability means that even if the initial access is compromised, the malicious code remains embedded within the controller's logic, making it extremely difficult to detect and remove through conventional means.
Organizations should implement comprehensive monitoring of controller programming activities and establish strict access controls for administrative privileges. The recommended mitigations include implementing network segmentation to limit access to industrial workstations, deploying application whitelisting solutions, and establishing regular code review processes for controller programs. Additionally, organizations should consider implementing industrial network monitoring solutions that can detect anomalous behavior in controller communications. This vulnerability aligns with ATT&CK technique T1059.006 for "Command and Scripting Interpreter: Visual Basic" and T1546.008 for "Exploitation for Privilege Escalation" within the enterprise attack framework, highlighting the need for both endpoint and network-level defenses.