CVE-2020-7493 in EcoStruxure Operator Terminal Expert
Summary
by MITRE
A CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability exists in EcoStruxure Operator Terminal Expert 3.1 Service Pack 1 and prior (formerly known as Vijeo XD) which could cause malicious code execution when opening the project file.
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Analysis
by VulDB Data Team • 11/20/2020
The CVE-2020-7493 vulnerability represents a critical sql injection flaw in EcoStruxure Operator Terminal Expert 3.1 Service Pack 1 and earlier versions, formerly known as Vijeo XD. This vulnerability falls under the well-established CWE-89 category, which specifically addresses improper neutralization of special elements used in sql commands. The flaw manifests when the software processes project files, creating an avenue for attackers to execute malicious code through crafted input that gets improperly handled within sql queries. The vulnerability is particularly concerning in industrial control systems environments where these terminals are commonly deployed, as it could potentially compromise the integrity of critical infrastructure operations.
The technical implementation of this vulnerability occurs within the project file parsing mechanism of the software, where user-supplied data is directly incorporated into sql command strings without adequate sanitization or parameterization. When an attacker crafts a malicious project file containing specially formatted sql injection payloads, the application fails to properly escape or validate the input before executing database operations. This allows the attacker to manipulate the intended sql query execution, potentially gaining unauthorized access to database contents, executing arbitrary commands, or even escalating privileges within the system. The vulnerability is classified as a persistent threat since the malicious code execution occurs during the project file opening process, making it particularly stealthy and difficult to detect through normal monitoring procedures.
The operational impact of this vulnerability extends beyond simple data compromise, as it directly threatens the availability and integrity of industrial control systems. In environments where EcoStruxure Operator Terminal Expert is deployed for human machine interface (hmi) operations, successful exploitation could lead to unauthorized modification of process control parameters, disruption of production workflows, or complete system compromise. The vulnerability's potential for remote code execution makes it particularly dangerous in connected industrial environments where these terminals might be accessible over networks. According to attack frameworks such as the mitre attack matrix, this vulnerability could be leveraged for initial access and persistence within industrial control system networks, potentially enabling more sophisticated attacks against critical infrastructure components. Organizations relying on these systems face significant risk of operational disruption, data breaches, and potential safety hazards in industrial environments where process control is paramount.
Mitigation strategies for CVE-2020-7493 should prioritize immediate software updates to the latest available service pack or version that addresses the sql injection vulnerability. Organizations should implement strict file validation procedures for all project files, particularly those received from external sources or untrusted entities, utilizing file integrity checking mechanisms and sandboxed environments for file analysis. Network segmentation and access controls should be enforced to limit exposure of these terminals to untrusted networks, while regular security assessments should be conducted to identify potential exploitation attempts. Additionally, implementing database query parameterization and input validation at multiple layers of the application architecture can provide defense in depth against similar vulnerabilities. The vulnerability highlights the importance of secure coding practices in industrial software development and aligns with cybersecurity frameworks such as nist cybersecurity framework and iso 27001 standards for protecting critical infrastructure assets.