CVE-2021-33013 in myPRO
Summary
by MITRE • 05/13/2022
mySCADA myPRO versions prior to 8.20.0 does not restrict unauthorized read access to sensitive system information.
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Analysis
by VulDB Data Team • 05/18/2022
The vulnerability identified as CVE-2021-33013 affects mySCADA myPRO versions earlier than 8.20.0, representing a critical security flaw in industrial control systems that exposes sensitive system information to unauthorized parties. This vulnerability falls under the category of information disclosure, where proper access controls are missing or improperly implemented, allowing malicious actors to gain unauthorized visibility into system internals. The affected system is part of the mySCADA ecosystem, which is commonly used in industrial environments for monitoring and control of critical infrastructure operations.
The technical flaw manifests as insufficient authorization checks within the system's information retrieval mechanisms. When legitimate users or unauthorized parties attempt to access system information through the myPRO interface, the system fails to properly validate user credentials or roles before granting access to sensitive data. This weakness creates a direct pathway for information leakage that can include system configurations, user credentials, operational parameters, and other confidential data that should remain restricted to authorized personnel only. The vulnerability is classified as a weakness in authorization mechanisms, aligning with CWE-284 which addresses improper access control issues. Attackers can exploit this flaw by simply attempting to access restricted system information without proper authentication, potentially leading to comprehensive reconnaissance of the industrial control environment.
The operational impact of this vulnerability extends beyond simple information disclosure, as it significantly weakens the overall security posture of industrial control systems. Unauthorized access to sensitive system information can enable attackers to understand system architecture, identify potential attack vectors, and develop more sophisticated exploitation strategies. This information can be leveraged for privilege escalation, lateral movement within the network, or to plan targeted attacks against specific system components. The vulnerability particularly affects industrial environments where mySCADA systems are deployed for critical infrastructure monitoring, as it provides attackers with valuable intelligence that could be used to compromise operational technology networks. From an adversarial perspective, this vulnerability aligns with ATT&CK technique T1082 which involves discovering system information, and T1566 which covers social engineering tactics that can be enhanced by having access to system details.
Organizations should immediately implement remediation measures including upgrading to myPRO version 8.20.0 or later, which contains the necessary patches to address the authorization bypass issue. Additionally, network segmentation should be implemented to limit access to these systems, and regular security assessments should be conducted to identify similar vulnerabilities in other industrial control system components. Access controls should be reviewed and strengthened to ensure proper role-based access, and monitoring should be enhanced to detect unauthorized access attempts. The vulnerability demonstrates the critical importance of maintaining up-to-date industrial control system software and implementing proper security controls in operational technology environments. Security teams should also consider implementing network access controls and intrusion detection systems to monitor for exploitation attempts targeting this specific vulnerability.