mySCADA myPRO

1. EXECUTIVE SUMMARY

• CVSS v3 X8.2 ***ATTENTION: **Exploitable remotely/low attack complexity
• **Vendor:**mySCADA
• **Equipment:**myPRO
• Vulnerabilities: Improper Access Control, Unrestricted Upload of File with Dangerous Type, Path Traversal, Exposure of Information Through Directory Listing

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow unauthorized users the ability to access sensitive information and upload arbitrary files.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of myPro are affected:

• All versions prior to 8.20.0

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER ACCESS CONTROL CWE-284

The affected product does not restrict unauthorized read access to sensitive system information.

CVE-2021-33013 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N).

3.2.2 UNRESTRICTED UPLOAD OF FILE WITH DANGEROUS TYPE CWE-434

The affected product allows an unauthenticated remote attacker to upload arbitrary files to the file system.

CVE-2021-33009 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

3.2.3 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY (‘PATH TRAVERSAL’) CWE-22

The affected product allows an unauthenticated remote attacker to upload arbitrary files to arbitrary directories.

CVE-2021-33005 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

3.2.4 EXPOSURE OF INFORMATION THROUGH DIRECTORY LISTING CWE-548

The affected product does not restrict unauthorized read access to sensitive directory listing information.

CVE-2021-27505 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

3.3 BACKGROUND

• **CRITICAL INFRASTRUCTURE SECTORS:**Energy, Food and Agriculture, Transportation Systems, and Water and Wastewater Systems
• **COUNTRIES/AREAS DEPLOYED:**Worldwide
• **COMPANY HEADQUARTERS LOCATION:**Czech Republic

3.4 RESEARCHER

Michael Heinzl reported these vulnerabilities to CISA.

4. MITIGATIONS

mySCADA recommends users apply update v8.20.0 or later.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:

• Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet.
• Locate control system networks and remote devices behind firewalls, and isolate them from the business network.
• When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as its connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.

No known public exploits specifically target these vulnerabilities.