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1. EXECUTIVE SUMMARY
- CVSS v4 8.5
- ATTENTION: Low attack complexity
- Vendor: Open Automation Software
- Equipment: Open Automation Software
- Vulnerability: Incorrect Execution-Assigned Permissions
2. RISK EVALUATION
Successful exploitation of this vulnerability could result in an attacker executing code with escalated privileges.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Open Automation Software, an HMI, SCADA, and IoT solution, are affected:
- Open Automation Software: prior to V20.00.0076
3.2 Vulnerability Overview
3.2.1 INCORRECT EXECUTION-ASSIGNED PERMISSIONS CWE-279
A local low-level user on the server machine with credentials to the running OAS services can create and execute a report with an rdlx file on the server system itself. Any code within the rdlx file of the report executes with SYSTEM privileges, resulting in privilege escalation.
CVE-2024-11220 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
A CVSS v4 score has also been calculated for CVE-2024-11220. A base score of 8.5 has been calculated; the CVSS vector string is (AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
elcazator of Elex Feigong Research Institute of Elex CyberSecurity Inc. reported this vulnerability to CISA.
4. MITIGATIONS
Open Automation Software recommends users upgrade OAS to V20.00.0076 or later. The upgrade can be downloaded from the Open Automation Software website.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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 cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.
5. UPDATE HISTORY
- December 3, 2024: Initial Publication
