Vendor: SIMPlight Equipment: SCADA Software Vulnerability: Uncontrolled Search Path Element
Advisory URL: https://ipositivesecurity.com/2017/09/01/ics-simplight-scada-software-insecure-library-loading-allows-code-execution/ ICS-CERT Advisory https://ics-cert.us-cert.gov/advisories/ICSA-17-222-01 ------------------------ AFFECTED PRODUCTS ------------------------ The following versions of SIMPlight SCADA software, software for building management systems and automated facilities, are affected: SCADA Software version 4.3.0.27 and prior. ------------------------ BACKGROUND ------------------------ Critical Infrastructure Sector(s): Chemical, Commercial Facilities, Critical Manufacturing, Defense Industrial Base, Energy, Food and Agriculture, Government Facilities, Healthcare and Public Health, Nuclear Reactors, Materials, and Waste Countries/Areas Deployed: Unknown Company Headquarters Location: Russia ------------------------ IMPACT ------------------------ Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code. ------------------------ VULNERABILITY OVERVIEW ------------------------ UNCONTROLLED SEARCH PATH ELEMENT CWE-427 An uncontrolled search path element vulnerability has been identified, which may execute malicious DLL files that have been placed within the search path. By placing specific DLL file(s), an attacker is able to force the process to load an arbitrary DLL. This allows an attacker to execute arbitrary code in the context of the process when it is run. CVE-2017-9661 has been assigned to this vulnerability. A CVSS v3 base score of 7.0 has been assigned; the CVSS vector string is (AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H). ------------------------ Missing Libraries ------------------------ iopc2.dll ------------------------ Application Executables (that look for missing DLL) ------------------------ ArchBrowser.exe Designer.exe Monitor.exe ------------------------ Steps to reproduce ------------------------ 1. Generate a dll payload msfvenom –p windows/exec cmd=calc.exe –f dll –o iopc2.dll 2. Place this dll in any directory defined in the PATH environment variable C:\app-folder-RW\ 3. Run ArchBrowser.exe (or any from listed above) -> calc.exe will execute +++++ Best Regards, Karn Ganeshen _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/
