Directory traversal vulnerability in gefebt.exe in the WebView CimWeb components in GE Intelligent Platforms Proficy HMI/SCADA - CIMPLICITY through 8.2 SIM 24, and Proficy Process Systems with CIMPLICITY, allows remote attackers to execute arbitrary code via a crafted HTTP request, aka ZDI-CAN-1622.

The CIMPLICITY Web-based access component, CimWebServer, does not check the location of shell files being loaded into the system. By modifying the source location, an attacker could send shell code to the CimWebServer which would deploy the nefarious files as part of any SCADA project. This could allow the attacker to execute arbitrary code.