|2016-07-12||HMI||General Electric CIMPLICITY||Zhou Yu||N/A||2016-5787||N/A||N/A||N/A|
# GE Proficy HMI SCADA CIMPLICITY Privilege Management Vulnerability
Zhou Yu of Acorn Network Security identified an improper privilege management vulnerability and recently released exploit code for the GE Proficy HMI/SCADA CIMPLICITY application without coordination with ICS-CERT, the vendor, or any other coordinating entity known to ICS-CERT. GE produced a new version to mitigate this vulnerability in August 2014.
Exploits that target this vulnerability are known to be publicly available.
### AFFECTED PRODUCTS
The following Proficy HMI/SCADA-CIMPLICITY versions are affected:
CIMPLICITY Version 8.2, SIM 26 or earlier.
Successful exploitation of the vulnerability may allow an authenticated user on the system to modify the configuration of the CIMPLICITY service and launch any executable on the system as a service.
Impact to individual organizations depends on many factors that are unique to each organization. NCCIC/ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation.
GE is a US-based company that maintains offices in several countries around the world.
The affected product, Proficy HMI/SCADA-CIMPLICITY, is a Client/Server-based human-machine interface/supervisory control and data acquisition (HMI/SCADA) application. According to GE, Proficy HMI/SCADA-CIMPLICITY is deployed across several sectors.
### VULNERABILITY CHARACTERIZATION
# VULNERABILITY OVERVIEW
IMPROPER PRIVILEGE MANAGEMENT
Vulnerable versions may allow users to modify the CIMPLICITY service to edit the configuration of a service.
CVE-2016-5787 has been assigned to this vulnerability. A CVSS v3 base score of 5.7 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L).
### VULNERABILITY DETAILS
This vulnerability is not exploitable remotely and cannot be exploited without user interaction. The exploit is only triggered when a local user runs the vulnerable application and loads a malicious file.
# EXISTENCE OF EXPLOIT
Exploits that target this vulnerability are publicly available.
An attacker with a low skill would be able to exploit this vulnerability. Social engineering is required to convince the user to accept a malicious file. Additional user interaction is needed to load the malformed file. This decreases the likelihood of a successful exploit.
In response to a recent public disclosure of proof-of-concept exploit code, GE has released a notification to its users of the identified vulnerability in an older version of the Proficy HMI/SCADA-CIMPLICITY application, along with the mitigation. GE's notification is available at the following location:
In August 2014, GE released a new version of Proficy HMI/SCADA-CIMPLICITY, Version 8.2, Sim 27 that mitigated the identified vulnerability, which is available at the following location with a valid account:
GE recommends that users upgrade to Proficy HMI/SCADA-CIMPLICITY, Version 8.2, SIM 27 or later versions. The latest version of CIMPLICITY Version 8.2 SIM 43, is available at the following location, with a valid account: