|2016-12-13||PLC||Delta Electronics||axt, Ariele Caltabiano||N/A||CVE-2016-5805 CVE-2016-5802 ||N/A||N/A||N/A|
# Delta Electronics WPLSoft, ISPSoft, and PMSoft Vulnerabilities
Researchers axt and Ariele Caltabiano each working with Trend Micro's Zero Day Initiative (ZDI) have identified vulnerabilities in Delta Electronics’ WPLSoft, ISPSoft, and PMSoft software applications. Delta Electronics has produced new software versions to mitigate these vulnerabilities.
### AFFECTED PRODUCTS
The following Delta Electronics products and versions are affected:
WPLSoft, Versions prior to V2.42.11,
ISPSoft, Versions prior to 3.02.11, and
PMSoft, Versions prior to2.10.10
Successful exploitation of these vulnerabilities may allow an attacker to execute arbitrary code.
Impact to individual organizations depends on many factors that are unique to each organization. NCCIC/ICS-CERT recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation.
Delta Electronics is a Taiwan-based company that maintains offices in several countries around the world, including China, Japan, South Korea, Singapore, India, Brazil, and the US.
The affected products, WPLSoft, ISPSoft, and PMSoft, are platforms for editing the control software of Delta DVP series motion controlling programmable logic controllers (PLCs). According to Delta Electronics, these platforms are used to prepare process control systems (PCSs) for deployment across a variety of industrial automation environments within the Critical Manufacturing Sector. Delta Electronics estimates that these products are used primarily in ASIA and Europe with a small percentage in the US.
### VULNERABILITY CHARACTERIZATION
# VULNERABILITY OVERVIEW
HEAP-BASED BUFFER OVERFLOWa
There are multiple instances of heap-based buffer overflows that may allow malicious files to cause the execution of arbitrary code or a denial of service.
CVE-2016-5805b has been assigned to these vulnerabilities. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Multiple instances of out-of-bounds conditions may allow malicious files to be read and executed by the affected software.
CVE-2016-5802e has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
### VULNERABILITY DETAILS
These vulnerabilities are not exploitable remotely and cannot be exploited without user interaction. These exploits are triggered when a local user runs the vulnerable application and loads malformed files with .dvp or other extensions.
# EXISTENCE OF EXPLOIT
No known public exploits specifically target these vulnerabilities in these products.
Crafting a working exploit for these vulnerabilities would be difficult. Social engineering is required to convince the user to accept the malformed file. Additional user interaction is needed to load the malformed file. This decreases the likelihood of a successful exploit.
Delta Electronics recommends affected users update their software to the latest versions ISPSoft V3.02.11, PMSoft V2.10.10, and WPLSoft V2.42.11 that are available through the following links: