SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-377403721] Delta Electronics WPLSoft, ISPSoft, and PMSoft Vulnerabilities

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2016-12-13PLCDelta Electronicsaxt, Ariele CaltabianoN/ACVE-2016-5805 CVE-2016-5802 N/AN/AN/A

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# Delta Electronics WPLSoft, ISPSoft, and PMSoft Vulnerabilities
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### OVERVIEW

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



### IMPACT

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.



### BACKGROUND

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)

OUT-OF-BOUNDS WRITEd
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

# EXPLOITABILITY

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.



# DIFFICULTY

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.



### MITIGATION

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:
ISPSoft V3.02.11
http://www.deltaww.com/filecenter/Products/download/06/060301/Software/DELTA_IA-PLC_ISPSoft-V3-02-11_SW_20161115.zip


PMSoft V2.10.10
http://www.deltaww.com/filecenter/Products/download/06/060301/Software/DELTA_IA-PLC_PMSoft-V2-10-10_SW_20161115.zip


WPLSoft V2.42.11
http://www.deltaww.com/filecenter/Products/download/06/060301/Software/DELTA_IA-PLC_WPLSoft-V2-42-11_SW_20161115.zip