SCADA Vulnerabilities & Exposures (SVE)

CRITIFENCE® SCADA Vulnerabilities and Exposures Database (SVE)

[SVE-684585733] IBHsoftec S7-SoftPLC CPX43 Heap-based Buffer Overflow Vulnerability

Date Type Platform Author EDB-ID CVE-ID OSVDB-ID Download App SIS Signature
2016-11-01SOFTWAREIBHsoftec S7-SoftPLCAriele Caltabiano (kimiya)N/ACVE-2016-8364N/AN/AN/A

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# IBHsoftec S7-SoftPLC CPX43 Heap-based Buffer Overflow Vulnerability
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### OVERVIEW

Ariele Caltabiano (kimiya) working with Trend Micro's Zero Day Initiative has identified a buffer overflow vulnerability in IBHsoftec's S7-SoftPLC. IBHsoftec has produced a new version to mitigate this vulnerability.

This vulnerability could be exploited remotely.





### AFFECTED PRODUCTS

IBHsoftec reports that the vulnerability affects the following versions of S7-SoftPLC:

S7-SoftPLC versions prior to 4.12b





### IMPACT

An attacker who exploits this vulnerability may be able to affect integrity, confidentiality, and availability of the target device.

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.





### BACKGROUND

IBHsoftec GmbH is a Germany-based company that sells products through distributors worldwide.

S7-SoftPLC, is a software program meant to replace a hardware PLC. These products are deployed across several sectors including Critical Manufacturing, Energy, and Water and Wastewater Systems. IBHsoftec estimates that these products are used primarily in Europe, Asia, and the United States.





### VULNERABILITY CHARACTERIZATION


# VULNERABILITY OVERVIEW


HEAP-BASED BUFFER OVERFLOW

Object memory can read a network packet that is larger than the space that is available.
CVE-2016-8364 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).





### VULNERABILITY DETAILS


# EXPLOITABILITY

This vulnerability could be exploited remotely.


# EXISTENCE OF EXPLOIT

No known public exploits specifically target this vulnerability.


# DIFFICULTY

An attacker with a low skill would be able to exploit this vulnerability.




### MITIGATION

IBHsoftec has released a new version to address this vulnerability. It can be located on its web site at the following locations:

https://download.ibhsoftec.com/english/Demos/SoftPLC-Demo.exe

http://download.ibhsoftec.com/neutral/SoftPLC-Setup.exe