ESB-2018.0657 - [Appliance] Eaton ELCSoft PLCs: Execute arbitrary code/commands - Remote with user interaction 2018-03-07

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             AUSCERT External Security Bulletin Redistribution

           A vulnerability has been identified in Eaton ELCSoft
                      Programmable Logic Controllers
                               7 March 2018


        AusCERT Security Bulletin Summary

Product:           Eaton ELCSoft PLCs
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-7511  

Original Bulletin:

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Advisory (ICSA-18-065-03)

Eaton ELCSoft

Original release date: March 06, 2018

Legal Notice

All information products included in are provided
"as is" for informational purposes only. The Department of Homeland Security 
(DHS) does not provide any warranties of any kind regarding any information 
contained within. DHS does not endorse any commercial product or service, 
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For 
more information about TLP, see

CVSS v3 6.3

ATTENTION: Exploitable remotely/low skill level to exploit.

Vendor: Eaton

Equipment: ELCSoft

Vulnerability: Improper Input Validation


ELCSoft is programming software for all Eaton ELC programmable logic 
controllers. The ELC programmable logic controllers are not affected by this 
vulnerability. The following versions of ELCSoft are affected:

ELCSoft Versions 2.04.02 and prior.


Successful exploitation of this vulnerability could allow an attacker to 
execute arbitrary code.


Eaton has released new firmware for ELCSoft that is available via the 
following link:

Eaton states the current firmware needs to be uninstalled prior to loading the

NCCIC recommends users take defensive measures to minimize the risk of 
exploitation of this vulnerability. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, and 
ensure that they are not accessible from the Internet.

Locate control system networks and remote devices behind firewalls, and 
isolate them from the business network.

When remote access is required, use secure methods, such as Virtual Private 
Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize that VPN is only
as secure as the connected devices.

NCCIC reminds organizations to perform proper impact analysis and risk 
assessment prior to deploying defensive measures.

NCCIC also provides a section for control systems security recommended 
practices on the ICS-CERT web page. Several recommended practices are 
available for reading and download, including Improving Industrial Control 
Systems Cybersecurity with Defense-in-Depth Strategies.

Additional mitigation guidance and recommended practices are publicly 
available in the NCCIC Technical Information Paper, 
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation 
Strategies, that is available for download from the ICS-CERT website.

Organizations observing any suspected malicious activity should follow their 
established internal procedures and report their findings to NCCIC for 
tracking and correlation against other incidents.

No known public exploits specifically target this vulnerability.



There are multiple cases where specially crafted files could cause a buffer 
overflow which, in turn, may allow remote execution of arbitrary code.

CVE-2018-7511 has been assigned to this vulnerability. A CVSS v3 base score of
6.3 has been assigned; the CVSS vector string is 


Ariele Caltabiano (kimiya) and axt working with Trend Micro's Zero Day 
Initiative reported the vulnerability to NCCIC.


Critical Infrastructure Sectors: Energy

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Dublin, Ireland

Contact Information

For any questions related to this report, please contact the NCCIC at:


Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information:

or incident reporting:

The NCCIC continuously strives to improve its products and services. You can 
help by choosing one of the links below to provide feedback about this 

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