CVSS v3 10.0
ATTENTION: Exploitable remotely/low skill level to exploit
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This updated advisory is a follow-up to the original advisory titled ICSA-18-142-01 Martem TELEM-GW6/GWM that was published May 22, 2018, on the NCCIC/ICS-CERT website.
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Successful exploitation of these vulnerabilities could allow execution of unauthorized industrial process control commands, full control over RTU, denial of service, or client-side code execution.
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The following TELEM products with insecure configurations are affected:
Not all versions are affected by all vulnerabilities.
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The RTU does not perform authentication of IEC-104 control commands, which may allow a rogue node a remote control of the industrial process.
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Using default credentials to connect to the RTU, unprivileged user may modify/upload a new system configuration or take the full control over the RTU.
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Creating new connections to one or more IOAs, without closing them properly, may cause a denial of service within the industrial process control channel.
Improper sanitization of data over a Websocket may allow cross-site scripting and client-side code execution with target user privileges.
Bernhards Blumbergs and Arturs Danilevics of CERT.LV, Latvia, reported these vulnerabilities to NCCIC.
Martem has provided updated information within the “Security Considerations” section of their Configuration Manual which can be accessed at following link:
Martem recommends the following mitigations for CVE-2018-10603 and CVE-2018-10607:
In most cases, these vulnerabilities can be resolved by proper configuration:
See Martem Security Advisory SA1805182 and SA1805184:
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Martem recommends the following mitigations for CVE-2018-10605:
See Martem Security Advisory SA1805183:
Martem recommends the following mitigations for CVE-2018-10609:
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See Martem Security Advisory SA1805181:
NCCIC recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:
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 on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
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.
NCCIC also recommends that users take the following measures to protect themselves from social engineering attacks:
No known public exploits specifically target these vulnerabilities.
For any questions related to this report, please contact the CISA at:
Toll Free: 1-888-282-0870
For industrial control systems cybersecurity information: https://us-cert.cisa.gov/ics
or incident reporting: https://us-cert.cisa.gov/report
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