Source: https://www.us-cert.gov/ics/advisories/ICSA-18-142-01
Timestamp: 2019-07-18 01:25:08
Document Index: 755053174

Matched Legal Cases: ['art 1', 'art 1', 'art 2', 'art 2', 'art 3', 'art 3', 'art 4', 'art 4', 'art 5', 'art 5']

Martem TELEM-GW6/GWM (Update B) | CISA
ICS Advisory (ICSA-18-142-01)
Original release date: May 22, 2018 | Last revised: August 30, 2018
Vendor: Martem
Equipment: TELEM-GW6/GWM
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Vulnerabilities: Missing Authentication for Critical Function, Incorrect Default Permissions, Resource Exhaustion, Cross-Site Scripting
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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:
GW6 versions prior to 2.0.87-4018403-k4, and
GWM versions prior to 2.0.87-4018403-k4.
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.
CVE-2018-10603 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L).
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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.
CVE-2018-10605 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
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4.2.2 UNCONTROLLED RESOURCE CONSUMPTION ('RESOURCE EXHAUSTION') CWE-400
Creating new connections to one or more IOAs, without closing them properly, may cause a denial of service within the industrial process control channel.
CVE-2018-10607 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H).
4.2.3 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING') CWE-79
Improper sanitization of data over a Websocket may allow cross-site scripting and client-side code execution with target user privileges.
CVE-2018-10609 has been assigned to this vulnerability. A CVSS v3 base score of 7.4 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N).
Countries/Areas Deployed: Estonia, Latvia, Lithuania, and Finland
Company Headquarters Location: Estonia
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:
http://phobos.martem.ee/shr/dsum/Telem-GWS_usermanual.pdf
Martem recommends the following mitigations for CVE-2018-10603 and CVE-2018-10607:
In most cases, these vulnerabilities can be resolved by proper configuration:
Using "other side IP" field in RTU configuration for every TCP/IP channel. This will minimize the risk of allowing unauthorized access and control over the communication channels (i.e., only trusted partners are allowed);
Using secure VPN channels;
Proper packet filtering by enabling firewall in RTU configuration. Note that the "interface" field of every communication channel must be properly set in RTU configuration when firewall is enabled.
See Martem Security Advisory SA1805182 and SA1805184:
http://martem.eu/csa/Martem_CSA_Telem_1805182.pdf
http://martem.eu/csa/Martem_CSA_Telem_1805184.pdf
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Martem recommends the following mitigations for CVE-2018-10605:
Upgrade to new firmware release 2.0.87-4018403- k4 or newer
Change default passwords to reasonably strong ones.
Implement firewall rules to limit unsanctioned SSH access for IPv4 and IPv6.
Use SSH public key authorization.
Ensure GWS.exe is up to date.
See Martem Security Advisory SA1805183:
https://martem.eu/csa/Martem_CSA_Telem_1805183.pdf
Martem recommends the following mitigations for CVE-2018-10609:
Upgrade to firmware 2.0.72-cb42e64-k4 or newer. Contact Martem for more information.
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WebServer should be turned on according to need of the configurator. If the WebServer is not needed anymore, then it should be removed from the configuration.
WebServer access should be protected by strong password to avoid unauthorized access. Other side IP should be defined in configuration. Use firewall to avoid untrusted connections and to restrict the number of parallel connections to the WebServer.
See Martem Security Advisory SA1805181:
http://martem.eu/csa/Martem_CSA_Telem_1805181.pdf