9 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:P/I:P/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.028 Low
EPSS
Percentile
90.7%
**ATTENTION:**Remotely exploitable. Low skill level to exploit.
Vendor: FATEK Automation
Equipment: PLC Ethernet Module
Vulnerability: Stack-based buffer overflow
The affected Ether_cfg software configuration tool runs on the following Fatek PLCs:
Successful exploitation of this vulnerability could allow a remote attacker to crash the affected device or allow remote code execution.
FATEK Automation has created a new version of the βether_cfg software toolβ to mitigate this vulnerability. This file is available to download at:
http://www.fatek.com/en/technical.php?act=software&catId=12
For more information about this vulnerability and how to mitigate it, please see the Fatek EtherConfig release note on the Fatek technical support web page:
http://www.fatek.com/en/technical.php?act=software&catId=1
NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
ICS-CERT 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 ICSβCERT Technical Information Paper, ICS-TIP-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to ICS-CERT for tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability.
The stack-based buffer overflow vulnerability has been identified, which may allow remote code execution or crash the affected device.
CVE-2017-6023 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).
An anonymous researcher working with Trend Microβs Zero Day Initiative identified this vulnerability.
Critical Infrastructure Sector(s): Commercial Facilities, Critical Manufacturing
Countries/Areas Deployed: Asia and Europe
Company Headquarters Location: Taiwan
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-6023
www.fatek.com/en/technical.php?act=software&catId=1
www.fatek.com/en/technical.php?act=software&catId=12
cwe.mitre.org/data/definitions/121.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=FATEK%20Automation%20PLC%20Ethernet%20Module+https://www.cisa.gov/news-events/ics-advisories/icsa-17-073-01
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-17-073-01&title=FATEK%20Automation%20PLC%20Ethernet%20Module
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-17-073-01
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-17-073-01
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=FATEK%20Automation%20PLC%20Ethernet%20Module&body=www.cisa.gov/news-events/ics-advisories/icsa-17-073-01
9 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:P/I:P/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.028 Low
EPSS
Percentile
90.7%