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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
EPSS
Percentile
81.2%
**ATTENTION:**Remotely exploitable/low skill level to exploit.
Vendor: WECON Technology Co., Ltd. (WECON)
Equipment: LeviStudio HMI editor
Vulnerability: Heap-based Buffer Overflow
All versions of LeviStudio HMI, an HMI editor, are affected.
Successful exploitation of this vulnerability could cause the device that the attacker is accessing to crash; a buffer overflow condition may allow remote code execution.
WECON recommends that users update to the latest version, which can be found at the following location:
<http://www.we-con.com.cn/en/download.aspx?id=45>
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 heap-based buffer overflow vulnerability has been identified, which may allow remote code execution.
CVE-2017-16717 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).
Michael DePlante, working with Trend Microβs Zero Day Initiative, reported the vulnerability to ICS-CERT.
Critical Infrastructure Sectors: Critical Manufacturing, Energy, Water and Wastewater Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: China
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-16717
www.we-con.com.cn/en/download.aspx?id=45
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cwe.mitre.org/data/definitions/122.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
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mailto:?subject=WECON%20Technology%20Co.%2C%20Ltd.%20LeviStudio%20HMI%20Editor&body=www.cisa.gov/news-events/ics-advisories/icsa-17-353-05
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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
EPSS
Percentile
81.2%