6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.2 High
AI Score
Confidence
High
0.006 Low
EPSS
Percentile
78.5%
CVSS v3 6.3
ATTENTION: Exploitable remotely/low skill level to exploit
**Vendor:**INVT Electric
**Equipment:**VT-Designer
**Vulnerabilities:**Deserialization of Untrusted Data, Heap-based Buffer Overflow
Successful exploitation of these vulnerabilities could cause the program to crash and may allow remote code execution.
ZDI reports the following versions of VT-Designer are affected:
Other versions could also be affected.
The program populates objects with user supplied input via a file without first checking for validity, allowing attacker supplied input to be written to known memory locations. This may cause the program to crash or allow remote code execution.
CVE-2018-18987 has been assigned to this vulnerability. A CVSS v3 base score of 6.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L).
The program reads the contents of a file (which is already in memory) into another heap-based buffer, which may cause the program to crash or allow remote code execution.
CVE-2018-18983 has been assigned to this vulnerability. A CVSS v3 base score of 6.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L).
Ariele Caltabiano (kimiya) working with Trend Microβs Zero Day Initiative reported these vulnerabilities to NCCIC.
INVT Electricβs mitigations for these vulnerabilities are not yet available.
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. 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-12-146-01BβTargeted 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.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-18983
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-18987
cwe.mitre.org/data/definitions/122.html
cwe.mitre.org/data/definitions/502.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
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mailto:?subject=INVT%20Electric%20VT-Designer&body=www.cisa.gov/news-events/ics-advisories/icsa-18-333-01
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.2 High
AI Score
Confidence
High
0.006 Low
EPSS
Percentile
78.5%