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
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
74.3%
CVSS v3 6.6
ATTENTION: Low skill level to exploit
Vendor: Delta Electronics
Equipment: Delta Industrial Automation TPEditor
Vulnerabilities: Out-of-bounds Write, Stack-based Buffer Overflow
Successful exploitation of these vulnerabilities could crash the accessed device, resulting in a buffer overflow condition that may allow remote code execution.
The following versions of Delta Industrial Automation TPEditor, a programming software for Delta text panels operating on Windows, are affected:
Multiple stack-based buffer overflow vulnerabilities may be exploited by processing specially crafted project files lacking user input validation before copying data from project files onto the stack and may allow an attacker to remotely execute arbitrary code.
CVE-2018-17929 has been assigned to this vulnerability. A CVSS v3 base score of 6.6 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H).
Multiple out-of-bounds write vulnerabilities may be exploited by processing specially crafted project files lacking user input validation, which may cause the system to write outside the intended buffer area and may allow remote code execution.
CVE-2018-17927 has been assigned to this vulnerability. A CVSS v3 base score of 6.6 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H).
Ariele Caltabiano (kimiya) of 9SG Security Team and Mat Powell working with Trend Microβs Zero Day Initiative (ZDI) reported these vulnerabilities to NCCIC.
Delta Electronics recommends affected users update to the latest version of Delta Industrial Automation TPEditor, Version 1.91, which is available for download at: http://www.deltaww.com/Products/PluginWebUserControl/downloadCenterCounter.aspx?DID=4536&DocPath=1&hl=en-US.
Delta Electronics also recommends affected users restrict the interaction with the application to trusted files.
NCCIC also recommends that users take the following measures to protect themselves from social engineering attacks:
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.
No known public exploits specifically target these vulnerabilities. These vulnerabilities are not exploitable remotely.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-17927
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-17929
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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
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
74.3%