7.8 High
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
8 High
AI Score
Confidence
High
9.3 High
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.009 Low
EPSS
Percentile
82.9%
Successful exploitation of these vulnerabilities could allow an attacker to read/modify information, execute arbitrary code, and/or crash the application.
The following versions of Advantech WebAccess HMI Designer, a Human Machine Interface (HMI) runtime development software, are affected:
Multiple heap-based buffer overflow vulnerabilities may be exploited by opening specially crafted project files that may overflow the heap, which may allow remote code execution, disclosure/modification of information, or cause the application to crash.
CVE-2020-16207 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
An out-of-bounds read vulnerability may be exploited by processing specially crafted project files, which may allow an attacker to read information.
CVE-2020-16211 has been assigned to this vulnerability. A CVSS v3 base score of 3.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N).
Processing specially crafted project files lacking proper validation of user supplied data may cause the system to write outside the intended buffer area, which may allow remote code execution, disclosure/modification of information, or cause the application to crash.
CVE-2020-16213 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Processing specially crafted project files lacking proper validation of user supplied data may cause a type confusion condition, which may allow remote code execution, disclosure/modification of information, or cause the application to crash.
CVE-2020-16229 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Processing specially crafted project files lacking proper validation of user supplied data may cause a stack-based buffer overflow, which may allow remote code execution, disclosure/modification of information, or cause the application to crash.
CVE-2020-16215 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
A double free vulnerability caused by processing specially crafted project files may allow remote code execution, disclosure/modification of information, or cause the application to crash.
CVE-2020-16217 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
kimiya and Natnael Samson (@NattiSamson) working with Trend Microβs Zero Day Initiative reported these vulnerabilities to CISA.
Advantech has released Version 2.1.9.81 of WebAccess HMI Designer to address the reported vulnerabilities. Users can download the latest version of WebAccess HMI Designer.
CISA recommends users take the following measures to protect themselves from social engineering attacks:
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.gov. 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 webpage on us-cert.gov 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 CISA for tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-16207
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-16211
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-16213
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-16215
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-16217
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-16229
cwe.mitre.org/data/definitions/121.html
cwe.mitre.org/data/definitions/122.html
cwe.mitre.org/data/definitions/125.html
cwe.mitre.org/data/definitions/415.html
cwe.mitre.org/data/definitions/787.html
cwe.mitre.org/data/definitions/843.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.advantech.com/support/DownloadSRDetail_New.aspx?SR_ID=1-F6UG0T&Doc_Source=Download
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7.8 High
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
8 High
AI Score
Confidence
High
9.3 High
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.009 Low
EPSS
Percentile
82.9%