6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
0.001 Low
EPSS
Percentile
50.1%
**ATTENTION:**Remotely exploitable/low skill level to exploit.
Vendor: Moxa
Equipment: NPort W2150A and W2250A
Vulnerability: Credentials Management
The following versions of NPort, a serial network interface, are affected:
Successful exploitation of this vulnerability could allow unauthorized access.
Moxa has produced new firmware Version 2.1 for the affected devices that can be downloaded from:
https://www.moxa.com/support/download.aspx?type=support&id=14781
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 default password is empty on the device. An unauthorized user can access the device without a password. An unauthorized user has the ability to completely compromise the confidentiality and integrity of the wireless traffic.
CVE-2017-16727 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).
Federico Maggi reported the vulnerability to ICS-CERT.
Critical Infrastructure Sectors: Critical Manufacturing, Energy, and Transportation Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Taiwan
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-16727
cwe.mitre.org/data/definitions/255.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
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6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:P/A:N
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
0.001 Low
EPSS
Percentile
50.1%