7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.4 High
AI Score
Confidence
High
0.005 Low
EPSS
Percentile
76.6%
Successful exploitation of these vulnerabilities could allow a remote attacker to gain unauthorized access to the device, affecting the confidentiality, integrity, and availability of the device the attacker is targeting.
The following versions of industrial Ethernet switches are affected:
The authentication mechanism has no brute-force prevention.
CVE-2019-16670 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).
Remote authenticated users can crash a device by using a special packet.
CVE-2019-16671 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Sensitive credentials data is transmitted in cleartext.
CVE-2019-16672 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).
Passwords are stored in cleartext and can be read by anyone with access to the device.
CVE-2019-16673 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
Authentication information used in a cookie is predictable and can lead to admin password compromise when captured on the network.
CVE-2019-16674 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).
CERT@VDE reported these vulnerabilities to CISA.
CERT@VDE and Weidmueller report the following mitigations:
Solutions for CVE-2019-16672
Solution for vulnerabilities, valid for switch series IE-SW-VL05M and IE-SW-VL08MT
Solution for vulnerabilities valid for switch series IE-SW-PL08M, IE-SW-PL10M, IE-SW-PL16M, IE-SW-PL18M, and IE-SW-PL09M
Solution for CVE-2019-16670, CVE-2019-16671, CVE-2019-16673, and CVE-2019-16674
Valid for switch series IE-SW-VL05M, IE-SW-VL08MT, IE-SW-PL08M, IE-SW-PL10M, IE-SW-PL16M, IE-SW-PL18M, and IE-SW-PL09M
Note: After disabling the unencrypted search service, the switches can no longer be found or configured with the current “WM Switch Utility.”
Web interface settings are not affected by this configuration.
Below are the patched versions available for the respective industrial ethernet switch model:
For more information see the CERT@VDE advisory located at: <https://cert.vde.com/en-us/advisories/vde-2019-018> or contact Weidmueller at www.weidmueller.com/service.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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-12-146-01B–Targeted 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-2019-16670
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-16671
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-16672
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-16673
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-16674
www.weidmueller.com/service
cert.vde.com/en-us/advisories/vde-2019-018
cwe.mitre.org/data/definitions/256.html
cwe.mitre.org/data/definitions/307.html
cwe.mitre.org/data/definitions/311.html
cwe.mitre.org/data/definitions/341.html
cwe.mitre.org/data/definitions/400.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Weidmueller%20Industrial%20Ethernet%20Switches+https://www.cisa.gov/news-events/ics-advisories/icsa-19-339-02
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-19-339-02&title=Weidmueller%20Industrial%20Ethernet%20Switches
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-19-339-02
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-19-339-02
www.us-cert.gov/ics
www.us-cert.gov/ics
www.us-cert.gov/ics/alerts/ICS-ALERT-10-301-01
www.us-cert.gov/ics/recommended-practices
www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B
www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Weidmueller%20Industrial%20Ethernet%20Switches&body=www.cisa.gov/news-events/ics-advisories/icsa-19-339-02
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.4 High
AI Score
Confidence
High
0.005 Low
EPSS
Percentile
76.6%