10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.005 Low
EPSS
Percentile
76.4%
**ATTENTION:**Remotely exploitable/low skill level to exploit.
Vendor: PHOENIX CONTACT
Equipment: FL SWITCH
Vulnerabilities: Improper Authorization, Information Exposure
All FL SWITCH 3xxx, 4xxx, and 48xxx Series products running firmware Version 1.0 to 1.32 are affected.
Successful exploitation of these vulnerabilities may allow an unauthenticated remote attacker to gain administrative privileges and expose information to unauthenticated users.
PHOENIX CONTACT recommends that affected users upgrade to firmware Version 1.33 or higher. The updated firmware may be downloaded from the following locations:
<http://www.phoenixcontact.net/qr/2891030/firmware_update>
<http://www.phoenixcontact.net/qr/2891032/firmware_update>
<http://www.phoenixcontact.net/qr/2891033/firmware_update>
<http://www.phoenixcontact.net/qr/2891034/firmware_update>
<http://www.phoenixcontact.net/qr/2891031/firmware_update>
<http://www.phoenixcontact.net/qr/2891035/firmware_update>
<http://www.phoenixcontact.net/qr/2891036/firmware_update>
<http://www.phoenixcontact.net/qr/2891037/firmware_update>
<http://www.phoenixcontact.net/qr/2891067/firmware_update>
<http://www.phoenixcontact.net/qr/2891066/firmware_update>
<http://www.phoenixcontact.net/qr/2891058/firmware_update>
<http://www.phoenixcontact.net/qr/2891059/firmware_update>
<http://www.phoenixcontact.net/qr/2891060/firmware_update>
<http://www.phoenixcontact.net/qr/2891062/firmware_update>
<http://www.phoenixcontact.net/qr/2891061/firmware_update>
<http://www.phoenixcontact.net/qr/2891160/firmware_update>
<http://www.phoenixcontact.net/qr/2891073/firmware_update>
<http://www.phoenixcontact.net/qr/2891080/firmware_update>
<http://www.phoenixcontact.net/qr/2891086/firmware_update>
<http://www.phoenixcontact.net/qr/2891085/firmware_update>
<http://www.phoenixcontact.net/qr/2891079/firmware_update>
<http://www.phoenixcontact.net/qr/2891074/firmware_update>
<http://www.phoenixcontact.net/qr/2891063/firmware_update>
<http://www.phoenixcontact.net/qr/2891161/firmware_update>
<http://www.phoenixcontact.net/qr/2891072/firmware_update>
<http://www.phoenixcontact.net/qr/2891102/firmware_update>
<http://www.phoenixcontact.net/qr/2891104/firmware_update>
<http://www.phoenixcontact.net/qr/2891120/firmware_update>
<http://www.phoenixcontact.net/qr/2891119/firmware_update>
<http://www.phoenixcontact.net/qr/2891162/firmware_update>
NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 these vulnerabilities.
A remote unauthenticated attacker may be able to craft special HTTP requests allowing an attacker to bypass web-service authentication allowing the attacker to obtain administrative privileges on the device.
CVE-2017-16743 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
A remote unauthenticated attacker may be able to use Monitor Mode on the device to read diagnostic information.
CVE-2017-16741 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
Ilya Karpov and Evgeniy Druzhinin of Positive Technologies discovered these vulnerabilities. PHOENIX CONTACT reported to CERT@VDE that their products are affected. CERT@VDE coordinated these vulnerabilities with ICS-CERT.
Critical Infrastructure Sectors: Communications, Critical Manufacturing, Information Technology
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Germany
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-16741
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-16743
www.phoenixcontact.net/qr/2891030/firmware_update
www.phoenixcontact.net/qr/2891031/firmware_update
www.phoenixcontact.net/qr/2891032/firmware_update
www.phoenixcontact.net/qr/2891033/firmware_update
www.phoenixcontact.net/qr/2891034/firmware_update
www.phoenixcontact.net/qr/2891035/firmware_update
www.phoenixcontact.net/qr/2891036/firmware_update
www.phoenixcontact.net/qr/2891037/firmware_update
www.phoenixcontact.net/qr/2891058/firmware_update
www.phoenixcontact.net/qr/2891059/firmware_update
www.phoenixcontact.net/qr/2891060/firmware_update
www.phoenixcontact.net/qr/2891061/firmware_update
www.phoenixcontact.net/qr/2891062/firmware_update
www.phoenixcontact.net/qr/2891063/firmware_update
www.phoenixcontact.net/qr/2891066/firmware_update
www.phoenixcontact.net/qr/2891067/firmware_update
www.phoenixcontact.net/qr/2891072/firmware_update
www.phoenixcontact.net/qr/2891073/firmware_update
www.phoenixcontact.net/qr/2891074/firmware_update
www.phoenixcontact.net/qr/2891079/firmware_update
www.phoenixcontact.net/qr/2891080/firmware_update
www.phoenixcontact.net/qr/2891085/firmware_update
www.phoenixcontact.net/qr/2891086/firmware_update
www.phoenixcontact.net/qr/2891102/firmware_update
www.phoenixcontact.net/qr/2891104/firmware_update
www.phoenixcontact.net/qr/2891119/firmware_update
www.phoenixcontact.net/qr/2891120/firmware_update
www.phoenixcontact.net/qr/2891160/firmware_update
www.phoenixcontact.net/qr/2891161/firmware_update
www.phoenixcontact.net/qr/2891162/firmware_update
cwe.mitre.org/data/definitions/200.html
cwe.mitre.org/data/definitions/285.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=PHOENIX%20CONTACT%20FL%20SWITCH+https://www.cisa.gov/news-events/ics-advisories/icsa-18-011-03
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-18-011-03&title=PHOENIX%20CONTACT%20FL%20SWITCH
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:L/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-18-011-03
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-18-011-03
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=PHOENIX%20CONTACT%20FL%20SWITCH&body=www.cisa.gov/news-events/ics-advisories/icsa-18-011-03
10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.005 Low
EPSS
Percentile
76.4%