Denial of Service Vulnerability in Phoenix Contact FL SWITCH SMCS series products

5.3 CVSS

Vulnerability Description

In Phoenix Contact FL SWITCH SMCS series products in multiple versions fragmented TCP-Packets may cause a Denial of Service of Web-, SNMP- and ICMP-Echo services. The switching functionality of the device is not affected.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

This vulnerability has been discovered and reported by Anne Borcherding, Fraunhofer- Institut für Optronik, Systemtechnik und Bildauswertung IOSB. PHOENIX CONTACT thanks CERT@VDE for the coordination and support with this publication.

References

https://cert.vde.com/en-us/advisories/vde-2021-023

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Affected Vendor

Phoenix Contact

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Affected Software

FL SWITCH, FL NAT

Vulnerable Versions:

SMCS 16TX (2700996), SMCS 14TX/2FX (2700997), SMCS 14TX/2FX-SM (2701466), SMCS 8GT (2891123), SMCS 6GT/2SFP (2891479), SMCS 8TX-PN (2989103), SMCS 4TX-PN (2989093), SMCS 8TX (2989226), SMCS 6TX/2SFP (2989323), SMN 6TX/2POF-PN (2700290), SMN 8TX-PN (2989501), SMN 6TX/2FX (2989543), SMN 6TX/2FX SM (2989556), SMN 8TX (2989365), SMN 8TX-M (2702443)