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CVE Vulnerability Details :
CVE-2021-21003
PUBLISHED
More InfoOfficial Page
Assigner-CERTVDE
Assigner Org ID-270ccfa6-a436-4e77-922e-914ec3a9685c
View Known Exploited Vulnerability (KEV) details
Published At-25 Jun, 2021 | 18:25
Updated At-17 Sep, 2024 | 01:31
Rejected At-
▼CVE Numbering Authority (CNA)
Denial of Service Vulnerability in Phoenix Contact FL SWITCH SMCS series products

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.

Affected Products
Vendor
Phoenix Contact GmbH & Co. KGPhoenix Contact
Product
FL SWITCH
Versions
Affected
  • From SMCS 16TX (2700996) through 4.70 (custom)
  • From SMCS 14TX/2FX (2700997) through 4.70 (custom)
  • From SMCS 14TX/2FX-SM (2701466) through 4.70 (custom)
  • From SMCS 8GT (2891123) through 4.70 (custom)
  • From SMCS 6GT/2SFP (2891479) through 4.70 (custom)
  • From SMCS 8TX-PN (2989103) through 4.70 (custom)
  • From SMCS 4TX-PN (2989093) through 4.70 (custom)
  • From SMCS 8TX (2989226) through 4.70 (custom)
  • From SMCS 6TX/2SFP (2989323) through 4.70 (custom)
  • From SMN 6TX/2POF-PN (2700290) through 4.70 (custom)
  • From SMN 8TX-PN (2989501) through 4.70 (custom)
  • From SMN 6TX/2FX (2989543) through 4.70 (custom)
  • From SMN 6TX/2FX SM (2989556) through 4.70 (custom)
Vendor
Phoenix Contact GmbH & Co. KGPhoenix Contact
Product
FL NAT
Versions
Affected
  • From SMN 8TX (2989365) through 4.63 (custom)
  • From SMN 8TX-M (2702443) through 4.63 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-404CWE-404 Improper Resource Shutdown or Release
Type: CWE
CWE ID: CWE-404
Description: CWE-404 Improper Resource Shutdown or Release
Metrics
VersionBase scoreBase severityVector
3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds

Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to the Phoenix Contact application note: Measures to protect network-capable devices with Ethernet connection https://dam-mdc.phoenixcontact.com/asset/156443151564/0a870ae433c19148b80bd760f3a1c1f2/107913_en_03.pdf

Exploits
Credits
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.
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://cert.vde.com/en-us/advisories/vde-2021-023
x_refsource_CONFIRM
Hyperlink: https://cert.vde.com/en-us/advisories/vde-2021-023
Resource:
x_refsource_CONFIRM
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://cert.vde.com/en-us/advisories/vde-2021-023
x_refsource_CONFIRM
x_transferred
Hyperlink: https://cert.vde.com/en-us/advisories/vde-2021-023
Resource:
x_refsource_CONFIRM
x_transferred
Details not found