7.8

CVE-2021-21005

Race Condition Vulnerability in Phoenix Contact FL SWITCH SMCS series products

In Phoenix Contact FL SWITCH SMCS series products in multiple versions if an attacker sends a hand-crafted TCP-Packet with the Urgent-Flag set and the Urgent-Pointer set to 0, the network stack will crash. The device needs to be rebooted afterwards.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Phoenixcontact ≫ Fl Nat Smn 8tx Firmware Version <= 4.63
   Phoenixcontact ≫ Fl Nat Smn 8tx Version -
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.68% 0.474
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NIST 7.8 10 6.9
AV:N/AC:L/Au:N/C:N/I:N/A:C
info@cert.vde.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

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