// For flags

CVE-2021-40368

 

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-2 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-2 DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions < V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions < V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Affected devices improperly handle specially crafted packets sent to port 102/tcp.

This could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations.

Se ha identificado una vulnerabilidad en la familia de CPUs SIMATIC S7-400 H V6 (incluidas las variantes SIPLUS) (todas las versiones anteriores a V6.0.10), la familia de CPUs SIMATIC S7-400 PN/DP V7 (incluidas las variantes SIPLUS) (todas las versiones), la familia de CPUs SIMATIC S7-410 V10 (incluidas las variantes SIPLUS) (todas las versiones anteriores a V10.1) y la familia de CPUs SIMATIC S7-410 V8 (incluidas las variantes SIPLUS) (todas las versiones anteriores a V8.2.3). Los dispositivos afectados manejan incorrectamente paquetes especialmente diseñados enviados al puerto 102/tcp. Esto podría permitir a un atacante crear una condición de denegación de servicio. Se necesita un reinicio para restaurar las operaciones normales

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-09-01 CVE Reserved
  • 2022-04-12 CVE Published
  • 2023-11-03 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
https://cert-portal.siemens.com/productcert/pdf/ssa-557541.pdf 2023-04-11
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Siemens
Search vendor "Siemens"
 Simatic S7-400h V6 Firmware
Search vendor "Siemens" for product "Simatic S7-400h V6 Firmware"
 < 6.0.10
Search vendor "Siemens" for product "Simatic S7-400h V6 Firmware" and version " < 6.0.10"
-
Affected
in Siemens
Search vendor "Siemens"
 Simatic S7-400h V6
Search vendor "Siemens" for product "Simatic S7-400h V6"
--
Safe
Siemens
Search vendor "Siemens"
 Simatic S7-400 Pn\/dp V7 Firmware
Search vendor "Siemens" for product "Simatic S7-400 Pn\/dp V7 Firmware"
*-
Affected
in Siemens
Search vendor "Siemens"
 Simatic S7-400 Pn\/dp V7
Search vendor "Siemens" for product "Simatic S7-400 Pn\/dp V7"
--
Safe
Siemens
Search vendor "Siemens"
 Simatic S7-410 V8 Firmware
Search vendor "Siemens" for product "Simatic S7-410 V8 Firmware"
*-
Affected
in Siemens
Search vendor "Siemens"
 Simatic S7-410 V8
Search vendor "Siemens" for product "Simatic S7-410 V8"
--
Safe
Siemens
Search vendor "Siemens"
 Simatic S7-410 V10 Firmware
Search vendor "Siemens" for product "Simatic S7-410 V10 Firmware"
 < 10.1
Search vendor "Siemens" for product "Simatic S7-410 V10 Firmware" and version " < 10.1"
-
Affected
in Siemens
Search vendor "Siemens"
 Simatic S7-410 V10
Search vendor "Siemens" for product "Simatic S7-410 V10"
--
Safe