CVE-2021-40368

Published on: Not Yet Published

Last Modified on: 08/10/2022 08:27:00 PM UTC

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Certain versions of Simatic S7-400h V6 from Siemens contain the following vulnerability:

A vulnerability has been identified in SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.10), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), 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). 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.

  • CVE-2021-40368 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.
  • Affected Vendor/Software: URL Logo Siemens - SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) version All versions < V6.0.10
  • Affected Vendor/Software: URL Logo Siemens - SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) version All versions
  • Affected Vendor/Software: URL Logo Siemens - SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) version All versions < V10.1
  • Affected Vendor/Software: URL Logo Siemens - SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) version All versions < V8.2.3

CVSS3 Score: 7.5 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE NONE HIGH

CVSS2 Score: 5 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE NONE PARTIAL

CVE References

Description Tags Link
cert-portal.siemens.com
application/pdf
URL Logo MISC cert-portal.siemens.com/productcert/pdf/ssa-557541.pdf

Related QID Numbers

  • 590853 Siemens SIMATIC S7-400 Vulnerability (icsa-22-104-12) (ssa-557541)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
HardwareSiemensSimatic S7-400h V6-AllAllAll
Operating
System
SiemensSimatic S7-400h V6 FirmwareAllAllAllAll
HardwareSiemensSimatic S7-400 Pn/dp V7-AllAllAll
Operating
System
SiemensSimatic S7-400 Pn/dp V7 FirmwareAllAllAllAll
HardwareSiemensSimatic S7-410 V10-AllAllAll
Operating
System
SiemensSimatic S7-410 V10 FirmwareAllAllAllAll
HardwareSiemensSimatic S7-410 V8-AllAllAll
Operating
System
SiemensSimatic S7-410 V8 FirmwareAllAllAllAll
  • cpe:2.3:h:siemens:simatic_s7-400h_v6:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:siemens:simatic_s7-400h_v6_firmware:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:siemens:simatic_s7-400_pn\/dp_v7:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:siemens:simatic_s7-400_pn\/dp_v7_firmware:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:siemens:simatic_s7-410_v10:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:siemens:simatic_s7-410_v10_firmware:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:siemens:simatic_s7-410_v8:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:siemens:simatic_s7-410_v8_firmware:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-40368 : A vulnerability has been identified in SIMATIC S7-400 H V6 CPU family incl. SIPLUS variants All… twitter.com/i/web/status/1… 2022-04-12 09:20:35
Reddit Logo Icon /r/netcve CVE-2021-40368 2022-04-12 10:38:59
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