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CVE-2021-37185

Published: Feb 9, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-672
NVD MITRE
7.5CVSSHIGH
EPSS Score
2.0%
Top 21.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V21.9 < V21.9.4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions >= V4.5.0 < V4.5.2), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.9.2 < V2.9.4), SIMATIC S7-1500 Software Controller (All versions >= V21.9 < V21.9.4), SIMATIC S7-PLCSIM Advanced (All versions >= V4.0 < V4.0 SP1), SIPLUS TIM 1531 IRC (All versions < V2.3.6), TIM 1531 IRC (All versions < V2.3.6). An unauthenticated attacker could cause a denial-of-service condition in a PLC when sending specially prepared packets over port 102/tcp. A restart of the affected device is needed to restore normal operations.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-672NVD-CWE-noinfo

Affected Products

SIMATIC S7-1500 Software ControllerSiemens AG
On-prem
ICS / OT / IoT / industrial-network
SIMATIC ET 200 SP Open Controller CPU 1515SP PC2Siemens AG
On-prem
Enterprise Software / collaboration-groupware
SIMATIC S7-PLCSIM AdvancedSiemens AG
On-prem
Enterprise Software / collaboration-groupware
SIMATIC S7-1200Siemens AG
On-prem
Enterprise Software / collaboration-groupware
SIMATIC S7-1500 CPU familySiemens AG
On-prem
Enterprise Software / collaboration-groupware
siemens agcommercialDEEnterprise Softwareaka siemens
and 58 more affected products View all →

Exploitability

Official Patch Available

References

https://cert-portal.siemens.com/productcert/pdf/ssa-838121.pdf&#13;
cert-portal.siemens.com
https://www.cybersecurity-help.cz/vdb/SB2022021105&#13;
cybersecurity-help.cz
https://www.cisa.gov/uscert/ics/advisories/icsa-22-041-01
cisa.gov
and 12 more references View all →

Timeline

Published
Feb 9, 2022
Last Updated
Nov 21, 2024

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