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CVE-2021-33737

Published: Sep 14, 2021Updated: Nov 21, 2024 Sources: CVE List NVD csafCWE-119
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.0%
Top 41.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A vulnerability has been identified in SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 ERPC (All versions), SIMATIC CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3). Sending a specially crafted packet to port 102/tcp of an affected device could cause a denial of service condition. A restart 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
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Weaknesses

CWE-119

Affected Products

SIMATIC CP 343-1 (incl. SIPLUS variants)SiemensICS / OT / IoT
SIMATIC CP 343-1 Advanced (incl. SIPLUS variants)SiemensICS / OT / IoT
SIMATIC CP 343-1 ERPCSiemensICS / OT / IoT
SIMATIC CP 343-1 Lean (incl. SIPLUS variants)SiemensICS / OT / IoT
SIMATIC CP 443-1SiemensICS / OT / IoT
siemenscommercialDEEnterprise Softwareaka siemens ag
and 9 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/csaf/ssa-549234.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-549234.html
cert-portal.siemens.com
and 9 more references View all →

Timeline

Published
Sep 14, 2021
Last Updated
Nov 21, 2024

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