CVE Vulnerability

CVE-2021-33737

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 (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 Advanced (All versions), SIMATIC CP 443-1 Advanced (incl. SIPLUS variants) (All versions), SIPLUS NET CP 443-1 Advanced (All versions). 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.

7.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf Patch Vendor Advisory
Configurations

Configuration 1
Information

Published : 2021-09-14 11:15

Updated : 2022-06-14 10:15

NVD link : CVE-2021-33737

Mitre link : CVE-2021-33737

Products Affected

Siemens

Simatic Cp343-1 Advanced

CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer