CVE-2021-33737 Information

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

CVSS Vector

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

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5