CVE-2021-33737: Buffer Overflow
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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2021-33737?
The severity of CVE-2021-33737 is high with a severity value of 7.5.
What is affected by CVE-2021-33737?
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) are affected by CVE-2021-33737.
Is Siemens Simatic Cp343-1 vulnerable to CVE-2021-33737?
No, Siemens Simatic Cp343-1 is not vulnerable to CVE-2021-33737.
How can I fix CVE-2021-33737?
Apply the necessary patches or updates provided by Siemens to fix CVE-2021-33737.
Where can I find more information about CVE-2021-33737?
You can find more information about CVE-2021-33737 in the Siemens Product CERT advisory at https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf.