CVE-2021-33737: Buffer Overflow
First published: Tue Sep 14 2021(Updated: )
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.
Credit: productcert@siemens.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Siemens Simatic Cp 343-1 Firmware | ||
| Siemens Simatic Cp343-1 | ||
| Siemens Simatic Cp 343-1 Advanced Firmware | ||
| Siemens Simatic Cp343-1 Advanced | ||
| Siemens Simatic Cp 343-1 Erpc Firmware | ||
| Siemens Simatic Cp 343-1 Erpc | ||
| Siemens Simatic Cp 343-1 Lean Firmware | ||
| Siemens Simatic Cp 343-1 Lean | ||
| Siemens Simatic Cp 443-1 Firmware | ||
| Siemens Simatic Cp 443-1 | ||
| Siemens Simatic Cp 443-1 Advanced Firmware | ||
| Siemens Simatic Cp 443-1 Advanced |
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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.
- collector/nvd-index
- agent/severity
- agent/weakness
- agent/references
- agent/author
- agent/type
- agent/event
- agent/description
- agent/remedy
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/siemens
- canonical/siemens simatic cp 343-1 firmware
- canonical/siemens simatic cp343-1
- canonical/siemens simatic cp 343-1 advanced firmware
- canonical/siemens simatic cp343-1 advanced
- canonical/siemens simatic cp 343-1 erpc firmware
- canonical/siemens simatic cp 343-1 erpc
- canonical/siemens simatic cp 343-1 lean firmware
- canonical/siemens simatic cp 343-1 lean
- canonical/siemens simatic cp 443-1 firmware
- canonical/siemens simatic cp 443-1
- canonical/siemens simatic cp 443-1 advanced firmware
- canonical/siemens simatic cp 443-1 advanced