Denial of Service Vulnerability in Siemens Devices Due to Improper Packet Handling
CVE-2021-44693

4.9MEDIUM

Key Information:

Vendor

Siemens
Status
Simatic Drive Controller Cpu 1504d Tf
Simatic Drive Controller Cpu 1507d Tf
Simatic Et 200sp Open Controller Cpu 1515sp Pc2 (incl. Siplus Variants)
Simatic S7-1200 Cpu Family (incl. Siplus Variants)
Vendor
CVE Published:
13 December 2022

What is CVE-2021-44693?

Certain Siemens devices fail to correctly handle specially crafted packets directed at port 102/tcp. This flaw can be exploited by an attacker to disrupt normal operations, leading to a denial of service condition. Organizations using affected Siemens products should review their network configurations and apply recommended mitigations to safeguard against potential exploitation.

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Affected Version(s)

SIMATIC Drive Controller CPU 1504D TF All versions < V2.9.7

SIMATIC Drive Controller CPU 1507D TF All versions < V2.9.7

SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) All versions < V21.9.7

References

https://cert-portal.siemens.com/productcert/pdf/ssa-38265...

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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