ICSA-18-226-02: Siemens OpenSSL Vulnerability in Industrial Products (Update E)
CISA advisory · released 2018-08-07
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 8, 2022-09-13 (final)
CISA's summary
Summary: Several Siemens industrial products are affected by a vulnerability in OpenSSL, that could result in data being sent out unencrypted by the SSL/TLS record layer. Siemens has released updates for the affected products and recommends to update to the latest versions.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | MindConnect IoT2040 | <V03.01 |
| Siemens | MindConnect Nano (IPC227D) | <V03.01 |
| Siemens | SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) | >=V2.0_<V2.1.6 |
| Siemens | SIMATIC HMI WinCC Flexible | <V15.1 |
| Siemens | SIMATIC IPC DiagBase | <V2.1.1.0 |
| Siemens | SIMATIC IPC DiagMonitor | <V5.0.3 |
| Siemens | SIMATIC S7-1200 CPU family (incl. SIPLUS variants) | <V4.2.3 |
| Siemens | SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) | <V2.5.2 |
| Siemens | SIMATIC S7-1500 Software Controller | >=V2.0_and_<V2.6 |
| Siemens | SIMATIC STEP 7 (TIA Portal) V13 | <V13_SP2_Update_2 |
| Siemens | SIMATIC STEP 7 (TIA Portal) V14 | <V14_SP1_Update_6 |
| Siemens | SIMATIC STEP 7 (TIA Portal) V15 | <V15_Update_2 |
| Siemens | SIMATIC WinCC (TIA Portal) V13 | <V13_SP2_Update_2 |
| Siemens | SIMATIC WinCC (TIA Portal) V14 | <V14_SP1_Upd_6 |
| Siemens | SIMATIC WinCC (TIA Portal) V15 | <V15_Update_2 |
| Siemens | SIMATIC WinCC OA V3.14 | <V3.14_P021 |
| Siemens | SIMATIC WinCC OA V3.15 | <V3.15_P014 |
| Siemens | SIMATIC WinCC OA V3.16 | <V3.16_P002 |
| Siemens | SINUMERIK Integrate Access MyMachine service engineer client as part of Sinumerik Integrate Product suite | <V4.1.8 |
| Siemens | SINUMERIK Integrate Operate Client as part of Sinumerik Integrate Product suite | <=2.0.11_/_3.0.11 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2017-3737 — CVE-2017-3737 · CWE-319
In OpenSSL 1.0.2 an "error state" mechanism was introduced. This "error state" mechanism does not work correctly if SSL_read() or SSL_write() is called directly by an application. This could result in data being sent out unencrypted by the SSL/TLS record layer. Successful exploitation requires an attacker to cause a fatal error in the victim's SSL/TLS handshake algorithm, and that the targeted application calls SSL_read() or SSL_write() after having already received a fatal error. No user interaction or privileges are required to exploit this security vulnerability. The vulnerability could allow to compromise confidentiality of data by transmitting it unencrypted over the network.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting this vulnerability to CISA.
- Artem Zinenko, Kaspersky: pointing out that SIPLUS should also be mentioned
The advisory's legal notice
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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