ICSA-21-131-03: Siemens Linux-based Products (Update J)
CISA advisory · released 2021-05-11
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 11, 2023-03-14 (final)
CISA's summary
Summary: A vulnerability made public under the name SAD DNS affects Domain Name System resolvers due to a vulnerability in the Linux kernel when handling ICMP packets. The Siemens products which are affected are listed below. For more information please see https://www.saddns.net/. 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 | RUGGEDCOM RM1224 family (6GK6108-4AM00) | >=V5.0_and_<V6.4 |
| Siemens | SCALANCE M-800 family | >=V5.0_and_<V6.4 |
| Siemens | SCALANCE S615 (6GK5615-0AA00-2AA2) | >=V5.0_and_<V6.4 |
| Siemens | SCALANCE SC-600 family | <V2.1.3 |
| Siemens | SCALANCE W1750D | 8.3.0.1|8.6.0|8.7.0 |
| Siemens | SIMATIC Cloud Connect 7 CC712 (6GK1411-1AC00) | <>_V1.0_and_V1.6 |
| Siemens | SIMATIC Cloud Connect 7 CC716 (6GK1411-5AC00) | <>_V1.0_and_V1.6 |
| Siemens | SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0) | >=V3.1.39_<V3.3 |
| Siemens | SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0) | >=V3.1.39_and_<V3.3.46 |
| Siemens | SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0) | >=V3.1.39_and_<V3.3 |
| Siemens | SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0) | >=V3.1.39_and_<V3.3 |
| Siemens | SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0) | >=V3.1.39_and_<V3.3.46 |
| Siemens | SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0) | >=V2.0_<V2.2.28 |
| Siemens | SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0) | >=V2.0_<V2.2.28 |
| Siemens | SIMATIC CP 1543-1 (incl. SIPLUS variants) | >=V2.2_and_<V3.0 |
| Siemens | SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) | >=V2.0_<V2.2.28 |
| Siemens | SIMATIC CP 1545-1 (6GK7545-1GX00-0XE0) | <V1.1 |
| Siemens | SIMATIC MV540 H (6GF3540-0GE10) | <V3.1 |
| Siemens | SIMATIC MV540 S (6GF3540-0CD10) | <V3.1 |
| Siemens | SIMATIC MV550 H (6GF3550-0GE10) | <V3.1 |
| Siemens | SIMATIC MV550 S (6GF3550-0CD10) | <V3.1 |
| Siemens | SIMATIC MV560 U (6GF3560-0LE10) | <V3.1 |
| Siemens | SIMATIC MV560 X (6GF3560-0HE10) | <V3.1 |
| Siemens | SINEMA Remote Connect Server | <V3.0_SP1 |
| Siemens | SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0) | >=V2.0_<V2.2.28 |
| Siemens | SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0) | >=V2.0_<V2.2.28 |
| Siemens | SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0) | >=V2.0_<V2.2.28 |
| Siemens | SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0) | >=V3.1.39_<V3.3 |
| Siemens | SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0) | >=V3.1.39_and_<V3.3.46 |
| Siemens | SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0) | >=V3.1.39_and_<V3.3.46 |
| Siemens | SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) | <V2.2_Update_1 |
| Siemens | TIM 1531 IRC (6GK7543-1MX00-0XE0) | <V2.2_Update_1 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2020-25705 — CVE-2020-25705 · CWE-330
A flaw in ICMP packets in the Linux kernel was found to allow to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass source port UDP randomization. Software that relies on UDP source port randomization are indirectly affected as well. Kernel versions before 5.10 may be vulnerable to this issue.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting this vulnerability to CISA.
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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