ICSA-19-344-03: Siemens RUGGEDCOM ROS (Update A)

CISA's summary

Summary: The boot loader within RUGGEDCOM ROS contains two vulnerabilities in the loading process of the operating system kernel. The more severe of these vulnerabilities could allow an attacker with local access to the device to execute arbitrary code on an affected device. Siemens recommends specific countermeasures to mitigate this issue.

Products, as the advisory lists them

DeSpy has not checked any unit, hardware revision or firmware.

Vulnerabilities in this advisory

• CVE-2018-18440 — CVE-2018-18440 · CWE-119

  The embedded DENX U-Boot boot loader has a locally exploitable buffer overflow via a crafted kernel image because filesystem loading is mishandled. The security vulnerability could be exploited by an attacker with local access to the affected systems. The vulnerability could allow an attacker to compromise confidentiality, integrity and availability of the system. At the time of advisory publication no public exploitation of this security vulnerability was known.

• CVE-2019-13103 — CVE-2019-13103 · CWE-674

  The embedded DENX U-Boot boot loader has a physically exploitable vulnerability. A crafted self-referential DOS partition table will cause the bootloader to infinitely recurse, causing the stack to grow infinitely and eventually crash. The security vulnerability could be exploited by an attacker with physical access to the affected systems. The vulnerability could allow an attacker to compromise the availability of the system. At the time of advisory publication no public exploitation of this security vulnerability was known.

Acknowledgments, as the advisory lists them

• Siemens ProductCERT: reporting these vulnerabilities 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

• The advisory at cisa.gov
• The CSAF document (JSON)

DeSpy's copy of this version is dated 2026-09-28.