Siemens Fixing Molecular Imaging XP Holes

Thursday, August 3, 2017 @ 05:08 PM gHale


Siemens found two vulnerabilities in its molecular imaging products running on Windows XP and the company is preparing updates for the affected products, according to a report with ICS-CERT.

Successful exploitation of these remotely exploitable vulnerabilities may allow the attacker to remotely execute arbitrary code.

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Siemens said the vulnerability affects the following products:
• Siemens PET/CT Systems: All Windows XP-based versions
• Siemens SPECT/CT Systems: All Windows XP-based versions
• Siemens SPECT Systems: All Windows XP-based versions
• Siemens SPECT Workplaces/Symbia.net: All Windows XP-based versions

The affected products, select molecular imaging products, are used in medical imaging.

Molecular imaging products see action across the healthcare and public health sector. Siemens estimates that these products are used worldwide.

In one vulnerability, an unauthenticated remote attacker could execute arbitrary code via a specially crafted remote procedure call (RPC) request sent to the server service of affected Microsoft Windows systems.

CVE-2008-4250 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 9.8.

In addition, an unauthenticated remote attacker could execute arbitrary code with the permissions of the web server by sending a specially crafted HTTP request to the WebDAV service.

CVE-2017-7269 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 9.8.

No known public exploits specifically target these vulnerabilities. However, an attacker with a low skill would be able to exploit these vulnerabilities.

Munich, Germany-based Siemens is preparing updates for the affected products and recommends protecting network access to the molecular imaging products with appropriate mechanisms.

It is advised to run the devices in a dedicated network segment and protected IT environment. If this is not possible, Siemens recommends the following:
• If patient safety and treatment is not at risk, disconnect the product from the network and use in standalone mode.
• Reconnect the product only after the provided patch or remediation is installed on the system. Siemens is able to patch systems capable of Remote Update Handling (RUH) much faster by remote software distribution compared to onsite visits. Therefore, users of RUH-capable equipment are recommended to clarify the situation concerning patch availability and remaining risk in the local customer network with the Siemens Customer Care Center first and then to reconnect the systems in order to receive patches as quickly as possible via RUH. This ensures smooth and fast receipt of updates and therefore supports reestablishment of system operations.

In addition, Siemens recommends:
• Ensure users have appropriate backups and system restoration procedures
• For specific patch and remediation guidance information contact a local Siemens customer service engineer or a Siemens regional support center

For more information on these vulnerabilities and more detailed mitigation instructions, please see Siemens Security Advisory SSA-814457.



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