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05/2021 SpaceCom, Battery Pack SP with WiFi, Data module compactplus - multiple vulnerabilities

Vulnerability Advisory

1       Executive Summary

CVSS v3:  9.7

ATTENTION: Exploitable remotely/ high skill level to exploit

Vendor: B. Braun Melsungen AG

Equipment: Perfusor® Space, Infusomat® Space, Infusomat® Space P, SpaceCom, Battery Pack SP with WiFi; Perfusor® compactplus, Infusomat® compactplus, Infusomat® P compactplus, Data module compactplus

Vulnerabilities: Insufficient Verification of Data Authenticity, Missing Authentication for Critical Function, Cleartext Transmission of Sensitive Information, Unrestricted Upload of File with Dangerous Type

2       Risk Evaluation

Successful exploitation of these vulnerabilities could allow a sophisticated attacker to compromise the security of the Space or compactplus communication devices, allowing an attacker to escalate privileges, view sensitive information, upload arbitrary files, and perform remote code execution.

Under certain conditions, successful exploitation of these vulnerabilities could allow an attacker to change the configuration of a connected infusion pump Perfusor®, Infusomat®, Infusomat® P from both Space and compactplus family which may alter infusions after a successful attack.

These conditions include all of the following: (i) the pumps are connected to a network, (ii) the attacker has access to this network, (iii) the attacker targets the specific device with this specific attack, (iv) the infusion pump is not delivering a therapy (it is “Turned Off” or in “Standby Mode”).

Change of a running therapy is not possible.

B. Braun has received no reports of exploitation or incidents associated with these vulnerabilities in an actual use environment.

3       Technical Details

3.1     Affected Products

The following versions of B. Braun products are affected:

  • SpaceCom, software versions L81 and earlier
  • Battery pack with WiFi, software versions L81 and earlier
  • Data module compactplus, software versions A10 and A11

Other devices of B. Braun are not affected.

For devices marketed in the United States (software versions ‘U’), a separate advisory is available.

 

3.2     Vulnerability Overview

Note that the vulnerabilities identified rely on other vulnerabilities within Software versions L81/A11 (and earlier) which have been previously disclosed in October 2020.

3.2.1     CWE-345: Insufficient Verification of Data Authenticity

Insufficient verification of data authority may allow an attacker to upload specific files to the Com devices. Unrecognized files may reset the device to service mode. An upload cannot be done while a therapy is running. Only devices turned off or in standby mode maybe affected.

A CVSS v3.1 score of 9.7 has been calculated, the CVSS vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N /S:C/C:H/I:H/A:N/CR:H/IR:H/AR:M/MAV:A.

3.2.2     CWE-306: Missing Authentication for Critical Function: Network commands require no authentication

Missing authentication may allow an attacker to upload specific files to the Com devices. Unrecognized files may reset the device to service mode. An upload cannot be done while a therapy is running. A remote change of infusion rates is not possible. Only devices turned off or in standby mode maybe affected.

A CVSS v3.1 score of 8.2 has been calculated, the CVSS vector string is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:C/C:N/I:H/A:N/CR:H/IR:H/AR:M/MAV:A.

3.2.3     CWE-319: Cleartext Transmission of Sensitive Information: Network commands are sent in plaintext

Missing encryption may allow an attacker to record data in transmission. An attacker may also send specific network commands to upload files to the Com devices. Unrecognized files may reset the device to service mode. An upload cannot be done while a therapy is running. A remote change of infusion rates is not possible. Only devices turned off or in standby mode maybe affected. These issues do not affect the infusion pump at all.

A CVSS v3.1 score of 7.1 has been calculated, the CVSS vector string is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:N/I:H/A:N/CR:H/IR:H/AR:M/MAV:A

3.2.4     CWE-434: Unrestricted Upload of File with Dangerous Type

By using the vulnerability, an attacker may upload arbitrary files to the system. This may be used to change the communication device behavior including its availability on the network, but not the availability or integrity of the connected pumps.

A CVSS v3.1 score of 5.4 has been calculated, the CVSS vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:L/I:L/A:N/CR:M/IR:M/AR:L/MAV:A.

3.3     Background

Critical Infrastructure Sectors: Healthcare and Public Health

Countries/Areas Deployed: Worldwide (except USA)

Company Headquarters Location: Germany

3.4     Researcher

McAfee Advanced Threat Research (ATR)

4       Mitigations

B. Braun recommends:

DEVICE RECOMMENDATIONS

Always use the latest updates:

  • SpaceCom: L82 or later
  • Battery Pack SP with WiFi:L82 or later
  • DataModule compactplus: version A12 or later

NETWORK RECOMMENDATIONS

All facilities utilizing SpaceCom, Battery Pack SP with WiFi, and DataModule compactplus should review their IT infrastructure to ensure that a network zone concept has been implemented whereby critical systems, such as infusion pumps, are housed in separate (e.g., by firewalls or VLAN) environments which are not accessible directly from the internet or by unauthorized users. 

Wireless networks should be implemented using multi-factor authentication and industry standard encryption and should be equipped with Intrusion Detection Systems (IDS) and/or Intrusion Prevention Systems (IPS).

Note: In some instances, standard IT security measures (e.g., blocking of ports) may limit the administrative functions of the product, but will not impact the therapy related functions of the device.  Where it is necessary to reduce security measures to perform an administrative function, such actions should be temporary in nature, and the recommendations identified above reinstituted immediately upon successful completion of the function.

The B. Braun advisory is available at bbraun.com/productsecurity. Please contact your local B. Braun organization to request further help.

5       Contact information

If you have any additional information regarding the security of our products, please contact your local B. Braun representative or directly productsecurity@bbraun.com.

If you are a B. Braun customer and need support in mitigating the above-mentioned vulnerabilities, contact your local B. Braun representative.