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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.4211 Advisory (icsma-19-311-02) Medtronic Valleylab FT10 and FX8 8 November 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Medtronic Valleylab FT10 and FX8 Publisher: ICS-CERT Operating System: Windows Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Access Confidential Data -- Remote/Unauthenticated Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-13543 CVE-2019-13539 CVE-2019-3464 CVE-2019-3463 Reference: ESB-2019.1253 ESB-2019.0306 Original Bulletin: https://www.us-cert.gov/ics/advisories/icsma-19-311-02 - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Medical Advisory (ICSMA-19-311-02) Medtronic Valleylab FT10 and FX8 Original release date: November 07, 2019 Legal Notice All information products included in http://ics-cert.us-cert.gov are provided"as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see http://www.us-cert.gov/tlp/ . 1. EXECUTIVE SUMMARY o CVSS v3 9.8 o ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: Medtronic o Equipment: Valleylab FT10, Valleylab FX8 o Vulnerabilities: Use of Hard-coded Credentials, Reversible One-way Hash, Improper Input Validation 2. RISK EVALUATION Successful exploitation of these vulnerabilities may allow an attacker to overwrite files or remotely execute code, resulting in a remote, non-root shell on the affected products. By default, the network connections on these devices are disabled. Additionally, the Ethernet port is disabled upon reboot. However, it is known that network connectivity is often enabled. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following Medtronic Valleylab products, are affected: o Valleylab Exchange Client, Version 3.4 and below o Valleylab FT10 Energy Platform (VLFT10GEN) software Version 4.0.0 and below o Valleylab FX8 Energy Platform (VLFX8GEN) software Version 1.1.0 and below 3.2 VULNERABILITY OVERVIEW 3.2.1 USE OF HARD-CODED CREDENTIALS CWE-798 The affected products use multiple sets of hard-coded credentials. If discovered, they can be used to read files on the device. CVE-2019-13543 has been assigned to this vulnerability. A CVSS v3 base score of 5.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:C/ C:L/I:N/A:N ). 3.2.2 REVERSIBLE ONE-WAY HASH CWE-328 The affected products use the descrypt algorithm for OS password hashing. While interactive, network-based logons are disabled, and attackers can use the other vulnerabilities within this report to obtain local shell access and access these hashes. CVE-2019-13539 has been assigned to this vulnerability. A CVSS v3 base score of 7.0 has been calculated; the CVSS vector string is ( AV:L/AC:H/PR:L/UI:N/S:U/ C:H/I:H/A:H ). 3.2.3 IMPROPER INPUT VALIDATION CWE-20 The affected products use a vulnerable version of the rssh utility in order to facilitate file uploads. This could provide an attacker with administrative access to files or the ability to execute arbitrary code. CVE-2019-3464 , and CVE-2019-3463 have been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is ( AV:N /AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Ireland 3.4 RESEARCHER Medtronic reported these vulnerabilities to CISA. 4. MITIGATIONS Software patches are currently available for the FT10 platform and will be available in early 2020 for the FX8 platform. Until these updates can be applied, Medtronic recommends to either disconnect affected products from IP networks or to segregate those networks, such that the devices are not accessible from an untrusted network (e.g., Internet). Patches can be downloaded at the following location: https://www.medtronic.com/covidien/en-us/support/software.html Medtronic has released additional patient focused information, at the following location: https://www.medtronic.com/security CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: o Minimize network exposure for all medical devices and/or systems. o Locate medical devices behind firewalls and isolate them where possible. o Restrict system access to authorized personnel only and follow a least privilege approach. o Apply defense-in-depth strategies. o Disable any unnecessary accounts, protocols and services. o Where additional information is needed, refer to existing cybersecurity in medical device guidance issued by the FDA at the following location: https: //www.fda.gov/medical-devices/digital-health/cybersecurity CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.gov . Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies . Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies . Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents. No known public exploits specifically target these vulnerabilities. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXcSvQ2aOgq3Tt24GAQgorQ//VPP3QkN5rSCSdJxtjdsDZMX4hW9IYzNG NaTZT4iKpFnnYed6qBIA7AJbc6K+ily0Znq185SxjfoDFiGeRz9gQhcnjBzqvwZg glszNs0sdT1/OUcbVMOtBjme0skMCtDYSE7va3NfgrMo5EAQ7HrPoDcZbU+a/lXQ T9TlNuGrH+VSY2xNFueMWRKfQqgVXaZqr6pbGgUHnCYHWvrKPQ6U8TSMzZxo9o/8 ILgbu4e2vBbEOcJx6WuN76kN27eWV0j0dLVI0rOG1QbfFcCj/Xdx0vRkqdfPhB9U PfVMA+Wz3DW+bQtJBnVM4NZbi2LL2sPprBKKVT9qZV128ElNpCVDrsO0W7A9J6pg S/rG9xzGrBLRMY0wmpFgLNOn2vXNDXgKeuYY6FzpQNuEkCM5BP5AQeU0X+L9Hnuz H8y+M5SXi3c+O5Crs9DTILpqIFh4G/bm+YKiVhwoAQ8pHkYmkNst43k9ojGeFzeO WvWfxzPQqlj+m9ltpNfwVmbpuBeqSRcfOIxRwGHs6Ufqs+ju/BYTB+8sIdylvedD CqV87aiyvS5nYvFiW+itxc/blrSWmbOqVdtqDsT9g2a2d7d1QuEHB7gZWpoVmso6 yCNH9AHrndROb0Yj0CRgy4Oj9Y3zhx3W/8IPn6BxKV4O5eAJ2pjf1ElkuCVb6s7k +Ns/bPMZ1m0= =RJpZ -----END PGP SIGNATURE-----