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Rapid7 Flags A number of Flaws in Sigma Spectrum Infusion Pumps

By Ionut Arghire on September 08, 2022

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Safety researchers at Rapid7 are warning about a number of secuirty vulnerabilities impacting Baxter’s Sigma Spectrum infusion pumps, together with points that might result in the leakage of credential.

In an advisory revealed Thursday, Rapid7 referred to as consideration to 5 vulnerabilities present in Sigma Spectrum infusion pumps and the Sigma WiFi batteries.

The Sigma Spectrum infusion pumps have been designed in order that, when powered up after a WiFi battery is related, unencrypted knowledge is shipped to the battery through common asynchronous receiver-transmitter (UART).

Due to that, the transmitted knowledge is probably susceptible to compromise by attackers with entry to the infusion pumps, who might both place a communication shim between the models to seize the info, or might use their very own battery to exfiltrate knowledge.

The primary block of transmitted knowledge incorporates the WiFi configuration info, which is then saved on the battery’s non-volatile reminiscence. An attacker capable of connect their very own battery to a pump might then extract from the unit credentials that permits them to entry a company’s WiFi community.

[ READ: Hackers Can Tamper With Doses Delivered by Medical Infusion Pumps ]

Tracked as CVE-2022-26390, the flaw might additionally end in credential leaks if the battery’s non-volatile reminiscence is just not overwritten earlier than the unit is decommissioned, Rapid7 defined.

“When the gadgets are de-acquisitioned and no efforts are made to overwrite the saved knowledge, anybody buying these gadgets on the secondary market might acquire entry to important WiFi credentials of the group that de-acquisitioned the gadgets,” the corporate mentioned.

Rapid7 additionally found a format string vulnerability impacting the ‘hostmessage’ command of a telnet session on the Sigma WiFi battery (CVE-2022-26392). If `settrace state=on` is enabled, an attacker might view the output from the vulnerability by coming into a particular command throughout a telnet session.

One other format string vulnerability on the WiFi battery might be triggered by establishing a WiFi entry level with a SSID containing format string specifiers, after which sending a `get_wifi_location (20)` command to the infusion pump through XML, at particular ports.

Tracked as CVE-2022-26393, the vulnerability is triggered when the system processes the SSID identify of the entry level. An attacker inside radio vary might exploit the problem to probably learn and write arbitrary reminiscence, or, at a minimal, to trigger a denial of service (DoS) situation.

[ READ: Zyxel Patches Critical Security Flaw in NAS Firmware ] 

Rapid7 additionally warned that the Sigma GW IP handle could possibly be modified remotely on all examined WiFi battery models, with out authentication (CVE-2022-26394). The SIGMA GW is used for setting the back-end communication companies for the system.

An attacker might exploit this vulnerability by sending an XML command 15 to TCP or UDP port 51243, permitting them to snoop on all communications initiated by the infusion pump (a man-in-the-middle (MitM) assault).

Organizations are suggested to limit bodily entry to the infusion pumps or Wi-Fi battery models, in addition to to plug batteries right into a unit with invalid or clean credentials to overwrite their non-volatile reminiscence and stop credential leaks.

As well as, organizations ought to prohibit entry to the community segments to which the infusion pumps are related, in addition to monitor community site visitors for unauthorized communication over TCP and UDP port 51243 to infusion pumps.

Baxter manufactures and markets quite a lot of healthcare and pharmaceutical merchandise, together with infusion programs. The corporate’s Sigma Spectrum infusion pumps are TCP/IP-enabled gadgets generally utilized in healthcare amenities to manage medicine and diet to sufferers.

Associated: Infusion Pumps Impacted by Years-Previous Important Vulnerabilities: Report

Associated: Vulnerabilities Enable Hackers to Tamper With Doses Delivered by Medical Infusion Pumps

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