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Philips Alice 6 Vulnerabilities (Update B)

Monitor5.3ICS-CERT ICSMA-18-086-01Mar 27, 2018
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

Philips Alice 6 versions R8.0.3 and prior contain insufficient encryption and lack cryptographic integrity checks. These weaknesses allow an attacker to intercept and decrypt usernames, passwords, and personal data transmitted by or stored on the system. An attacker could also replace a trusted system node with a malicious one to alter, corrupt, or disclose sensitive data. The vulnerabilities stem from weak cryptographic implementation (CWE-287: Improper Authentication, CWE-311: Missing Encryption of Sensitive Data).

What this means
What could happen
An attacker could intercept and decrypt stored usernames, passwords, and patient/facility data on the Alice 6 anesthesia delivery system by exploiting weak encryption. An attacker could also impersonate a trusted system component to alter or corrupt critical device data.
Who's at risk
Hospital anesthesia departments and operating rooms using Philips Alice 6 anesthesia delivery and monitoring systems. This affects clinical personnel who rely on Alice 6 for patient monitoring and anesthesia management, as well as any stored patient data and facility credentials.
How it could be exploited
An attacker with network access to the Alice 6 system could intercept unencrypted or weakly encrypted communication to capture credentials and personal data. Alternatively, the attacker could replace a trusted network node (such as a monitoring station or data server) with a malicious node to intercept, alter, or corrupt configuration and patient data before it reaches the actual system.
Prerequisites
  • Network access to Alice 6 system communications
  • No authentication required to perform passive interception
  • Physical or network access to replace a trusted node on the network
Remotely exploitableNo authentication required for passive interceptionLow complexity attackAffects patient data confidentialityWeak encryptionCryptographic integrity checks missing
Exploitability
Low exploit probability (EPSS 0.7%)
Affected products (1)
ProductAffected VersionsFix Status
Version: R8.0.3 or prior≤ R8.0.3No fix yet
Remediation & Mitigation
0/4
Do now
0/2
HARDENINGSegment the Alice 6 system on a restricted network isolated from internet and non-clinical systems until patched
HARDENINGRestrict network access to Alice 6 devices using firewall rules to allow only authorized clinical workstations and monitoring stations
Schedule — requires maintenance window
0/2

Patching may require device reboot — plan for process interruption

HOTFIXUpdate Alice 6 system to firmware version R8.0.4 or later
HOTFIXContact Philips service support to schedule a maintenance window for the R8.0.4 update
View full CISA ICS-CERT advisory
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