High-Severity Authentication Bug Identified in Hillrom Welch Allyn Cardio Products

A high severity vulnerability has been identified in certain Hillrom Welch Allyn Cardio products that allows accounts to be accessed without a password.

The vulnerability is an authentication bypass issue that exists when the Hillrom cardiology products have been configured to use single sign-on (SSO). The vulnerability allows the manual entry of all active directory (AD) accounts provisioned within the application, and access will be granted without having to provide the associated password. That means a remote attacker could access the application under the provided AD account and gain all privileges associated with the account.

The vulnerability is tracked as CVE-2021-43935 and has been assigned a CVSS v3 base score of 8.1 out of 10.

According to Hillrom, the vulnerability affects the following Hillrom Welch Allyn cardiology products:

  • Welch Allyn Q-Stress Cardiac Stress Testing System: Versions 6.0.0 through 6.3.1
  • Welch Allyn X-Scribe Cardiac Stress Testing System: Versions 5.01 through 6.3.1
  • Welch Allyn Diagnostic Cardiology Suite: Version 2.1.0
  • Welch Allyn Vision Express: Versions 6.1.0 through 6.4.0
  • Welch Allyn H-Scribe Holter Analysis System: Versions 5.01 through 6.4.0
  • Welch Allyn R-Scribe Resting ECG System: Versions 5.01 through 7.0.0
  • Welch Allyn Connex Cardio: Versions 1.0.0 through 1.1.1

Hillrom will address this vulnerability in the next software release; however, as an interim measure to prevent the vulnerability from being exploited, users of the affected products should disable the SSO feature in the respective Modality Manager Configuration settings. In addition, customers should ensure they apply proper network and physical security controls and should apply authentication for server access.

Author: Steve Alder has many years of experience as a journalist, and comes from a background in market research. He is a specialist on legal and regulatory affairs, and has several years of experience writing about HIPAA. Steve holds a B.Sc. from the University of Liverpool.