CVE-2021-27456 Explained : Impact and Mitigation

This article provides insights into CVE-2021-27456, a vulnerability affecting Philips Gemini PET/CT family software that stores sensitive information without access control.

Understanding CVE-2021-27456

CVE-2021-27456 highlights a security flaw in Philips Gemini PET/CT family software, leading to the storage of sensitive data on removable media without built-in access control.

What is CVE-2021-27456?

The vulnerability allows unauthorized access to sensitive information stored on removable media within the affected Philips imaging systems.

The Impact of CVE-2021-27456

With a CVSS base score of 2.4 (Low), this vulnerability poses a risk of unauthorized disclosure of patient health-related data, potentially compromising data confidentiality.

Technical Details of CVE-2021-27456

The vulnerability is classified under CWE-921 - Storage of Sensitive Data Without Access Control. It has a low attack complexity and vector, impacting data confidentiality with no direct privileges required for exploitation.

Vulnerability Description

Philips Gemini PET/CT family software lacks access control, enabling the storage of sensitive information on unsecured removable media devices.

Affected Systems and Versions

Several Philips Gemini PET/CT system models, including Gemini 16 Slice, Gemini Dual, and others, are affected by this vulnerability in version 882300 and others.

Exploitation Mechanism

The vulnerability's physical attack vector allows threat actors to access and retrieve sensitive data stored in the removable media without authentication.

Mitigation and Prevention

To address CVE-2021-27456, Philips recommends implementing the following security measures:

Immediate Steps to Take

Operate Philips Gemini PET/CT systems within authorized specifications
Implement a multi-layered security strategy
Restrict physical access to authorized personnel

Long-Term Security Practices

Regularly update and patch the systems
Implement data encryption and access controls
Conduct regular security audits and assessments

Patching and Updates

Users can contact Philips service support teams for guidance on securing Gemini PET/CT systems and access the advisory on the Philips product security website.