CVE-2021-33022

7.5 HIGH

📋 TL;DR

This vulnerability allows unauthorized actors to intercept sensitive medical data transmitted in cleartext by Philips Vue PACS systems. Attackers can sniff network traffic to capture patient information, medical images, and authentication credentials. Healthcare organizations using affected Philips PACS versions are impacted.

💻 Affected Systems

Products:
  • Philips Vue PACS
Versions: 12.2.x.x and prior
Operating Systems: Windows
Default Config Vulnerable: ⚠️ Yes
Notes: Affects systems where sensitive data transmission occurs without encryption.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of patient medical records, including sensitive health information and medical images, leading to privacy violations, medical identity theft, and regulatory penalties.

🟠

Likely Case

Unauthorized access to patient data and authentication credentials, potentially enabling further system compromise and data exfiltration.

🟢

If Mitigated

Limited data exposure if network segmentation and encryption controls prevent sniffing, though risk remains if controls are bypassed.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Exploitation requires network access to sniff traffic; no authentication needed to intercept data.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Contact Philips for specific patched versions

Vendor Advisory: http://www.philips.com/productsecurity

Restart Required: Yes

Instructions:

1. Contact Philips support for patched versions. 2. Apply vendor-provided patches. 3. Restart affected systems. 4. Verify encryption is enabled for all sensitive communications.

🔧 Temporary Workarounds

Enable Network Encryption

all

Configure TLS/SSL encryption for all network communications involving sensitive data.

Network Segmentation

all

Isolate PACS systems on separate VLANs with strict access controls.

🧯 If You Can't Patch

  • Implement network-level encryption (VPNs, IPSec) for all PACS communications.
  • Deploy network monitoring and intrusion detection to alert on cleartext traffic.

🔍 How to Verify

Check if Vulnerable:

Use network sniffing tools (Wireshark) to capture traffic from PACS systems and check for cleartext sensitive data.

Check Version:

Check system documentation or contact Philips support for version information.

Verify Fix Applied:

Verify all network communications show encrypted protocols (TLS/SSL) and no cleartext sensitive data.

📡 Detection & Monitoring

Log Indicators:

  • Unusual network traffic patterns
  • Failed encryption handshake attempts

Network Indicators:

  • Cleartext HTTP traffic containing medical data
  • Unencrypted DICOM transmissions

SIEM Query:

source_ip="PACS_IP" AND protocol="HTTP" AND (contains("patient") OR contains("medical"))

🔗 References

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