CVE-2021-40367
📋 TL;DR
This vulnerability in syngo fastView allows attackers to execute arbitrary code by exploiting improper validation of DICOM files. All versions of syngo fastView are affected, potentially compromising medical imaging systems. Attackers can achieve remote code execution in the context of the current process.
💻 Affected Systems
- syngo fastView
📦 What is this software?
Syngo Fastview by Siemens Healthineers
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to data theft, ransomware deployment, or disruption of medical imaging services.
Likely Case
Local privilege escalation or remote code execution on vulnerable systems, potentially affecting patient data confidentiality.
If Mitigated
Limited impact if systems are isolated, patched, or have proper input validation controls.
🎯 Exploit Status
Exploitation requires crafting malicious DICOM files. No public exploit code available as of knowledge cutoff.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Contact Siemens Healthineers for specific patched versions
Vendor Advisory: https://www.siemens-healthineers.com/en-us/support-documentation/cybersecurity/shsa-688797
Restart Required: Yes
Instructions:
1. Contact Siemens Healthineers support for patch availability
2. Apply provided patches according to vendor instructions
3. Restart affected systems after patching
4. Verify patch installation
🔧 Temporary Workarounds
Restrict DICOM file sources
allLimit DICOM file processing to trusted sources only
Network segmentation
allIsolate syngo fastView systems from untrusted networks
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable systems
- Deploy application whitelisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check syngo fastView version and compare with vendor advisory. Systems running any version are vulnerable.Check Version:
Check application version through syngo fastView interface or system documentationVerify Fix Applied:
Verify patch installation through Siemens Healthineers support and test with validated DICOM files.📡 Detection & Monitoring
Log Indicators:
- Unusual DICOM file processing errors
- Application crashes or unexpected restarts
- Suspicious process creation from syngo fastView
Network Indicators:
- Unusual DICOM file transfers to vulnerable systems
- Network connections from syngo fastView to unexpected destinations
SIEM Query:
source="syngo_fastView" AND (event_type="crash" OR event_type="error")