CVE-2023-5403
📋 TL;DR
This vulnerability allows attackers to manipulate server hostname-to-IP address translation, potentially enabling remote code execution or service disruption. It affects Honeywell systems with vulnerable software versions. Organizations using affected Honeywell products should prioritize patching.
💻 Affected Systems
- Honeywell process control systems
⚠️ 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
Remote code execution with full system compromise, allowing attackers to execute arbitrary commands, steal data, or disrupt critical operations.
Likely Case
Service disruption or denial of service through manipulation of hostname resolution, potentially causing system failures in industrial control environments.
If Mitigated
Limited impact with proper network segmentation and access controls, potentially only causing localized service interruptions.
🎯 Exploit Status
Exploitation requires network access and understanding of the target system's hostname resolution mechanisms.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Honeywell Security Notification for specific patched versions
Vendor Advisory: https://process.honeywell.com
Restart Required: Yes
Instructions:
1. Review Honeywell Security Notification 2. Identify affected systems 3. Apply vendor-provided patches 4. Restart affected systems 5. Verify patch installation
🔧 Temporary Workarounds
Network segmentation
allIsolate affected systems from untrusted networks to limit attack surface
DNS/hostname validation
allImplement strict validation of hostname-to-IP resolution
🧯 If You Can't Patch
- Implement strict network access controls and segmentation
- Monitor for unusual hostname resolution patterns and system behavior
🔍 How to Verify
Check if Vulnerable:
Check system version against Honeywell Security Notification; review system logs for unusual hostname resolution patternsCheck Version:
System-specific; consult Honeywell documentation for version checking commandsVerify Fix Applied:
Verify patch installation through version check and test hostname resolution functionality📡 Detection & Monitoring
Log Indicators:
- Unusual hostname resolution failures
- Unexpected network connections from system processes
- System service crashes related to network communication
Network Indicators:
- Abnormal DNS queries from industrial control systems
- Unexpected traffic patterns to/from affected systems
SIEM Query:
source="honeywell_system" AND (event_type="dns_failure" OR event_type="service_crash")