CVE-2024-5210
📋 TL;DR
An unauthenticated denial-of-service vulnerability in certain Lenovo printers allows attackers on the same network to make printer services unreachable until the device is rebooted. This affects organizations using vulnerable Lenovo printer models on shared networks.
💻 Affected Systems
- Lenovo printers (specific models not detailed in advisory)
⚠️ 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
Critical printing operations are disrupted across an organization until each affected printer is manually rebooted, causing operational downtime.
Likely Case
Intermittent printer unavailability requiring IT intervention to reboot affected devices.
If Mitigated
Minimal impact if printers are isolated on separate VLANs or protected by network segmentation.
🎯 Exploit Status
Exploitation requires network access but no authentication, making it easy for internal threats.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Lenovo support for specific firmware updates
Vendor Advisory: https://iknow.lenovo.com.cn/detail/422688
Restart Required: Yes
Instructions:
1. Visit Lenovo support site. 2. Identify your printer model. 3. Download latest firmware. 4. Apply update via printer web interface or USB. 5. Reboot printer after update.
🔧 Temporary Workarounds
Network Segmentation
allIsolate printers on separate VLAN to limit attack surface
Access Control Lists
allImplement network ACLs to restrict printer access to authorized IPs only
🧯 If You Can't Patch
- Segment printers onto dedicated network VLANs with strict access controls
- Implement physical network isolation for critical printing infrastructure
🔍 How to Verify
Check if Vulnerable:
Check printer firmware version against Lenovo's advisory; if on affected version and on shared network, assume vulnerable.Check Version:
Access printer web interface at http://[printer-ip] and navigate to Settings/About to check firmware versionVerify Fix Applied:
Confirm firmware version is updated to patched version via printer web interface or display panel.📡 Detection & Monitoring
Log Indicators:
- Multiple connection attempts to printer services from single source
- Printer service restart logs
- Unexpected printer reboot events
Network Indicators:
- Unusual traffic patterns to printer ports (typically 9100, 515, 631)
- Multiple TCP RST packets to printer
SIEM Query:
source_ip=[printer_ip] AND (event_type=service_stop OR event_type=reboot) AND timeframe=last_5min