CVE-2024-7011
📋 TL;DR
This vulnerability affects Sharp NEC projectors, allowing attackers to cause a denial-of-service condition via the SNMP service. The attack disrupts projector functionality, potentially rendering devices unusable until manually restarted. Organizations using the listed projector models in corporate, educational, or public settings are affected.
💻 Affected Systems
- Sharp NEC Projectors (all models listed in CVE description)
⚠️ 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
Projector becomes completely unresponsive, requiring physical power cycle or service intervention to restore functionality, disrupting presentations, meetings, or events.
Likely Case
Temporary service disruption where projector stops responding to controls and displays, requiring manual restart but no permanent damage.
If Mitigated
Minimal impact if SNMP service is disabled or network access is restricted; projector continues normal operation for display functions.
🎯 Exploit Status
SNMP is typically unauthenticated by default in many configurations, making exploitation straightforward if network access is available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific firmware updates
Vendor Advisory: https://sharp-displays.jp.sharp/global/support/info/Projector_vulnerability_202408.html
Restart Required: Yes
Instructions:
1. Visit vendor advisory URL. 2. Identify your projector model. 3. Download latest firmware from Sharp NEC support site. 4. Install firmware update via USB or network following vendor instructions. 5. Restart projector.
🔧 Temporary Workarounds
Disable SNMP Service
allTurn off SNMP service on affected projectors to prevent exploitation
Network Segmentation
allIsolate projectors on separate VLAN or restrict SNMP port access
🧯 If You Can't Patch
- Disable SNMP service on all affected projectors immediately
- Implement network access controls to restrict SNMP traffic to trusted management systems only
🔍 How to Verify
Check if Vulnerable:
Check projector firmware version via web interface or serial console and compare with vendor advisory. Also verify if SNMP service is enabled.Check Version:
Check via projector menu: Menu > Information > Version or via web interface if enabledVerify Fix Applied:
After updating firmware, confirm version matches patched release from vendor advisory and test SNMP service functionality if required.📡 Detection & Monitoring
Log Indicators:
- SNMP service crash logs
- Projector reboot events without user action
- Multiple SNMP requests from single source
Network Indicators:
- Unusual SNMP traffic to projector IPs
- SNMP packets with malformed data
- High volume of SNMP requests
SIEM Query:
source_ip="*" AND dest_port=161 AND protocol="UDP" AND (packet_size>normal OR request_rate>threshold)