CVE-2024-36249
📋 TL;DR
This cross-site scripting (XSS) vulnerability in Sharp and Toshiba multifunction printers allows attackers to execute arbitrary scripts on the administrative web interface. If exploited, attackers could steal administrator credentials, modify printer settings, or use the printer as a foothold for further network attacks. Organizations using affected Sharp and Toshiba MFP models are at risk.
💻 Affected Systems
- Sharp Corporation MFPs
- Toshiba Tech Corporation MFPs
⚠️ 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
Attackers gain administrative access to the printer, steal credentials, pivot to internal network resources, and potentially compromise the entire network infrastructure.
Likely Case
Attackers steal administrator credentials, modify printer settings, install malicious firmware, or use the printer as a proxy for internal attacks.
If Mitigated
Limited to printer administrative interface compromise with no network access due to proper segmentation and access controls.
🎯 Exploit Status
XSS vulnerabilities typically require some user interaction (admin visiting malicious page) but are relatively easy to exploit once discovered.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware updates specified in vendor advisories
Vendor Advisory: https://global.sharp/products/copier/info/info_security_2024-05.html
Restart Required: Yes
Instructions:
1. Identify affected MFP models from vendor advisories. 2. Download firmware updates from vendor support sites. 3. Apply firmware updates following vendor instructions. 4. Verify update completion and restart printers.
🔧 Temporary Workarounds
Network Segmentation
allIsolate printers on separate VLAN with restricted access to administrative interfaces
Access Control
allRestrict administrative interface access to specific IP addresses or networks
🧯 If You Can't Patch
- Segment printers on isolated network with no internet access
- Implement strict access controls allowing only authorized administrators to access printer web interfaces
🔍 How to Verify
Check if Vulnerable:
Check printer model and firmware version against vendor advisory lists. Access printer web interface and review firmware version in settings.Check Version:
Access printer web interface > Settings/Configuration > System Information > Firmware VersionVerify Fix Applied:
After applying firmware update, verify firmware version matches patched version in vendor advisory. Test administrative interface for XSS payloads.📡 Detection & Monitoring
Log Indicators:
- Unusual administrative login attempts
- Frequent access to administrative pages
- Script tags or JavaScript in URL parameters
Network Indicators:
- HTTP requests with script payloads to printer administrative endpoints
- Unusual outbound connections from printers
SIEM Query:
source="printer_logs" AND (url="*<script>*" OR url="*javascript:*" OR user_agent="*malicious*" OR status=403)