CVE-2024-47801
📋 TL;DR
Sharp and Toshiba Tec multifunction printers (MFPs) have a reflected cross-site scripting vulnerability where specially crafted URLs can execute malicious scripts in users' browsers. This affects organizations using vulnerable Sharp and Toshiba Tec MFP models with web interfaces accessible to users.
💻 Affected Systems
- Sharp MFPs
- Toshiba Tec MFPs
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, redirect users to phishing sites, or perform actions on behalf of authenticated users, potentially leading to data theft or unauthorized device access.
Likely Case
Attackers craft malicious links that, when clicked by users, execute scripts in their browsers to steal session cookies or redirect to phishing pages.
If Mitigated
With proper network segmentation and user awareness training, impact is limited to isolated incidents affecting individual users rather than system-wide compromise.
🎯 Exploit Status
Reflected XSS requires user interaction (clicking malicious link) but requires no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware updates specified in vendor advisories
Vendor Advisory: https://global.sharp/products/copier/info/info_security_2024-10.html
Restart Required: Yes
Instructions:
1. Check vendor advisories for affected models. 2. Download firmware updates from vendor support sites. 3. Apply firmware updates following vendor instructions. 4. Verify update completion.
🔧 Temporary Workarounds
Network Segmentation
allRestrict access to MFP web interfaces to trusted networks only
Web Application Firewall
allDeploy WAF with XSS protection rules to block malicious requests
🧯 If You Can't Patch
- Isolate MFPs on separate VLAN with restricted access
- Implement strict Content Security Policy headers if supported
🔍 How to Verify
Check if Vulnerable:
Check MFP model and firmware version against vendor advisories. Test with safe XSS payloads in query parameters.Check Version:
Check via MFP web interface: Settings > System > Firmware VersionVerify Fix Applied:
Verify firmware version matches patched version in vendor advisory. Retest with XSS payloads.📡 Detection & Monitoring
Log Indicators:
- Unusual query parameters in HTTP logs
- Multiple failed XSS attempts
Network Indicators:
- HTTP requests with suspicious script tags in query parameters
- Unusual traffic to MFP web interfaces
SIEM Query:
source="mfp_web_logs" AND (url="*<script>*" OR url="*javascript:*")