CVE-2024-27158
📋 TL;DR
All Toshiba printers share the same hardcoded root password, allowing attackers with network access to gain administrative control. This affects all Toshiba printer models listed in the vendor advisory. Organizations using these printers are vulnerable to complete device compromise.
💻 Affected Systems
- All Toshiba printers (specific models listed in vendor 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
Complete printer takeover leading to data exfiltration, ransomware deployment, lateral movement into corporate networks, and persistent backdoor installation.
Likely Case
Unauthorized configuration changes, print job interception, denial of service, and credential harvesting from printed documents.
If Mitigated
Limited impact if printers are isolated on separate VLANs with strict network access controls and monitored for suspicious activity.
🎯 Exploit Status
Exploitation requires only network access to the printer and knowledge of the hardcoded password. No authentication or special privileges needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware updates specified in Toshiba advisory
Vendor Advisory: https://www.toshibatec.com/information/20240531_01.html
Restart Required: Yes
Instructions:
1. Identify affected printer models from Toshiba advisory. 2. Download appropriate firmware updates from Toshiba support portal. 3. Apply firmware updates following vendor instructions. 4. Verify successful update and password change.
🔧 Temporary Workarounds
Network segmentation
allIsolate printers on separate VLAN with strict firewall rules limiting access to authorized IPs only
Access control lists
allImplement network ACLs to restrict printer management interface access to specific administrative subnets
🧯 If You Can't Patch
- Segment printers on isolated network with no internet access
- Implement strict firewall rules allowing only necessary ports from authorized management stations
🔍 How to Verify
Check if Vulnerable:
Attempt SSH or web interface login using the hardcoded root password (not disclosed here for security reasons)Check Version:
Check printer web interface or use SNMP query for firmware versionVerify Fix Applied:
Verify firmware version matches patched version from Toshiba advisory and test that hardcoded password no longer works📡 Detection & Monitoring
Log Indicators:
- Failed login attempts followed by successful root login
- Unusual configuration changes
- Multiple SSH connections from unexpected sources
Network Indicators:
- SSH traffic to printers from non-admin IPs
- Unusual port scanning activity targeting printers
- Unexpected outbound connections from printers
SIEM Query:
source_ip=* AND destination_ip=printer_ip AND (protocol=ssh OR protocol=http) AND (event_type=authentication_success OR event_type=configuration_change)🔗 References
- http://seclists.org/fulldisclosure/2024/Jul/1
- https://jvn.jp/en/vu/JVNVU97136265/index.html
- https://www.toshibatec.com/information/20240531_01.html
- https://www.toshibatec.com/information/pdf/information20240531_01.pdf
- http://seclists.org/fulldisclosure/2024/Jul/1
- https://jvn.jp/en/vu/JVNVU97136265/index.html
- https://www.toshibatec.com/information/20240531_01.html
- https://www.toshibatec.com/information/pdf/information20240531_01.pdf
