CVE-2024-27147
📋 TL;DR
CVE-2024-27147 is a local privilege escalation vulnerability in Toshiba printers that allows attackers to gain elevated privileges on affected devices. This affects various Toshiba printer models, potentially enabling remote compromise of the printer system. Organizations using vulnerable Toshiba printer models are at risk.
💻 Affected Systems
- Toshiba e-STUDIO and e-BRIDGE series printers
⚠️ 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 compromise of printer system allowing attacker to install persistent malware, intercept print jobs, access network resources, or use printer as pivot point into corporate network.
Likely Case
Attacker gains administrative control of printer, can modify configurations, access stored documents, and potentially use printer as foothold for further attacks.
If Mitigated
Limited impact if printers are isolated on separate network segments with strict access controls and regular monitoring.
🎯 Exploit Status
Exploit details published in Full Disclosure mailing list. Attack requires network access to printer management interface.
🛠️ 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 latest firmware from Toshiba support portal. 3. Apply firmware update following manufacturer instructions. 4. Verify update completion and restart printer.
🔧 Temporary Workarounds
Network segmentation
allIsolate printers on separate VLAN with strict firewall rules limiting access to management interfaces
Access control restrictions
allImplement IP whitelisting for printer management interfaces and disable unnecessary services
🧯 If You Can't Patch
- Segment printers on isolated network with no internet access
- Implement strict firewall rules allowing only necessary print traffic from authorized IPs
🔍 How to Verify
Check if Vulnerable:
Check printer model and firmware version against Toshiba advisory list. If model matches affected list and firmware is not updated, device is vulnerable.Check Version:
Check printer web interface or control panel for firmware version informationVerify Fix Applied:
Verify firmware version has been updated to version specified in Toshiba advisory. Confirm no unauthorized access or privilege escalation attempts in logs.📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts to printer management interface
- Privilege escalation attempts in system logs
- Unexpected firmware or configuration changes
Network Indicators:
- Unusual network traffic to printer management ports (typically 80, 443, 9100)
- Multiple failed authentication attempts followed by successful privileged access
SIEM Query:
source="printer_logs" AND (event_type="privilege_escalation" OR auth_failure>3 AND auth_success=1)🔗 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
