CVE-2024-27164
📋 TL;DR
Toshiba printers contain hardcoded credentials (CWE-259) that could allow attackers to gain unauthorized access to device management interfaces. This affects specific Toshiba printer models listed in vendor advisories. Organizations using affected printers are vulnerable to credential-based attacks.
💻 Affected Systems
- Toshiba e-STUDIO multifunction 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
Attackers gain administrative access to printers, enabling configuration changes, data exfiltration, firmware manipulation, or using printers as network footholds for lateral movement.
Likely Case
Unauthorized users access printer management interfaces to change settings, disrupt printing services, or view sensitive information like print job history.
If Mitigated
With network segmentation and access controls, impact is limited to printer functionality disruption without broader network compromise.
🎯 Exploit Status
Exploitation requires only knowledge of hardcoded credentials and 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 firmware updates from Toshiba support portal. 3. Apply firmware updates following vendor instructions. 4. Verify credentials have been changed/removed post-update.
🔧 Temporary Workarounds
Network segmentation
allIsolate printers on separate VLAN with strict access controls
Access control lists
allImplement firewall rules to restrict printer management interface access
🧯 If You Can't Patch
- Change default credentials immediately if possible through management interface
- Disable remote management interfaces and require physical access for configuration
🔍 How to Verify
Check if Vulnerable:
Check printer model against Toshiba advisory list and attempt authentication with known hardcoded credentials (not recommended in production).Check Version:
Check firmware version through printer web interface or physical display panel (varies by model).Verify Fix Applied:
After firmware update, verify authentication fails with previously known hardcoded credentials and new credentials are required.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful login
- Multiple login attempts from unusual IP addresses
- Configuration changes from unauthorized users
Network Indicators:
- Unusual traffic to printer management ports (typically 80, 443, 631)
- Authentication requests using default credential patterns
SIEM Query:
source="printer_logs" AND (event_type="authentication" AND result="success") AND user="[hardcoded_username]"🔗 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
