CVE-2024-27155
📋 TL;DR
This CVE describes a local privilege escalation vulnerability in Toshiba printers that allows attackers to replace legitimate programs with malicious ones. Any Toshiba printer with affected firmware is vulnerable, potentially enabling complete device compromise. Both local and remote attackers can exploit this vulnerability.
💻 Affected Systems
- Toshiba printers (specific models listed in vendor advisories)
⚠️ 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 compromise allowing attackers to install persistent malware, intercept print jobs, pivot to internal networks, or use the printer as a foothold for further attacks.
Likely Case
Attackers gain administrative control of printers to modify configurations, steal sensitive printed documents, or disrupt printing services.
If Mitigated
With proper network segmentation and access controls, impact is limited to printer functionality disruption rather than network-wide compromise.
🎯 Exploit Status
Exploit details are publicly disclosed in security advisories, making weaponization likely. Attack requires network access to printer management interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Updated firmware versions specified in Toshiba advisory
Vendor Advisory: https://www.toshibatec.com/information/20240531_01.html
Restart Required: Yes
Instructions:
1. Identify your printer model and current firmware version. 2. Visit Toshiba's security advisory page. 3. Download appropriate firmware update for your model. 4. Apply firmware update following manufacturer instructions. 5. Reboot printer after update completion.
🔧 Temporary Workarounds
Network Segmentation
allIsolate printers on separate VLANs with strict firewall rules limiting access to management interfaces.
Access Control
allImplement strong authentication for printer management interfaces and disable unnecessary services.
🧯 If You Can't Patch
- Segment printers on isolated network segments with strict inbound/outbound firewall rules
- Disable remote management features and limit printer access to trusted IP addresses only
🔍 How to Verify
Check if Vulnerable:
Check printer firmware version against affected versions listed in Toshiba advisory. Access printer web interface and navigate to system information page.Check Version:
Access printer web interface at http://[printer-ip]/ or use SNMP query: snmpget -v2c -c public [printer-ip] 1.3.6.1.2.1.25.6.3.1.2Verify Fix Applied:
After applying firmware update, verify the firmware version matches or exceeds the patched version specified in Toshiba's advisory.📡 Detection & Monitoring
Log Indicators:
- Unusual firmware modification attempts
- Unauthorized access to printer management interfaces
- Multiple failed authentication attempts to printer admin interface
Network Indicators:
- Unexpected connections to printer management ports (typically 80, 443, 9100)
- Unusual outbound connections from printers
SIEM Query:
source="printer_logs" AND (event="firmware_update" OR event="config_change") AND user!="authorized_admin"🔗 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
