CVE-2024-27170
📋 TL;DR
Toshiba printers store WebDAV access credentials in readable files, allowing attackers to gain full WebDAV access to affected printers. This affects all Toshiba printer models with vulnerable firmware versions. Attackers can exploit this to access printer functions and potentially sensitive data.
💻 Affected Systems
- All Toshiba printer models
⚠️ 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
Full compromise of printer functionality, unauthorized access to printed documents, network pivoting to internal systems, and credential harvesting from printer memory.
Likely Case
Unauthorized access to printer WebDAV interface, potential document interception, and printer configuration manipulation.
If Mitigated
Limited impact if printers are isolated from internet and internal networks, with strict access controls and monitoring.
🎯 Exploit Status
Exploitation requires reading credential files via file access vulnerabilities or exposed interfaces.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Varies by model - check vendor advisory
Vendor Advisory: https://www.toshibatec.com/information/20240531_01.html
Restart Required: Yes
Instructions:
1. Check vendor advisory for specific model firmware updates. 2. Download updated firmware from Toshiba support portal. 3. Apply firmware update via printer web interface or management console. 4. Verify update completion and restart printer.
🔧 Temporary Workarounds
Disable WebDAV access
allDisable WebDAV functionality on affected printers
Access printer web interface > Network Settings > Disable WebDAV
Network segmentation
allIsolate printers to separate VLAN with restricted access
🧯 If You Can't Patch
- Segment printers to isolated network zones with strict firewall rules
- Implement network monitoring for WebDAV access attempts and credential extraction patterns
🔍 How to Verify
Check if Vulnerable:
Check if printer firmware version is listed in Toshiba advisory as vulnerable. Attempt to access WebDAV credentials via known file paths.Check Version:
Access printer web interface > System Information > Firmware VersionVerify Fix Applied:
Verify firmware version matches patched version in vendor advisory. Test that WebDAV credentials are no longer stored in readable files.📡 Detection & Monitoring
Log Indicators:
- Unusual WebDAV access patterns
- Multiple failed authentication attempts to printer interfaces
- File access attempts to credential storage paths
Network Indicators:
- WebDAV protocol traffic to printers from unauthorized sources
- Credential extraction attempts via HTTP/HTTPS
SIEM Query:
source="printer_logs" AND (event="webdav_access" OR event="file_access" AND path="*credential*")🔗 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
