CVE-2024-27157
📋 TL;DR
This vulnerability allows attackers to retrieve authentication sessions from clear-text logs, potentially enabling credential theft and authentication bypass. It affects specific Toshiba Tec products where session data is logged insecurely. Organizations using these vulnerable products are at risk of unauthorized access.
💻 Affected Systems
- Toshiba Tec e-STUDIO multifunction 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 system compromise via stolen admin credentials leading to data theft, system manipulation, or ransomware deployment.
Likely Case
Unauthorized access to sensitive functions or data by attackers using stolen session credentials.
If Mitigated
Limited impact with proper log access controls, though session exposure remains a concern.
🎯 Exploit Status
Exploitation requires access to log files; no complex techniques needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific firmware versions
Vendor Advisory: https://www.toshibatec.com/information/20240531_01.html
Restart Required: Yes
Instructions:
1. Download firmware update from Toshiba Tec support site. 2. Apply update per vendor instructions. 3. Restart device. 4. Verify logs no longer contain session data.
🔧 Temporary Workarounds
Disable detailed logging
allReduce logging verbosity to exclude session data from logs
Access device admin panel → System Settings → Logging → Set to minimal/error-only
Restrict log access
linuxApply strict file permissions to log directories
chmod 600 /var/log/[device_logs]
🧯 If You Can't Patch
- Isolate vulnerable devices on separate network segments with strict access controls
- Implement continuous monitoring of log access and authentication anomalies
🔍 How to Verify
Check if Vulnerable:
Check device logs for plain-text session tokens or credentials; review firmware version against advisory.Check Version:
Check device admin panel → System Information → Firmware VersionVerify Fix Applied:
Confirm logs no longer contain session data after patch; verify firmware version matches patched release.📡 Detection & Monitoring
Log Indicators:
- Unusual access to log files
- Log entries containing session tokens or credentials
Network Indicators:
- Unexpected authentication from unusual IPs
- Multiple failed logins followed by success
SIEM Query:
source="device_logs" AND ("session" OR "token" OR "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
