CVE-2024-34162
📋 TL;DR
This vulnerability affects Sharp and Toshiba multifunction printers when configured with LDAP authentication in SIMPLE mode. It allows attackers to intercept LDAP credentials transmitted in cleartext during authentication. Organizations using these devices with LDAP authentication are affected.
💻 Affected Systems
- Sharp multifunction printers
- Toshiba 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
Attackers capture LDAP domain credentials, potentially gaining access to corporate networks and sensitive systems.
Likely Case
Attackers on the same network segment capture LDAP credentials, compromising user accounts and potentially accessing other systems.
If Mitigated
With network segmentation and monitoring, credential capture is detected before significant damage occurs.
🎯 Exploit Status
Exploitation requires network access to intercept LDAP traffic; tools like Wireshark can capture credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor-specific firmware updates
Vendor Advisory: https://global.sharp/products/copier/info/info_security_2024-05.html
Restart Required: Yes
Instructions:
1. Check vendor advisory for affected models. 2. Download latest firmware from vendor portal. 3. Apply firmware update following vendor instructions. 4. Verify LDAP uses secure authentication methods.
🔧 Temporary Workarounds
Configure LDAP with secure authentication
allChange LDAP authentication from SIMPLE to secure methods like SASL or TLS
Network segmentation
allIsolate printer network traffic from sensitive systems
🧯 If You Can't Patch
- Change LDAP authentication method from SIMPLE to secure alternatives
- Implement network monitoring for cleartext LDAP traffic on printer VLANs
🔍 How to Verify
Check if Vulnerable:
Check printer web interface LDAP configuration for SIMPLE authentication modeCheck Version:
Check firmware version in printer web interface or vendor-specific management toolsVerify Fix Applied:
Verify LDAP configuration uses secure authentication and monitor network for cleartext LDAP traffic📡 Detection & Monitoring
Log Indicators:
- Failed LDAP authentication attempts
- LDAP configuration changes
Network Indicators:
- Cleartext LDAP traffic (port 389) from printer IPs
- LDAP bind requests with SIMPLE authentication
SIEM Query:
source_ip=printer_ip AND destination_port=389 AND protocol=ldap🔗 References
- https://global.sharp/products/copier/info/info_security_2024-05.html
- https://jp.sharp/business/print/information/info_security_2024-05.html
- https://jvn.jp/en/vu/JVNVU93051062/
- https://pierrekim.github.io/blog/2024-06-27-sharp-mfp-17-vulnerabilities.html
- https://www.toshibatec.co.jp/information/20240531_02.html
- https://www.toshibatec.com/information/20240531_02.html
- http://seclists.org/fulldisclosure/2024/Jul/0
